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. 2004 Jul 19;2004(3):CD003678. doi: 10.1002/14651858.CD003678.pub2

Summary of findings 4. Post‐surgical medical therapy compared to placebo or no treatment for endometriosis.

Post‐surgical medical therapy compared to placebo or no treatment for endometriosis
Patient or population: patients with endometriosis 
 Intervention: Post‐surgical medical therapy 
 Comparison: placebo or no treatment
Outcomes Illustrative comparative risks* (95% CI) Relative effect 
 (95% CI) No of Participants 
 (studies) Quality of the evidence 
 (GRADE) Comments
Assumed risk Corresponding risk
placebo or no treatment Post‐surgical medical therapy
Pain (VAS) ‐ Dysmenorrhoea at 12 months   The mean Pain (VAS) ‐ Dysmenorrhoea at 12 months in the intervention groups was 
 0.58 standard deviations lower 
 (0.87 to 0.28 lower)   187 
 (1 study) ⊕⊕⊝⊝ 
 low1,2 SMD ‐0.58 (‐0.87 to ‐0.28)
Pain (dichotomous) ‐ Pain recurrence </= 12 months 273 per 1000 207 per 1000 
 (142 to 300) RR 0.76 
 (0.52 to 1.1) 332 
 (3 studies) ⊕⊕⊝⊝ 
 low3  
Pain (dichotomous) ‐ pain persistence/recurrence 5 years 480 per 1000 446 per 1000 
 (254 to 797) RR 0.93 
 (0.53 to 1.66) 54 
 (1 study) ⊕⊝⊝⊝ 
 very low2,4  
Recurrence ‐ AFS Score ‐ Total AFS score (12 months)   The mean Recurrence ‐ AFS Score ‐ Total AFS score (12 months) in the intervention groups was 
 2.29 lower 
 (4.69 lower to 0.11 higher)   43 
 (1 study) ⊕⊕⊝⊝ 
 low2,5  
*The basis for the assumed risk (e.g. the median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI). 
 CI: Confidence interval; RR: Risk ratio;
GRADE Working Group grades of evidence 
 High quality: Further research is very unlikely to change our confidence in the estimate of effect. 
 Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate. 
 Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate. 
 Very low quality: We are very uncertain about the estimate.

1 There are inadequate details on blinding and attrition 
 2 Evidence is based on a single study 
 3 Two of the trials did not provide adequate details for allocation concealment or attrition and there was no blinding 
 4 The trial lacked details on all methodological aspects and there was no blinding 
 5 The trial lacked details on allocation concealment and randomisation