Genetic and environmental influences on urinary incontinence: a Danish population-based twin study of middle-aged and elderly women

G. Rohr, Jakob Kragstrup, David Gaist, Kaare Christensen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Background. Familial clustering has been reported for urinary incontinence (stress and urge), but different etiologies for the two types of incontinence have been suggested.

Objective. The aim of this study was to estimate the relative influence of genetic and environmental factors on stress, urge, and mixed incontinence among elderly and middle‐aged women.

Methods. This is a population‐based classical twin study of 1168 female twin pairs [548 monozygotic (MZ) and 620 dizygotic (DZ)] from a middle‐aged (46–68 years) and an old (70–94 years) cohort identified in the Danish Twin Registry. Urinary incontinence was assessed with the help of two validated questions identifying stress and urge incontinence in interviews.

Results. For urge incontinence, the tetrachoric correlation was significantly higher for MZ twins, compared to that for DZ twin pairs in both middle‐aged [0.51 (95% CI: 0.26–0.71) versus −0.22 (95% CI: −0.59–0.18)] and elderly [0.50 (95% CI: 0.27–0.68) versus 0.28 (95% CI: 0.02–0.42)], indicating genetic effects. The heritability of urge incontinence was 42% (95% CI: 16–63%) among middle‐aged women and 49% (95% CI: 29–65%) among the elderly. Moreover, mixed incontinence had a substantial genetic component. The role of genetic factors was less clear in stress incontinence.

Conclusions. Genetic factors play a substantial role in the development of urge and mixed incontinence, whereas the role of genetic factors in stress incontinence is less prominent.
Original languageEnglish
JournalActa Obstetricia et Gynecologica Scandinavica
Volume83
Issue number10
Pages (from-to)978-982
ISSN0001-6349
DOIs
Publication statusPublished - 2004

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Urge Urinary Incontinence
Twin Studies
Population
Dizygotic Twins
Stress Urinary Incontinence
Monozygotic Twins
Cluster Analysis
Registries
Interviews

Cite this

@article{44763250ecee11db821c000ea68e967b,
title = "Genetic and environmental influences on urinary incontinence: a Danish population-based twin study of middle-aged and elderly women",
abstract = "Background. Familial clustering has been reported for urinary incontinence (stress and urge), but different etiologies for the two types of incontinence have been suggested.Objective. The aim of this study was to estimate the relative influence of genetic and environmental factors on stress, urge, and mixed incontinence among elderly and middle‐aged women.Methods. This is a population‐based classical twin study of 1168 female twin pairs [548 monozygotic (MZ) and 620 dizygotic (DZ)] from a middle‐aged (46–68 years) and an old (70–94 years) cohort identified in the Danish Twin Registry. Urinary incontinence was assessed with the help of two validated questions identifying stress and urge incontinence in interviews.Results. For urge incontinence, the tetrachoric correlation was significantly higher for MZ twins, compared to that for DZ twin pairs in both middle‐aged [0.51 (95{\%} CI: 0.26–0.71) versus −0.22 (95{\%} CI: −0.59–0.18)] and elderly [0.50 (95{\%} CI: 0.27–0.68) versus 0.28 (95{\%} CI: 0.02–0.42)], indicating genetic effects. The heritability of urge incontinence was 42{\%} (95{\%} CI: 16–63{\%}) among middle‐aged women and 49{\%} (95{\%} CI: 29–65{\%}) among the elderly. Moreover, mixed incontinence had a substantial genetic component. The role of genetic factors was less clear in stress incontinence.Conclusions. Genetic factors play a substantial role in the development of urge and mixed incontinence, whereas the role of genetic factors in stress incontinence is less prominent.",
author = "G. Rohr and Jakob Kragstrup and David Gaist and Kaare Christensen",
year = "2004",
doi = "10.1111/j.0001-6349.2004.00635.x",
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Genetic and environmental influences on urinary incontinence : a Danish population-based twin study of middle-aged and elderly women. / Rohr, G.; Kragstrup, Jakob; Gaist, David; Christensen, Kaare.

In: Acta Obstetricia et Gynecologica Scandinavica, Vol. 83, No. 10, 2004, p. 978-982.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Genetic and environmental influences on urinary incontinence

T2 - a Danish population-based twin study of middle-aged and elderly women

AU - Rohr, G.

AU - Kragstrup, Jakob

AU - Gaist, David

AU - Christensen, Kaare

PY - 2004

Y1 - 2004

N2 - Background. Familial clustering has been reported for urinary incontinence (stress and urge), but different etiologies for the two types of incontinence have been suggested.Objective. The aim of this study was to estimate the relative influence of genetic and environmental factors on stress, urge, and mixed incontinence among elderly and middle‐aged women.Methods. This is a population‐based classical twin study of 1168 female twin pairs [548 monozygotic (MZ) and 620 dizygotic (DZ)] from a middle‐aged (46–68 years) and an old (70–94 years) cohort identified in the Danish Twin Registry. Urinary incontinence was assessed with the help of two validated questions identifying stress and urge incontinence in interviews.Results. For urge incontinence, the tetrachoric correlation was significantly higher for MZ twins, compared to that for DZ twin pairs in both middle‐aged [0.51 (95% CI: 0.26–0.71) versus −0.22 (95% CI: −0.59–0.18)] and elderly [0.50 (95% CI: 0.27–0.68) versus 0.28 (95% CI: 0.02–0.42)], indicating genetic effects. The heritability of urge incontinence was 42% (95% CI: 16–63%) among middle‐aged women and 49% (95% CI: 29–65%) among the elderly. Moreover, mixed incontinence had a substantial genetic component. The role of genetic factors was less clear in stress incontinence.Conclusions. Genetic factors play a substantial role in the development of urge and mixed incontinence, whereas the role of genetic factors in stress incontinence is less prominent.

AB - Background. Familial clustering has been reported for urinary incontinence (stress and urge), but different etiologies for the two types of incontinence have been suggested.Objective. The aim of this study was to estimate the relative influence of genetic and environmental factors on stress, urge, and mixed incontinence among elderly and middle‐aged women.Methods. This is a population‐based classical twin study of 1168 female twin pairs [548 monozygotic (MZ) and 620 dizygotic (DZ)] from a middle‐aged (46–68 years) and an old (70–94 years) cohort identified in the Danish Twin Registry. Urinary incontinence was assessed with the help of two validated questions identifying stress and urge incontinence in interviews.Results. For urge incontinence, the tetrachoric correlation was significantly higher for MZ twins, compared to that for DZ twin pairs in both middle‐aged [0.51 (95% CI: 0.26–0.71) versus −0.22 (95% CI: −0.59–0.18)] and elderly [0.50 (95% CI: 0.27–0.68) versus 0.28 (95% CI: 0.02–0.42)], indicating genetic effects. The heritability of urge incontinence was 42% (95% CI: 16–63%) among middle‐aged women and 49% (95% CI: 29–65%) among the elderly. Moreover, mixed incontinence had a substantial genetic component. The role of genetic factors was less clear in stress incontinence.Conclusions. Genetic factors play a substantial role in the development of urge and mixed incontinence, whereas the role of genetic factors in stress incontinence is less prominent.

U2 - 10.1111/j.0001-6349.2004.00635.x

DO - 10.1111/j.0001-6349.2004.00635.x

M3 - Journal article

VL - 83

SP - 978

EP - 982

JO - Acta Obstetricia et Gynecologica Scandinavica

JF - Acta Obstetricia et Gynecologica Scandinavica

SN - 0001-6349

IS - 10

ER -