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OBJECTIVE: To estimate the influence of the number of liveborn children on the risk of low back pain. METHODS: The study design was a cross-sectional population-based survey. The 4,501 respondents to a postal survey were asked to provide data on the occurrence of low back pain and on any children they had. Data on some potential confounding variables were also obtained. RESULTS: There was an increased risk of low back pain in those who were married compared with those who were unmarried, among both men (odds ratio 1.7) and women (odds ratio 1.6). Among married individuals, there was a linear trend of increasing risk with increasing numbers of children. CONCLUSION: The risk of low back pain is related more to childrearing than to childbearing, although this effect might be partially mediated by unknown confounders associated with increasing family size.


Journal article


Arthritis rheum

Publication Date





1232 - 1235


Adolescent, Adult, Age Factors, Aged, Back Pain, Cross-Sectional Studies, Family Characteristics, Female, Humans, Lumbosacral Region, Male, Middle Aged, Odds Ratio, Parity, Prevalence, Risk Factors, Sex Distribution