Authors: Mara Therese P. Evangelista MD, DPDS and Nick Huber

Abstract

Because the objective of a clinical trial is to provide reliable evidence of the efficacy and safety of a treatment, a major issue in the design of clinical trials is ensuring we have a sufficient number of patients to provide the required level of evidence. Essentially, we need to have enough subjects in our trial to give a good chance of detecting a clinically important treatment difference if such a difference exists, while being able to reasonably conclude that no such difference exists if our results do not show it. The focus of this article is the sample size calculation for superiority trials. There are different methods in determining the sample size in trials with a non-inferiority design, or those that are randomized by cluster rather than individually. In order to appreciate the basics of sample size requirements for a trial, some understanding of key statistical concepts is essential.

 

Citation

Evangelista, MT & Huber, N. (2017). Sample size calculation 101: unraveling the concepts behind the numbers. Journal of the Philippine Dermatological Society, 26(2), 18-21.

 

Keywords

clinical trial, sample size, calculation

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• The CPD Law: A Commitment to Life Long Learning for Medical Professionals Abstract
• A randomized, double-blind, controlled trial on the safety and efficacy of bee propolis 5% ointment versus clobetasol propionate 0.05% ointment for lichen simplex chronicus Abstract
• Dermatomyositis in a 28-year-old Filipino male with Nasopharyngeal carcinoma: A case report Abstract
• Tuberculosis Verrucosa Cutis presenting as diffuse plantar keratoderma in a Filipino female Abstract
• A novel mutation in the EDA gene in a Filipino family with X-linked hypohidrotic ectodermal dysplasia Abstract
• Patient preference on psoriasis treatment in a Philippine tertiary hospital: A conjoint analysis Abstract
• Allergic contact dermatitis to propolis presenting as tinea pedis Abstract
• Squamous cell carcinoma secondary to arsenic keratoses in a father and son Abstract
• Factors related to treatment-seeking behavior among acne patients seen in a tertiary hospital in the Philippines: A cross-sectional study Abstract
• Bubbly lupus: A case of a Filipino woman with bullous systemic lupus erythematosus successfully treated with prednisone and hydroxychloroquine Abstract
• Combination therapy versus monotherapy for moderate to severe chronic plaque psoriasis in adults Abstract
• Mutilating pyoderma gangrenosum in an infant: A case report Abstract
• Pachydermoperiostosis mimicking acromegaly in an adult Filipino male: Case report Abstract
• Non-inferiority trials: Why, what and how? Abstract
• Juvenile hyaline fibromatosis and infantile systemic hyalinosis: The first two reported cases in the Philippines Abstract
• Telangiectasia Macularis Eruptiva Perstans in an Indian man: Correlation between clinical, dermoscopic, histopathological, and immunohistochemical findings Abstract
• Keratoacanthoma centrifugum marginatum in brown skin: A diagnostic conundrum Abstract
• A case report on Chironex sp (box jellyfish) envenomation and literature review on the appropriate management Abstract
• Multiple familial trichoepitheliomas: A disfiguring malady successfully treated with carbon dioxide laser Abstract
• Disseminated superficial porokeratosis in an adult Filipino female treated with oral isotretinoin Abstract

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• Congratulations to the Philippines Dermatological Society on the launch of the online version of its journal.
• It is a great pleasure to send a congratulatory message to the Journal of the Philippine Dermatological Society.
• Congratulations to the Philippine Dermatological Society and to the editorial board and staff for the launching of JPDS online!
• The woods are lovely, dark and deep, But I have promises to keep, And miles to go before I sleep, And miles to go before I sleep.
• Congratulations to Editor Johannes Dayrit and his team for making the dream come true!
• Congratulations on this achievement!
• Thumbs up to the digitalization of the Journal of the Philippine Dermatological Society!
