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. 2013 Apr 29;8(4):e61843. doi: 10.1371/journal.pone.0061843

Table 3. Risk of bias assessment.

Reference Random sequence generation Allocation concealment Blinding (Objective outcomes) Blinding (Subjective outcomes) Incomplete outcome data and withdrawals (Objective outcomes) Incomplete outcome data and withdrawals (Subjective outcomes) Free of selective reporting? Other sources of bias and commentaries
Chrusciak-Talhari 2011 [73] Low Unclear Low “Standardized digital photograph” Unclear (for patient reported adverse events) Low NA Low: retrospective registration: NCT00600548; Authors presented results on all outcome measures that were pre specified as relevant Low: funding: public (FINEP and CNPq./Brazil)
Lopez 2012 [71] Low: generated list in blocks of eight using EpiInfo Low: “Only the clinical coordinator of the study had access to the list and was in charge of allocating treatments” Unclear: no description of the measurement process Low: the assessment of side effects was done according to the Common Terminology Criteria for Adverse Events Low Low Low: retrospective registration: NCT00471705; authors presented results on all outcome measures that were pre specified as relevant Low: funding, Public. Social Protection Ministry of the Republic of Colombia
Lopez-Jaramillo 2010 [81] Low: randomization list using a computer program. Low: randomization process was blinded and centralized. The assigned code was reported to the monitoring nurse who had no contact with the participants. Unclear: no further description of the measurement process nor blinding methods Unclear: no further description of the measurement process nor blinding methods Unclear: 35/178 lost to follow up. Difference according to groups. Unclear: 35/178 lost to follow up. Difference according to groups. Low: authors presented results on all outcome measures that were pre specified as relevant Low: funding: Public. Institute for Science and Technology “COLCIENCIAS
Machado 2010 [74] Low: randomization list using a computer program. Unclear Low: “The area involved was calculated as the product of the two measurements. A standardized digital photograph was also taken from each patient’s lesions at the same time points” Unclear Low Low Low: Retrospective registration: NCT00600548; Authors presented results on all outcome measures that were pre specified as relevant Low: Funding: Mix Brazilian National Research Council (CNPq). Miltefosine was supplied by Aeterna Zentaris GmbH.
Miranda-Verastegui 2009 [76] Low: randomization list using a computer program. Low: “Numbers and corresponding treatment packages were prepared so that both subjects and study investigators were blind to treatment allocation throughout the study”. Low: both creams were identical in appearance. Standardized photograph of each lesion Low: both creams were identical in Standardized photograph of each lesion Low Low Low: prospectively registered: NCT00257530; authors presented results on all outcome measures that were pre specified as relevant Low: Funding: mix. Drugs for Neglected Diseases Initiative (not-for-profit organization). Pharmaceuticals Inc. provided the randomized allocation of imiquimod and placebo creams at no cost
Neves 2011 [69] Low: list of random distribution generated by a biostatistician Unclear: not reported Unclear Unclear Unclear: 75.7% of the patients randomized to Amphotericin B refused to continue in the study when they learned that they would need to come to the hospital for at least 20 days Unclear: 75.7% of the patients randomized to Amphotericin B refused to continue in the study when they learned that they would need to come to the hospital for at least 20 days. 8.1% and 5.4% were loss to follow up in in the meglumine and the pentamidine groups respectively Unclear: some pre specified outcomes were not considered (i.e. relapse); - The trials was not not registered. Low: fundings: Financiadora de Estudos e Projetos (Research and Projects Financing) of the Ministry of Science and Technology - FINEP.
Newlove 2011 [72] Low: randomization table Unclear: sealed envelopes (opaque or numerated not reported) Low: placebo was identical in form, color, and number to treatment Low: placebo was identical in form, color, and number to treatment Low: no loss to follow up Low: no loss to follow up Unclear: prospectively registered: NCT00469495; some pre specified outcomes were not considered (i.e. relapse); Low: funding: public. NIH/FIC and NIH/NIAID
Rubiano 2012 [70] Low: computerized balanced block randomization scheme Low: coordinating center via phone call Low: to eliminate ascertainment bias, treatment outcome was determined by a masked evaluator using standardized photographs of lesions. Low: adverse events were identified by study personnel using a structured questionnaire and classified according to Common Terminology Criteria for Adverse Events Low Low Low: prospective registration NCT00487253; authors presented results on all outcome measures that were pre specified as relevant Low: funding: mix Departamento Administrativo de Ciencia, Tecnologia e Innovacion (COLCIENCIAS); National Institute of Allergy and Infectious Diseases International Collaborations in Infectious Disease Research Program; Fogarty Global Infectious Diseases Research Training Program
Soto 2008 [77] Unclear: not reported Unclear: not reported Unclear Unclear Low Low Unclear: prospective registration: NCT00233545; not all pre specified outcomes were reported. Low: funding: NGO AB Foundation
Velez 2010 [75] Low: list generated randomly in blocks of eight (EpiInfo) Low: only the study coordinator had access to the list Unclear Unclear: adverse events were evaluated according to standard criteria Low: 14.7% were lost in the miltefosine group while 12.6% were lost in the meglumine antimoniate group. Reasons were explained. Low Low: not registered; authors presented results on all outcome measures that were pre specified as relevant Low: funding: public Ministerio de la Protección Social de la República de Colombia