Journal
JOURNAL OF PAIN
Volume 14, Issue 12, Pages T20-T32Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.jpain.2013.07.014
Keywords
Temporomandibular disorder; prospective cohort studies; demography; socioeconomic factors; population characteristics
Categories
Funding
- National Institutes of Health [U01DE017018, P01NS045685]
- North Florida/South Georgia Veterans Health System, Gainesville, FL
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Although cross-sectional studies of temporomandibular disorder (TMD) often report elevated prevalence in young women, they do not address the risk of its development. Here we evaluate sociodemographic predictors of TMD incidence in a community-based prospective cohort study of U.S. adults. Symptoms and pain-related disability in TMD cases are also described. People aged 18 to 44 years with no history of TMD were enrolled at 4 study sites when they completed questionnaires about sociodemographic characteristics. During the median 2.8-year follow-up period, 2,737 participants completed quarterly screening questionnaires. Those reporting symptoms were examined clinically and 260 had first-onset TMD. Additional questionnaires asked about severity and impact of their symptoms. Univariate and multivariable Cox regression models quantified associations between sociodemographic characteristics and TMD incidence. First-onset TMD developed in 3.9% of participants per annum, typically producing mild to moderate levels of pain and disability in cases. TMD incidence was positively associated with age, whereas females had only slightly greater incidence than males. Compared to whites, Asians had lower TMD incidence whereas African Americans had greater incidence, although the latter was attenuated somewhat after adjusting for satisfaction with socioeconomic circumstances. (C) 2013 by the American Pain Society
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