• Congratulations to the JPDS
• Treatment response as a diagnostic feature in zinc deficiency-associated dermatitis in a three-month-old Filipino male: A case report
• Childhood bullous pemphigoid: A case report
• An unusual presentation of painless penile erosions of pemphigus vulgaris: A case report
• An atypical case of a 14-year-old Filipino female with non-classical congenital adrenal hyperplasia presenting with alopecia universalis
• Knowledge, attitude, perception and practices of primary care physicians regarding common dermatological diseases: A cross-sectional study
• Skin cancer in a public tertiary hospital in Manila, Philippines from 2015 to 2019: A retrospective study
• A cross-sectional study of the prevalence and factors associated with self-medication among patients at the out-patient clinic of the department of dermatology in Rizal Medical Center
• Sociodemographic and Clinical Profile of Geriatric Patients seen at the Southern Philippines Medical Center Department of Dermatology from January 2016 to December 2019
• Efficacy and safety of turmeric 1% emollient cream in the control of chronic kidney disease-associated pruritus in hemodialysis patients: A randomized double-blind clinical trial
• A case of anti-BP230 antibody-positive dyshidrosiform bullous pemphigoid secondary to dipeptidyl peptidase-4 inhibitor in a 65-year-old Filipino female
• Scrofuloderma and tuberculous gumma in a young Filipino adult: a rare presentation of multifocal tuberculosis
• Subungual squamous cell carcinoma of the great toe presenting as a pyogenic granuloma-like mass in a 64-year-old Filipino male: a case report
• Topical sirolimus for the treatment of angiofi bromas in a child with tuberous sclerosis complex: fi rst reported case in the Philippines
• Primary cutaneous aggressive epidermotropic CD8+ T-cell lymphoma in a 76-year-old Filipino Male: a case report
• Malignant transformation of multiple adnexal tumors in a Filipino-American patient with Brooke-Spiegler Syndrome: a case report
• The economic burden of psoriasis: a cross-sectional study in a tertiary hospital in the Philippines
• Relationship of whole blood zinc levels to acne severity among Filipinos 18-25 years old: a cross-sectional comparative study in a tertiary government hospital
• Comparative efficacy and safety of oral ivermectin, topical permethrin, and its combination in the treatment of scabies: a systematic literature review
• Teledermatology at a tertiary government hospital in Davao City during the COVID-19 pandemic: a retrospective descriptive study
• Severe papulopustular rosacea with demodicosis in a 47-year-old Filipino female: A case report
• Acral lentiginous melanoma and tuberculosis verrucosa cutis in a 78-year-old Filipino: A case report
• AIDS-associated Kaposi sarcoma: A case series in the Philippine setting
• Large basal cell carcinoma in a 101-year-old Filipino female: A case report
• HIV and leprosy in a 27-year-old Filipino male: A case report
• Translation and validation of a scale on the health care providers’ Attitudes Towards Persons Living With Leprosy (AT-PLWL)
• A translation and validation study of the Filipino version of the Psoriasis Epidemiology Screening Tool (PEST) among Filipino patients with psoriasis seen at the Rizal Medical Center
• Determination of minimal erythema dose of Filipino adults to standardize the initial dose of narrowband ultraviolet B phototherapy in a tertiary hospital
• Prevalence of mucosal and cutaneous disorders among HIV/AIDS adult Filipino patients 18-60 years old seen in a tertiary hospital in Makati City
• Prevalence of Vitamin D insufficiency and deficiency among seborrheic dermatitis patients: a cross- sectional study at Makati Medical Center
• Whole-exome sequencing in the clinical setting: Establishing a foothold for precision medicine in genodermatoses and other diseases
• A randomized, comparative study on the efficacy and safety of mangosteen 1% extract gel versus benzoyl peroxide 5% gel in the treatment of mild to moderate acne vulgaris
• The role of skin punch grafting with plasma-rich plasma injection on stable segmental vitiligo
• Herpes zoster after COVID-19 vaccination: A case series
• Functional and integrative approach to dermatology: Useful tips for your practice
• COVID-19 vaccination and dermatologic patients on immunotherapy and biologic therapies
• COVID-19 vaccination and patients with a history of facial soft tissue fillers and botulinum toxin injection
• A randomized controlled study on the efficacy and safety of zinc oxide 20% ointment versus salicylic acid 15% + lactic acid 15% ointment in the treatment of patients with verruca vulgaris in a tertiary hospital
• Syringocystadenoma papilliferum arising from a nevus sebaceus mimicking squamous cell carcinoma in a Filipino female: A case report
• Drug-induced chronic bullous disease of childhood in a two-year-old Filipino male triggered by cefaclor or cefuroxime: A case report
• Lupus panniculitis in an ANA-negative systemic lupus erythematosus patient: A case report
• Angiosarcoma of the scalp in a 79-year-old male: A case report
• Cutaneous Rosai-Dorfman disease in a 40-year-old female: A case report
• A double-blind, randomized controlled trial on the efficacy and safety of intralesional 2% zinc sulfate in the treatment of verruca vulgaris in a tertiary hospital
• A triple-blind, randomized controlled trial on the efficacy and safety of 1.5% Carica papaya latex cream vs. 2% ketoconazole cream in the treatment of pityriasis versicolor among Filipinos
