Characteristic | HR | 95% CI |
---|---|---|
Population | ||
General population, reference | 1.0 | |
RA | 1.65 | 1.50–1.83 |
Sex | ||
Male, reference | 1.0 | |
Female | 0.51 | 0.48–0.55 |
Age group, yrs | ||
< 40, reference | 1.0 | |
40–59 | 4.72 | 4.09–5.45 |
≥ 60 | 13.30 | 11.54–15.32 |
Socioeconomic status | ||
Rural 1, lowest rural | 1.04 | 0.85–1.27 |
Rural 2 | 0.81 | 0.66–0.99 |
Rural 3 | 0.76 | 0.62–0.92 |
Rural 4 | 1.08 | 0.89–1.31 |
Rural 5, highest rural | 0.93 | 0.75–1.16 |
Urban 1, lowest urban | 1.68 | 1.43–1.98 |
Urban 2 | 1.54 | 1.30–1.81 |
Urban 3 | 1.33 | 1.12–1.56 |
Urban 4 | 1.19 | 1.00–1.42 |
Urban 5, highest urban, reference | 1.0 | |
Not calculated | 0.40 | 0.28–0.57 |
Modified Charlson Comorbidity Index | ||
0 | 1.0 | |
1 | 1.40 | 1.21–1.62 |
> 1–3 | 1.50 | 1.33–1.70 |
> 3 | 1.10 | 0.87–1.39 |
Yr of RA diagnosis | ||
1989–93 | 1.0 | |
1994–98 | 0.86 | 0.78–0.94 |
1999–03 | 0.64 | 0.57–0.71 |
2004–10 | 0.60 | 0.51–0.70 |
RA: rheumatoid arthritis.