Zullo 2000.

Methods	A randomised controlled trial
Participants	62 infertile women with PCOS from University hospitals and a private day surgery unit in Naples, Italy. Time frame not stated
Interventions	In group A (n = 32), ovarian drilling was performed by mini‐laparoscopy under local anaesthesia plus conscious sedation. In group B (n = 30), the control group underwent ovarian drilling by the traditional laparoscopic approach under general anaesthesia
Outcomes	Hormonal profile including testosterone levels, pain scores post‐surgery (follow‐up period of 1 year)
Notes	Funding source: Not stated Declarations of interest: Not stated.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	"randomly allocated".
Allocation concealment (selection bias)	Unclear risk	Not stated
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not stated but not possible due to study design
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not stated
Incomplete outcome data (attrition bias) All outcomes	Low risk	No attrition
Selective reporting (reporting bias)	Low risk	None detected
Other bias	Low risk	None detected

BMI: body mass index
 CC: clomiphene citrate
 FAI: free androgen index
 FSH: follicle stimulating hormone
 GnRHa: gonadotrophin‐releasing hormone
 J: joule(s)
 LH: luteinising hormone
 OCP: oral contraceptive pill
 OHSS: ovarian hyperstimulation syndrome
 W: watt(s)