• Cutaneous manifestations in SARS-CoV-2 (COVID-19) infection: A review of clinical, histopathologic features, and management
• Dermatology: Going Digital
• Upper lip squamous cell carcinoma arising from discoid lupus erythematosus treated with standard wide excision
• A case report of a successfully treated Myoplasma-induced rash and mucositis (MIRM) in a 10-year old Filipino
• Guidelines for the management of Atopic Dermatitis: A literature review and consensus statement of the Philippine Dermatological Society
• A double-blind, randomized controlled trial on the efficacy and safety of 4% niacinamide cream on the treatment of mild to moderate chronic plaque psoriasis at the University of Santo Tomas Hospital Out-Patient Department
• Assessment of quality of systematic reviews in dermatology using AMSTAR 2 Part 2 of 2. Validity and reliability testing of AMSTAR 2
• Tumor check trough teledermatology: A critical appraisal
• A case of Bullous Pemphigoid uniquely associated with dipeptidyl Peptidase-4 (DPP-4) inhibitor
• Subcutaneous zygomycosis due to Basidiobolus ranarum in a Filipino child responding to itraconazole: A case report
• Erythrokeratodermia Variabilis et Progressiva in a Filipino Girl: A Case Report
• Widespread hemorrhagic varicella in 2 cases of HIV-AIDS
• Widespread lichen planus pigmentosus in a 32-year-old Filipino male treated with low dose isotretinoin and topical tacrolimus
• Wells’ syndrome in an 18-year-old Filipino female: a case report
• Clinical analysis, diagnosis, and treatment of a 48-year-old female Filipino with Riehl melanosis
• A case of alpha thalassemia trait-associated pyoderma gangrenosum in a three-year-old Filipino male
• Dermatitis herpetiformis-like Linear IgA bullous disease in a Filipino
• Nevus comedonicus in a Filipino girl
• Impetigo herpetiformis in a 33-year-old Filipino female
• Writing in the time of COVID-19 pandemic
• Crusted (Norwegian) scabies in an infant: a case report
• Rhinophyma on hemangioma: a diagnostic conundrum
• Basal cell nevus syndrome in a 48-year-old Filipino
• Epidemiology of exfoliative dermatitis at the University of Santo Tomas Hospital (Department of Dermatology) from 2008-2012: a five-year review
• Assessing quality of systematic reviews in dermatology from the Philippines using AMSTAR 2
• Relapse rate among smear-positive leprosy cases after 12 blister packs and 24 blister packs of multibacillary drug therapy in a tertiary hospital
• Procedural dermatology in the COVID-19 era: an online survey of the Philippine Dermatological Society members and practical recommendations for safe practice
• A double-blind randomized controlled trial on the efficacy and safety of metformin as an adjunct to lymecycline and topical adapalene plus benzoyl peroxide gel in the treatment of moderate to severe acne vulgaris
• Skin manifestations of COVID-19: a preliminary report on 2 patients and review of related literature
• Superficial granulomatous pyoderma mimicking an infectious process
• Primary cutaneous anaplastic large cell lymphoma in a 73-year-old Filipino male
• Pigmented extramammary Paget’s disease: a potential pitfall of misdiagnosis
• Treatment of morphea with narrowband ultraviolet B- a case series-Final
• What makes an article publishable?
• A rare case of confluent and reticulated papillomatosis of Gougerot and Carteaud successfully treated with doxycycline References
• Squamous cell carcinoma of the labia majora in a girl with Hyperimmunoglobulin E syndrome which resolved completely after treatment with cryotherapy and imiquimod References
• Epidermolysis Bullosa Simplex in a 13-year-old Filipino girl (RITM) References
• Molluscum contagiosum-like lesions: a telltale sign of disseminated cryptococcosis (RITM) References
• A case of Sneddon-Wilkinson disease with hypersensitivity to dapsone successfully managed with colchicine (SLMC)
• Ophthalmologic profile among Hansen’s disease patients in a tertiary hospital (RITM) References
• A randomized, double-blind, controlled study on the safety and efficacy of 25% Tinospora rumphii (Makabuhay) cream versus 2% mupirocin cream on superficial pyodermas caused by Staphylococcus aureus (RITM) References
• A randomized, double-blind, placebo-controlled clinical trial of the effects of vitamin D supplementation among diagnosed atopic dermatitis patients (EAMC) References
• A warty plaque on the hand of a teenager References
• Neonatal acne in a 3-week old infant treated with zinc coceth sulfate foam wash References
• Disseminated histoplasmosis in an HIV-positive Filipino References
• Clinical, dermoscopy and histopathological findings in a case of lipoid proteinosis References
• Basal cell nevus syndrome in a 56-year old Filipino female: a case report
• Cutaneous protothecosis: A case report
• The importance of dermoscopy in the diagnosis of lentigo maligna melanoma in a 58-year-old Filipino: a case report
• Treatment of morphea with narrow band ultraviolet B: a case series References
• A randomized, double-blind clinical trial on the efficacy and safety of turmeric 1% cream in the treatment of plaque-type psoriasis in adults References
• Dermoscopic features of red tumors among Filipino patients seen at two centers
• Writing the methods section in a clinical trial report References
• The practical diagnostic approach for hereditary epidermolysis bullosa in the era of next generation sequencing References
• Why to publish a research paper?
