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. 2010 Jan 20;2010(1):CD003974. doi: 10.1002/14651858.CD003974.pub3

Roughan 1981.

Methods Design: three group parallel trial 
 Purpose: examine the effect of pelvic floor exercises on orgasmic potential
Participants Patients: female out‐patients not having had an orgasm for two years 
 Baseline comparability: NS
Interventions Placebo: instruction to do relaxation exercises 
 Untreated: no exercises (waiting‐list) 
 Experimental: instructions to do pelvic floor exercises 
 (Co‐intervention: no psychological counselling)
Outcomes Number of women having had orgasm
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Unclear risk NS
Allocation concealment? Unclear risk NS
Blinding? 
 Treatment provider High risk Not described as double‐blind (placebo/exercise instructions)
Blinding? 
 Outcome assessor Unclear risk Not relevant as patient reported outcome
Incomplete outcome data addressed? 
 All outcomes High risk Drop‐out > 15% or NS
Free of selective reporting? Unclear risk No protocol available
Free of other bias? Low risk  
No signs of variance inequality or skewness? Unclear risk Not relevant (binary outcome)
Trial size > 49? High risk N = 26
Clearly concealed allocation + trial size > 49 + drop‐out max 15% High risk Trial size < 49