| Group of conditions | All, Prevalence (95% CI) | Men, Prevalence (95% CI) | Women, Prevalence (95% CI) | P Valuea |
|---|---|---|---|---|
| Group 1: arthritis, osteoarthritis, rheumatoid arthritis, and ankylosing spondylitis (rheumatic diseases) | 62.1 (61.3–62.8) | 38.1 (37.2–39.1) | 75.8 (74.9–76.5) | <.001 |
| Group 2: muscular dystrophy | 9.1 (8.7–9.5) | 8.6 (8.0–9.4) | 9.3 (8.8–9.9) | .21 |
| Group 3: neck or back pain | 51.3 (50.5–52.0) | 41.2 (39.9–42.4) | 56.9 (56.0–57.9) | <.001 |
| Group 4: migraine or other headache | 23.4 (22.8–24.1) | 15.9 (15.0–16.8) | 27.7 (26.8–28.5) | <.001 |
| Painful musculoskeletal conditions (groups 1, 2, and 3) | 66.9 (66.2–67.6) | 51.0 (50.1–52.0) | 76.1 (75.3–76.8) | <.001 |
| Overall prevalence (all groups) | 77.0 (76.3–77.6) | 64.5 (63.3–65.7) | 84.0 (83.3–84.7) | <.001 |
Abbreviation: CI, confidence interval.
a Determined by χ2 test.