evidencegaps
Primary study · included by 1 review

Age of menarche and primary bladder cancer risk: A meta-analysis and systematic review.

Li 2022b · Li Ya-Dong, Gao Liang, Gou Yuan-Qing, et al. · Urologic oncology · 2022

Included by

Bladder cancer risk factors: a comprehensive umbrella review of meta-analyses.
Non-Cochrane · aetiology · 2026 · cited as Li 2022 · Table 1 (Included MA); References
Outcome this study informsPooled effectEvidenceCertainty
Risk of bladder cancer
With obesity (BMI = >30 kg/m2) vs Without obesity (BMI = >30 kg/m2)
RR 1.03 [0.96, 1.12]23 studies · 29563710 participantsVery low
Risk of bladder cancer
Age at menarche vs Reference category per source meta-analysis
RR 0.96 [0.85, 1.08]12 studies · 1350207 participantsVery low

1 including review in total.