• The External Quality Audit at the Research Institute for Tropical Medicine
• The Philippine Association of Medical Journal Editors
• PDS launches JPDS interactive website
• JPDS: then and now
• Prevalence, epidemiology and clinical characteristics of melasma in Philippine dermatology patients: a multicenter, cross-sectional study References
• A Prospective, Randomized, Double-Blind, Comparative Study on the Efficacy and Safety of 2% Enzymatic Virgin Coconut Oil Monoglyceride Cream versus 5% Benzoyl Peroxide Cream in the Treatment of Mild to Moderate Acne Vulgaris
• Single lesion lepromatous leprosy in a teenager: an unexpected scenario
• A randomized, double-blind, comparative study on the safety and efficacy of virgin coconut (Cocos nucifera l.) oil against 1% hydrocortisone lotion as an anti-inflammatory and antipruritic preparation for mosquito reactions
• Primary cutaneous anaplastic large-cell lymphoma with metastases in an 81-year-old Filipino female
• A descriptive study on the clinical, dermoscopic and histopathologic features of pigmented skin lesions among Filipino adults
• It’s a bumpy ride : A report of a 9- year-old Filipino female with dermatomyositis
• Cross-sectional survey on the knowledge, attitudes and practices of Philippine Dermatological Society members related to HIV/AIDS
• Content Analysis of Complementary and Alternative Medicine Literature in the Journal of the Philippine Dermatological Society
• An introduction to observational studies References
• Follicular mycosis fungoides: A report of 2 cases in Filipino octogenarians
• Unusual presentation of erythema elevatum diutinum mimicking a giant wart on the heels of a Filipino male : a case report References
• JPDS online: what are the advantages?
• Schimmelpenning syndrome with didymosisaplasticosebacea in an infant
• A fatal case of staphylococcal scalded skin syndrome associated with iatrogenic Cushing syndrome due to potent topical steroid application in a 3-month-old female: A case report
• Behçet’s disease in 2 Filipinos: a case report
• Acquired hemochromatosis: a case report in a Filipino patient and literature review
• Pigmented purpuric dermatosis (PPD)-like mycosis fungoides on the leg of a Filipino male
• Melasma in brown skin: part 2
• Dyskeratosis congenita diagnosed in an adult male: clinical, dermoscopy and histopathological features
• Cutaneous leishmaniasis in an overseas Filipino worker who responded favorably to oral itraconazole
• Writing results in a clinical trial report References
• Mistaken identity: Eumycetoma Masquerading as Squamous Cell Carcinoma
• A case of disseminated granuloma annulare successfully treated with acitretin and narrowband UV-B phototherapy
• A critical appraisal of an article on therapy: Safety and efficacy of oral fusidic acid as a steroid-sparing agent in the treatment of lepra reactions: an assessor-blinded, randomized controlled clinical trial References
• WPRIM ACCREDITATION
• OFFICIAL LAUNCHING OF THE JPDS WEBSITE
• DEADLINE FOR SUBMISSION OF ARTICLES FOR THE MAY 2019 ISSUE
• Lymphangioma circumscriptum: a case report References
• Interdigital pilonidal sinus: An occupational disease of pet groomers References
• Incontinentia pigmenti: a case report References
• Hypoesthesia and cutaneous eruptions in a patient with T-cell lymphoma: Telltale signs of leprosy, an unrelenting ancient disease References
• Clinician’s handbook in Dermatology 1st edition
• Melasma and Vitiligo in Brown Skin References
• Updates on Sexually Transmitted Infections in the Philippines
• IgA anti-tissue transglutaminase and IgA antiendomysial antibody negative dermatitis herpetiformis in a Filipino patient: A Case Report References
• Pemphigus Vulgaris in a 23-year-old Filipino Male References
• A case of paraneoplastic pemphigus in a 61-year old Filipino female References
• A Case of a 39-year-old Male with Pemphigus Foliaceus References
• A Case of A 2 year old Female with Chronic Bullous Disease of Childhood References
• A case report of linagliptin-associated bullous pemphigoid in a 75-year old Filipino female References
• Dyshidrosiform pemphigoid evolving to Bullous pemphigoid in a 92-year old-male: a case report References
• Methotrexate Toxicity Presenting with Cutaneous Ulcers in a 51-Year Old Female Treated with Low-Dose Methotrexate: A Case Report References
• Dapsone Hypersensitivity Syndrome References
• Toxic Epidermal Necrolysis in Patient with Malignant Lymphoma References
