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. 2020 Feb 11;2020(2):CD001122. doi: 10.1002/14651858.CD001122.pub5

Roy 2009.

Methods Prospective randomised trial conducted in India
Timing: June 2005 to June 2007
Participants 44 women with PCOS, normal hysterosalpingography, normal semen parameters in partners; women were also clomiphene‐resistant. Mean age of women in unilateral group was 28.2 ± 12.7 and in the bilateral group was 28.8 ± 2.9 years
Exclusion: Other causes of infertility like hypothalamic amenorrhoea, Cushing syndrome, premature ovarian failure, congenital adrenal hyperplasia, androgenic ovarian tumours, endometrial tuberculosis, abnormal TSH and prolactin; had already received other regimens of ovulation induction; tubal obstruction, extensive adhesions of the ovaries or fallopian tubes and endometriosis
Interventions Unilateral laparoscopic drilling (n = 22), versus
Bilateral laparoscopic drilling (n = 22)
5 drills performed per ovary. If there was no ovulation evident within 3 months, the women were started on clomiphene citrate 50 mg daily for 5 days increasing up to a maximum of 150 mg daily for 5 days for a maximum of 6 cycles
Follow‐up for 1 year
Outcomes Clinical and biochemical response, ovulation rate and pregnancy rate
Notes No conflict of interest
Clinical trial registration number: not stated
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Quote: "..randomly allocated.."
Comment: No other details provided
Allocation concealment (selection bias) Unclear risk No details provided
Blinding of participants and personnel (performance bias) 
 All outcomes High risk No evidence of blinding of researchers or participant
Blinding of outcome assessment (detection bias) 
 All outcomes Unclear risk No details provided
Incomplete outcome data (attrition bias) 
 All outcomes Low risk All women randomised appear to have been analysed
Selective reporting (reporting bias) Unclear risk We could not retrieve the original protocol. The outcomes listed in the Methods section were reported in the Results
Other bias Low risk No evidence of other risk of bias