Musculoskeletal pain is associated with incident mobility disability in community-dwelling elders.
BACKGROUND
Identifying mobility disability risk factors may facilitate development of interventions promoting functional independence in older persons. We tested the hypothesis that musculoskeletal pain is associated with first occurrence of severe mobility disability.


METHODS
In a prospective observational study at 40 community-based sites, 759 older Catholic clergy in the Rush Religious Orders Study without baseline dementia, stroke, Parkinson's disease, or severe performance-based mobility disability (defined as gait speed less than or equal to 0.4 m/s) and at least one follow-up mobility evaluation were evaluated over a mean of 8.5 (SD = 3.8) years. All participants were queried about musculoskeletal pain in the year before baseline and underwent annual assessment of mobility.


RESULTS
Using a proportional hazards model adjusted for age, sex, and education, the hazard for incident severe mobility disability was greater for participants reporting pain in the year before baseline (odds ratio = 1.47, 95% confidence interval = 1.17-1.85). Results were unchanged after adjusting for self-reported mobility disability, gait speed, depressive symptoms, body mass index, physical activity, chronic medical conditions, and analgesic use. Compared with no report of musculoskeletal pain, musculoskeletal pain in one or two areas was associated with a 30% greater hazard for incident disability (odds ratio = 1.31, 95% confidence interval = 1.00-1.70). Musculoskeletal pain in three or more areas was associated with an 80% greater hazard for incident disability (odds ratio = 1.80, 95% confidence interval = 1.31-2.47). In participants without baseline self-reported mobility disability (n = 486), musculoskeletal pain was associated with greater hazard for incident self-reported mobility disability (odds ratio = 1.38, 95% confidence interval = 1.11-1.73).


CONCLUSIONS
In older persons, musculoskeletal pain is associated with incident mobility disability.
Rush Alzheimer's Disease Center, 600 South Paulina, Suite 1038, Chicago, IL 60612, USA. raj_c_shah@rush.edu
Raj C
RC
Shah
Aron S
AS
Buchman
Patricia A
PA
Boyle
Sue E
SE
Leurgans
Robert S
RS
Wilson
Gunnar B
GB
Andersson
David A
DA
Bennett
D000203:Activities of Daily Living; D000368:Aged; D000369:Aged, 80 and over; D015331:Cohort Studies; D006233:Persons with Disabilities / Q000706:statistics & numerical data*; D005260:Female; D006801:Humans; D008297:Male; D009140:Musculoskeletal Diseases / Q000150:complications*; D010146:Pain / Q000150:complications*; D016016:Proportional Hazards Models; D011446:Prospective Studies