title: Meta-analysis comparing efficacy of benzoyl peroxide, clindamycin, benzoyl peroxide with salicylic acid, and combination benzoyl peroxide/clindamycin in acne.
abstract: BACKGROUND
  Comparative efficacy of the multiple treatments containing benzoyl peroxide (BPO) and clindamycin (CL) is not established.
  
  
  OBJECTIVE
  We compared the efficacy of topical 5% BPO, 1% to 1.2% CL, 5% BPO with salicylic acid (SA) preparation, and combination BPO/CL in acne lesion reduction.
  
  
  METHODS
  A meta-analysis was conducted using the Cochrane collaboration guidelines in accordance with the PRISMA statement.
  
  
  RESULTS
  A total of 23 studies including 7309 patients were used in the meta-analysis. At 2 to 4 weeks, 5% BPO + SA had statistically greater percent lesion reductions over other groups (weighted mean inflammatory lesion reduction: BPO = 33.4%, CL = 21.5%, BPO + SA = 55.2%, BPO/CL = 40.7%, placebo = 7.3%; weighted mean noninflammatory lesion reduction: BPO = 19.1%, CL = 10.0%, BPO + SA = 42.7%, BPO/CL = 26.2%, placebo = 6.7%). At 10- to 12-week end points, 5% BPO + SA and BPO/CL were similar, with overlapping confidence intervals (weighted mean inflammatory lesion reduction: BPO = 43.7%, CL = 45.9%, BPO + SA = 51.8%, BPO/CL = 55.6%, placebo = 26.8%; weighted mean noninflammatory lesion reduction: BPO = 30.9%, CL = 32.6%, BPO + SA = 47.8%, BPO/CL = 40.3%, placebo = 17.0%).
  
  
  CONCLUSIONS
  Trial heterogeneity, publication bias, and deficits in the reporting of individual primary studies may affect results.
  
  
  CONCLUSIONS
  At early time points, 5% BPO + SA had the best profile. BPO/CL was only incrementally better than BPO alone but was superior to CL alone. At later time points, 5% BPO + SA was similar to BPO/CL.
authors.affiliation: Clinical Unit for Research Trials in Skin, Massachusetts General Hospital, Boston, Massachusetts 02139, USA.
authors.forename: Elizabeth M
authors.initials: EM
authors.lastname: Seidler
authors.forename: Alexa B
authors.initials: AB
authors.lastname: Kimball
mesh_terms: D000152:Acne Vulgaris / Q000188:drug therapy*; D000287:Administration, Topical; D001585:Benzoyl Peroxide / Q000008:administration & dosage*; D002981:Clindamycin / Q000008:administration & dosage*; D004338:Drug Combinations; D006801:Humans; D020156:Salicylic Acid / Q000008:administration & dosage*
chemical_list: D004338:Drug Combinations; D002981:Clindamycin; D020156:Salicylic Acid; D001585:Benzoyl Peroxide