Prevalence of incontinence (A) according to age group, (B) according to age group by menopausal status.

<p>The error bars represent the upper standard error. (A) The prevalence of incontinence increased with age, reaching a peak at 60-69-years-of-age (p for linear association < 0.0001), (B) In the premenopause group, the prevalence of incontinence increased with age (p for linear association < 0.0001), in the postmenopause group, the prevalence of incontinence plateaued and was not appreciably different among each age group (p for linear association > 0.2008).</p>