• Generalized bullous fixed drug eruption from vincristine and cyclophosphamide in a patient undergoing chemotherapy for gestational trophoblastic neoplasia References
• A Case of Steven Johnson Syndrome-Toxic Epidermal Necrolysis Overlap with Systemic Lupus Erythematosus References
• Cotrimoxazole-induced generalized bullous fixed drug eruption mimicking stevens-johnson syndrome: a case report References
• A case study of Stevens Johnson Syndrome-Toxic Epidermal Necrolysis Overlap in a 51 year old Filipino female patient treated with Intravenous Immunoglobulin and Corticosteroids. References
• Drug Reaction with Eosinophilia and Systemic Symptom (DRESS Syndrome) Atypical with Acute Kidney Injury References
• Severe Striae and Steroid Acne as Side Effects Caused by Long-term Systemic Corticosteroid Treatment References
• Angioedema and eruption of a maculopapular type drug suspected to be caused by metformin References
• Merkell Cell Carcinoma in a Filipino Male: a Case Report References
• Behcet’s Disease in a 46 year old Filipino female References
• A rare case of Blastic Plasmacytoid Dendritic Cell Neoplasm in a 43-year old Filipino male: a case report References
• Tale of the Red Skin: Sezary Syndrome References
• Bullous eruption in a 1-year-old female in the Philippines: a diagnostic challenge References
• Of zebras and horses: A 34-year old male with confluent and reticulated papillomatosis References
• Syringocystadenoma papilliferum in nevus sebaceus mimicking squamous cell carcinoma in a Filipino female: a case report References
• “The Great Pox of the Fungal World” Mucocutaneous histoplasmosis in a 57-year old HIV-negative Filipino male: A case report References
• Steel magnolias: Erythema induratum in a mother and child References
• Diffuse systemic sclerosis on a young primipara patient References
• A case of mucocutaneous colloid milium in an adult Filipino female with chronic kidney disease References
• A case of adult Filipino male presenting with colocalized psoriasis and segmental vitiligo References
• Behcet’s disease in 2 Filipinos: a case report References
• Primary idiopathic complex aphthosis: diagnosis and successful treatment with colchicine and montelukast in a 44-year old Filipino female References
• Milia en plaque at a new site in the adult population successfully treated with a multimodal approach: a case report and review of literature References
• The value of dermoscopy in generalized granuloma annulare: from time of diagnosis to successful treatment with acitretin and narrowband UV-B phototherapy References
• Content analysis of herbal research studies in the Journal of the Philippine Dermatological Society (1992-2017) References
• Five percent potassium hydroxide solution for the treatment of anogenital warts: a systematic review and meta-analysis of randomized controlled trials References
• Penile calciphylaxis in an end-stage-renal disease patient under conservative management: a case report References
• Clinically amyopathic dermatomyositis associated with a metastatic undifferentiated carcinoma References
• Generalized Discoid Lupus in Systemic Lupus Erythematosus with myelopathy References
• Histopathologic review of calcemic uremic arteriolopathy: case series References
• Clinicopathologic and dermoscopic features of acquired perforating dermatosis: case report References
• A Case of Rhinophyma in a 57-year old Male References
• Spearheading Available Treatment Options for a 17 Year Old Filipino Female with Lymphangioma References
• Bowen Disease: A Case Report References
• Lepromatous leprosy in type 2 reaction in a primigravid, a case report References
• Crusted Scabies: Presenting as Erythroderma in A Patient with Hepatitis B References
• ROM Therapy in Multibacillary Leprosy Patient: A Report of Three Cases References
• A Case of an 18-year-old Filipino Male with Tuberculosis Verrucosa Cutis References
• Lepromatous Leprosy: One Case Report References
• Left Herpes Zoster Ophthalmicus on Elderly Patients References
• A Case of Histoid Leprosy in a 39-year-old Filipino Male References
• Candidiasis Cutis is caused by candida famata References
• A Case of Filariasis in a 68 year old Filipino Female References
• Malignant Transformation of Phaeohyphomycosis into Squamous Cell Carcinoma: A Case Report References
• Recurrent ENL Reaction in MB Leprosy Patient: a Case Report References
• Relationship between interleukin-10 and monoctye count in multibacillary leprosy patients References
• A Case of Erthyema Induratum in a 24-year-old immunocompetent female References
