At the study entry , the prevalence of weekly urinary incontinence was lower in the intensive lifestyle intervention group compared with the metformin and placebo groups ( 44.2 % vs 51.8 % , 48.0 % urinary incontinence/week , P = 0.04 ) ; during the 6-year follow-up period , these lower rates in intensive lifestyle intervention were maintained ( 46.7 % , 53.1 % , 49.9 % urinary incontinence/week ; P = 0.03 ) .