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Incident arthritis in relation to excess weight
1Health Statistics Division, Statistics Canada, Ottawa, Ontario, K1A 0T6. Kathryn.Wilkins@statcan.ca
Health Reports
|March 6, 2004
Summary
Obesity significantly increases the risk of developing arthritis in adults over 40. This study found a 1.6 times higher odds of arthritis for obese individuals, highlighting the importance of weight management for joint health.
Area of Science:
- Public Health
- Epidemiology
- Rheumatology
Background:
- Arthritis is a prevalent condition affecting adults, with incidence and risk factors requiring ongoing investigation.
- Excess weight is a suspected contributor to arthritis development, necessitating further epidemiological study.
Purpose of the Study:
- To determine the incidence rates of arthritis in adults aged 40 and older.
- To investigate the association between excess weight (obesity) and the subsequent development of arthritis, controlling for confounding variables.
Main Methods:
- Utilized data from Statistics Canada's Canadian Community Health Survey (2000/01) and National Population Health Survey (1994/95-2000/01).
- Employed cross-sectional analysis for prevalence estimation and longitudinal analysis for incidence density calculation.
- Logistic regression was used to assess the relationship between obesity and doctor-diagnosed arthritis, adjusting for demographic and lifestyle factors.
Main Results:
- In 2000/01, arthritis prevalence was 19% for men and 31% for women aged 40+.
- Incidence rates were 31/1,000 person-years for men and 48/1,000 person-years for women.
- Obesity showed a significant association with subsequent arthritis, with an odds ratio of 1.6 for both sexes.
Conclusions:
- Obesity is a significant risk factor for developing arthritis in adults aged 40 and older.
- Findings underscore the importance of weight management in preventing arthritis and reducing its public health burden.