• Epidermolytic Hyperkeratosis with Significant Improvement in Quality of Life after Treatment with Acitretin References
• A case report of Harlequin Ichthyosis References
• A rare case of Confluent and Reticulated Papillomatosis of Gougerot and Carteaud in a 23-year old male treated with Doxycycline References
• Alopecia areata incognito responsive to azathioprine presenting in a patient with uncontrolled iatrogenic hypothyroidism References
• Efficacy and safety of topical adenosine for androgenetic alopecia in adults: a systematic review References
• Acne Keloidalis Nuchae with Tufted Hair Folliculitis in a 42-year-old Male: A Case Report References
• An invasive variant of mammary Paget disease in a Filipino woman with breast carcinoma References
• Pigmented Nodular Basal Cell Carcinoma from a Congenital Melanocytic Nevus in a 68-year old female References
• Clinical, Dermoscopic and Histopathological Features of Pigmented Basal Cell Carcinoma in Filipinos: A Series of 20 Cases References
• A case study of Keratoacanthoma on a 73-year-old Filipino male patient. References
• A rose by any other name: squamous cell carcinoma of the vulva References
• Mimickers of Malignancy – Epithelial Tumors Mimicking Angiosarcoma: A Case Series References
• Tenacious tumors: A case of basal cell nevus syndrome in a 50-year old filipina References
• Big, Hairy and Scary: Congenital Melanocytic Nevus with Malignant Melanoma References
• It comes in threes: A case of syringocystadenoma papilliferum associated with tubular apocrine adenoma and verruca in the axilla of a Filipino female References
• A case study of Clear Cell Acanthoma in a 69 year old Filipino female patient References
• Pigmented trichoblastoma in a Filipino patient: a report of clinicopathologic and dermoscopic features* References
• Topical treatments for seborrheic keratosis: a systematic review References
• Efficacy of azathioprine for alopecia areata: a systematic review of observational and interventional studies References
• Multiple Leiomyoma in a 19-Year Old Filipino Female: A Case Report References
• Primary Cutaneous CD 30-Positive Anaplastic Large Cell Lymphoma presenting as ulcerated nodules in a 50-year old woman References
• Mimicry at its Finest: A case of folliculotropic mycosis fungoides with secondary xanthomatization in a Filipino male References
• CD 30+ anaplastic large cell lymphoma with regional lymph node metastases in a 59-year old male References
• Age in a furrow: a case of a 27-year old male with pachydermoperiostosis References
• Mycosis fungoides mimicking Squamous cell carcinoma in a 38-year old female References
• A Case of Darier’s Disease in a 32-year-old Filipino Female References
• A 17-year old Filipino successfully treated with narrowband UVB for lymphomatoid papulosis and limited cutaneous systemic sclerosis References
• NB-UVB phototherapy for a 70-year-old Filipino male with concomitant nonsegmental vitiligo and mycosis fungoides in patch-plaque stage, a case report References
• A case of a 16-year old male with Tuberous Sclerosis Complex References
• Tattoo-induced pseudolymphoma: a case report References
• Primary Cutaneous Anaplastic Large Cell Lymphoma in a 73-year-old Filipino Male: A Diagnostic Conundrum References
• A Case of Multiple Neurofibromas with Hypertrichosis in a Patient with Neurofibromatosis I References
• A Case of Bilateral Segmental Neurofibromatosis References
• Darier’s Disease in Pregnancy References
• Impetigo Herpetiformis in a 33-year-old Filipino Female: A case report References
• Closure of Post-Excision Defect of Basal Cell Carcinoma With Full Thickness Skin Graft Method: 3 Case Reports References
• Subacute annular pustular psoriasis in pregnancy: a case report References
• Defect Reconstruction Using Transpositional Flap Following Surgery for Nasal Basal Cell Carcinoma References
• Psoriasis vulgaris in an obese boy References
• A case of a 15-year old male with Linear IgA Dermatosis References
• A Case of a 9 year old Male with Pityriasis Lichenoides Chronica References
• Diffuse cutaneous bullous mastocytosis in a Filipino girl: a case report References
• A rare case of Dermatitis Herpetiformis in a 37-year-old Filipino female References
• Cluster of Jewels Pattern in Filipino Child: A Case Report References
• A Case of Epidermolysis Bullosa Simplex in a 13-year-old Filipino Girl: Case Report References
• Uncovering the mask: Linear IgA bullous dermatosis treated with dapsone in a Filipino adult male References
• Erythema induratum in 2 Filipino children: a case report References
