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. Author manuscript; available in PMC: 2012 Jun 26.
Published in final edited form as: Clin Obstet Gynecol. 2011 Dec;54(4):720–726. doi: 10.1097/GRF.0b013e3182353e06

Table 1.

Number Needed to Treat by Endometriosis Prevalence in a Population of Subfertile Women

Endometriosis Prevalence in Subfertile Women Number Needed to Treat
10%* 120
20% 60
30% 40
40% 30
50% 24
100%** 12
*

Assumes 10% of patients undergoing laparoscopy have evidence of minimal to mild endometriosis

**

Assumes all patients undergoing laparoscopy have evidence of minimal to mild endometriosis