Objective: To estimate the prevalence of vitamin D deficiency in women with pelvic floor disorders and to evaluate possible associations between vitamin D levels and pelvic floor disorders.
Methods: Using 2005-2006 National Health and Nutrition Examination Survey data, we performed a cross-sectional analysis of nonpregnant women older than 20 years of age with data on both pelvic floor disorders and vitamin D measurements (n=1,881). Vitamin D levels lower than 30 ng/mL were considered insufficient. The prevalence of demographic factors, pelvic floor disorders, and vitamin D levels were determined, accounting for the multi-stage sampling design; odds ratios (OR) and 95% confidence intervals (CI) were calculated to evaluate associations between vitamin D levels and pelvic floor disorders with control for known risk factors.
• One or more pelvic floor disorders were reported by 23% of women.
• Mean vitamin D levels were significantly lower for women reporting at least one pelvic floor disorder and for those with urinary incontinence, irrespective of age.
• In adjusted logistic regression models, we observed significantly decreased risks of one or more pelvic floor disorders with increasing vitamin D levels in all women aged 20 or older (OR, 0.94; 95% CI, 0.88-0.99) and in the subset of women 50 years and older (OR, 0.92; 95% CI, 0.85-0.99).
• Additionally, the likelihood of urinary incontinence was significantly reduced in women 50 and older with vitamin D levels 30 ng/mL or higher (OR, 0.55; 95% CI, 0.34-0.91).
Conclusion: Higher vitamin D levels are associated with a decreased risk of pelvic floor disorders in women. LEVEL OF EVIDENCE: III.
Source: Obstetrics and Gynecology, April 2010;115(4):795-803. PMID: 20308841, by Badalian SS, Rosenbaum PF. Department of Obstetrics and Gynecology, SUNY Upstate Medical University, and Gynecology and Urogynecology Center, St. Joseph's Hospital Health Center, Syracuse, New York, USA. [Email: firstname.lastname@example.org]