• A case report on pemphigus vulgaris in a 14-year-old female References
• A warty plaque on the hand of a 13-year old male student References
• Langerhans Cell Histiocytosis with Hemophagocytic Syndrome in a 1 year and 8 month old female: a case report References
• Harry Potter and the PSORcerer’s Skin: A case of an 11-year old male with Psoriasis References
• Norwegian Scabies in a 2-month-old Filipino male infant: A Case Report References
• Chronic mucocutaneous candidiasis with multiple endocrinopathies in a 7-year old girl References
• Fatal case of staphylococcal scalded skin syndrome associated with topical-steroid-induced iatrogenic cushing syndrome due to potent topical steroid (LS BL cream) application: A rare case report in a 3-month-old female References
• Schimmelpenning syndrome with didymosis aplasticosebacea in 1 month old female References
• Chronic Non-Healing Wounds in Children: What Lies Beneath? A Case of Pediatric Pyoderma Gangrenosum in a 14 year-old Male: A Diagnostic and Treatment Challenge References
• Varicella complicated by staphylococcal scalded skin syndrome in a 1-month old child References
• Neonatal Acne in a 3-week old female infant treated with zinc coceth sulfate foaming wash: a case report References
• A case of persistent exfoliative dermatitis induced by phenobarbital in a 10-year old girl References
• A case of von Zumbusch psoriasis and Cushing syndrome induced by prednisone and clobetasol ointment in a pediatric patient References
• Pityriasis Lichenoides Et Varioliformis Acuta presenting in a 50 year old female: A Case Report References
• A Case of Lichen Striatus in a 31-year old Filipino male References
• Koebner phenomenon in psoriasis vulgaris References
• Inverse psoriasis in obese woman References
• Impact of allergen avoidance on the quality of life among patch test positive patients with allergic contact dermatitis in a tertiary hospital in the Philippines References
• Quality of life of Bullous Pemphigoid patients and its association with disease severity: A 3-year single hospital study References
• Validation study of a psoriasis registry questionnaire References
• Relationship of Whole Blood Zinc Levels to Acne Severity Among Filipinos 18-25 years old: A Cross-sectional Comparative Study References
• Self-medication Practices using Topical Agents: A Cross-sectional Study among Patients at the Dermatology Out-patient Clinic of St. Luke’s Medical Center-Quezon City References
• The association of functional activity limitation and quality of life of leprosy cases in a tertiary hospital: a cross-sectional study References
• Culture-proven skin and soft tissue infections among patients admitted at a tertiary hospital from 2013 to 2017: a five-year review References
• Knowledge, Attitudes and Practices of Barangay Health Workers in Marawi City regarding Hansen’s Disease References
• Prevalence of mucosal and cutaneous disorders among HIV/AIDS adult Filipino patients 18-60 years old seen in a tertiary hospital in Makati city References
• A randomized, double-blind, controlled trial on the antibacterial efficacy and safety of Moringa oleifera leaves Bar Soap and Moringa oleifera seed bar soap compared to Triclosan Against Staphylococcus aureus and Staphylococcus epidermidis References
• Effects of using a gentle cleanser versus water alone in Filipino patients with mild to moderate acne vulgaris: an observer-blinded, randomized controlled trial References
• The efficacy and safety of 75% garlic (Allium sativum) lipid extract versus curettage in the treatment of molluscum contagiosum: A randomized controlled trial References
• A Randomized, Double Blind, Placebo-Controlled Clinical Trial of the effects of Vitamin D supplementation among diagnosed Atopic Dermatitis patients References
• A randomized controlled study on the efficacy and safety of zinc oxide 20% ointment versus salicylic acid 15% + lactic acid 15% ointment in the treatment of patients with verruca vulgaris References
• A pilot study on the effect of acupuncture on facial skin rejuvenation: a clinical and histologic evaluation References
• Effectiveness of the Eczema Action Plan (EAP) in improving the Eczema Area and Severity Index (EASI) scores among pediatric patients with atopic dermatitis: a pragmatic randomized controlled trial References
• Efficacy and Safety of 10% Povidone–Iodine Solution for the Treatment of Molluscum Contagiosum: A double blind, Placebo-Controlled, Randomized Clinical Trial References
