Metformin vs placebo or no treatment: Clinical pregnancy rate
- Population
- women with polycystic ovary syndrome
- Intervention
- Metformin
- Comparison
- placebo or no treatment
- Outcome
- Clinical pregnancy rate
Reviews word the same question differently. Two decision models (TypeSafe's Jev and Liquid AI's d1) judged each wording of the population, intervention, comparator and outcome against the others, and rows count as this question only when both agree on all four. Timing, setting and subgroup never split a question: they are shown on each row.
Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.
How each review answered it
Current versions only| Question | Effect | Evidence | Status / GRADE |
|---|---|---|---|
Metformin vs placebo or no treatment Clinical pregnancy rate per woman ‐ short protocol GnRH‐antagonist · women with polycystic ovary syndrome Metformin treatment before and during IVF or ICSI in women with polycystic ovary syndrome (2020) · Cochrane | RR 1.38 [0.21, 9.14] | 2 studies · 177 participants | Very low |
Metformin vs placebo or no treatment Clinical pregnancy rate per woman · women with polycystic ovary syndrome Metformin for ovulation induction (excluding gonadotrophins) in women with polycystic ovary syndrome (2019) · Cochrane | OR 1.98 [1.47, 2.65] | 11 studies · 1213 participants | Moderate |
Trials and studies behind the answers
The primary studies that full-text reviews tie to these outcomes. Reviews from the Summary of Findings tier list no included studies here, and trials have not yet been matched to questions on their own, so this list is incomplete.