A second smaller trial (n = 26) showed a trend in favor of the excision technique in increasing the cumulative pregnancy rate at 24 months, but the difference between both techniques in this underpowered trial was not statistically significant (RR 5.7, 95% CI 0.68-47) (Beretta et al., 1998).
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The effectiveness of reproductive surgery in the treatment of female infertility: facts, views and vision.
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The laparoscopic treatment of minimal or mild endometriosis shows a trend in increasing the ongoing pregnancy or live birth rate which is marginally significant (RR 1.5, 95% CI 1.0-2.1).