• The efficacy and safety of 6% gabapentin topical formulation in the treatment of pruritus in adult Filipino hemodialysis patients: a randomized, double-blind, placebo-controlled study References
• Efficacy of Sunflower seed oil versus control in reducing post-inflammatory hyperpigmentation of the axillae in adult Filipinos: a randomized controlled double-blinded crossover trial References
• Dermatofibrosarcoma protuberans on the leg: pearls in diagnosis and surgical management
• Occupational skin diseases among institutional housekeeping personnel in a government hospital
• Demographic and clinical profiles of adult Filipino patients with psoriasis in Davao City: A cross sectional study
• Putting the spotlight on skin of color
• Pyoderma gangrenosum, acne, hidradenitis suppurativa and arthralgia: PASH or PAPA syndrome? References
• Frontal fibrosing alopecia and lichen planus pigmentosus in an African female References
• Eruptive syringoma presenting clinically as verruca plana in a 51-year-old Filipino female: A case report References
• PUBLICATIONS IN DERMATOLOGY: TRENDS, CONTROVERSIES AND THE FUTURE OF THE JPDS
• A case of Lentigo Maligna in an elderly Filipino man References
• Eosinophilic pustular folliculitis in a 31-year-old Filipino male treated with narrowband ultraviolet B radiation: A case report References
• A validation study of the United Kingdom diagnostic criteria for atopic dermatitis in 2 to 16-year-old Filipino children References
• Scleromyxedema in a 47-year-old female treated with colchicine and topical steroids References
• Non-MDT treatment for paucibacillary leprosy: a systematic review and meta-analysis of randomized controlled trials References
• Paradoxical immune reconstitution inflammatory syndrome (IRIS) of Kaposi sarcoma in an HIV-infected African man References
• Cutaneous manifestations of patients with HIV infection at the Research Institute for Tropical Medicine Dermatology Outpatient Department: A 10-year review References
• Lichen planus pigmentosus in two Filipino males References
• Sample size calculation 101: Unraveling the concepts behind the numbers References
• Photoprotection: Review and updates References
• Touch me not: a report on 2 cases of Glomus tumors showing variation in clinical presentation References
• The CPD Law: A Commitment to Life Long Learning for Medical Professionals References
• A randomized, double-blind, controlled trial on the safety and efficacy of bee propolis 5% ointment versus clobetasol propionate 0.05% ointment for lichen simplex chronicus References
• Dermatomyositis in a 28-year-old Filipino male with Nasopharyngeal carcinoma: A case report References
• Tuberculosis Verrucosa Cutis presenting as diffuse plantar keratoderma in a Filipino female References
• A novel mutation in the EDA gene in a Filipino family with X-linked hypohidrotic ectodermal dysplasia References
• Patient preference on psoriasis treatment in a Philippine tertiary hospital: A conjoint analysis References
• Allergic contact dermatitis to propolis presenting as tinea pedis References
• Squamous cell carcinoma secondary to arsenic keratoses in a father and son References
• Factors related to treatment-seeking behavior among acne patients seen in a tertiary hospital in the Philippines: A cross-sectional study References
• Bubbly lupus: A case of a Filipino woman with bullous systemic lupus erythematosus successfully treated with prednisone and hydroxychloroquine References
• Combination therapy versus monotherapy for moderate to severe chronic plaque psoriasis in adults References
• Mutilating pyoderma gangrenosum in an infant: A case report References
• Pachydermoperiostosis mimicking acromegaly in an adult Filipino male: Case report References
• Non-inferiority trials: Why, what and how? References
• Juvenile hyaline fibromatosis and infantile systemic hyalinosis: The first two reported cases in the Philippines References
• Telangiectasia Macularis Eruptiva Perstans in an Indian man: Correlation between clinical, dermoscopic, histopathological, and immunohistochemical findings References
• Keratoacanthoma centrifugum marginatum in brown skin: A diagnostic conundrum References
• A case report on Chironex sp (box jellyfish) envenomation and literature review on the appropriate management References
• Multiple familial trichoepitheliomas: A disfiguring malady successfully treated with carbon dioxide laser References
• Disseminated superficial porokeratosis in an adult Filipino female treated with oral isotretinoin References