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Table 1 Characteristics of the studies included in the review

From: Letrozole versus laparoscopic ovarian drilling in clomiphene citrate-resistant women with polycystic ovary syndrome: a systematic review and meta-analysis of randomized controlled trials

Author (year)

Country

Interventions

Patients (n)

Cycles (n)

Outcomes included in the meta-analysis

Abu Hashim (2010)

Egypt

2.5 mg LE

LOD

128

132

512

525

Ovulation rate, miscarriage rate, pregnancy rate, live birth rates

Liu (2015)

China

2.5 mg LE

LOD

71

70

382

358

Ovulation rate, endometrial thickness, abortion rate, pregnancy rate, live birth rate

Abdellah (2011)

Egypt

5 mg LE

LOD

70

70

346

373

Endometrial thickness, ovulation rate, miscarriage rate, pregnancy rate, live birth rate

Ibrahim (2017)

Egypt

2.5 mg LE

LOD

40

40

40

40

Ovulation rate, abortion rate, pregnancy rate

  1. LE letrozole, LOD laparoscopic ovarian drilling