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Familial incidence of urinary incontinence.

OBJECTIVE
The purpose of this study was to evaluate whether urinary incontinence is more common in family members of women with incontinence compared with continent individuals.


STUDY DESIGN
Women who were examined at 2 different outpatient facilities over a 2-year period received a questionnaire that covered social, behavioral, and medical issues. They were also asked whether they had a family member who complained of urinary incontinence and, if so, the degree of the relationship. Subjects were excluded for the following reasons: not mentally competent, difficulty understanding the written English language, and a history of bladder cancer or of acquired or congenital neuropathy. Statistical analyses were conducted with chi-squared tests for differences between groups; a probability of <.05 was defined as significant.


RESULTS
A total of 833 women received the questionnaire; 667 women answered the question about urinary incontinence in family members. These 667 women were divided into 3 groups: group I, 441 incontinent women from the first facility; group II, 112 continent women from the first facility; and group III, 114 continent women from the second facility. Women with at least 1 relative with urinary incontinence were 34.9% in group I, 16.1% in group II, and 5.3% in group III. This difference was statistically significant. In a comparison of group I and group II, the odds that an incontinent woman had at least 1 relative with incontinence were 2.6 times higher (95% CI, 1.50-4.48); comparing group I and group III, the odds were 9.6 times higher (95% CI, 4.17-22.25).


CONCLUSION
In our study population, women with urinary incontinence were more likely to have at least 1 family member also with incontinence when compared with women who were continent.