Heavy menstrual bleeding among women aged 18-50 years living in Beijing, China: prevalence, risk factors, and impact on daily life.

We also observed a slightly higher prevalence of HMB among obese women (18.2%) compared with normal (18.1%) or overweight women (16.5%); however, these results failed to reach statistical significance ( P = 0.735), most likely due to a small sample size of the obese group ( n = 99 [4.2%]).

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