Table 1.
Characteristics of study participants
| Characteristic | <65 Years Old (N = 59,087) | ≥65 Years Old (N = 238,090) | ||||||
|---|---|---|---|---|---|---|---|---|
| AS (N = 2,490) | PsA (N = 6,950) | RA (N = 49,647) | P Value | AS (N = 2,750) | PsA (N = 17,779) | RA (N = 217,561) | P Value | |
| Age (y), Mean ± SD | 50.3 ± 9.4 | 52.8 ± 8.6 | 54.9 ± 7.9 | <0.05 | 71.9 ± 5.4 | 72.5 ± 5.8 | 74.7 ± 6.7 | <0.05 |
| Female, % | 31.6 | 60.5 | 78.1 | <0.05 | 34.5 | 60.7 | 76.1 | <0.05 |
| Race/Ethnicity, % | <0.05 | <0.05 | ||||||
| African American | 9.0 | 3.4 | 15.7 | 3.5 | 1.7 | 7.4 | ||
| White | 75.8 | 85.3 | 68.9 | 88.1 | 91.7 | 84.0 | ||
| Hispanic | 8.9 | 7.6 | 15.7 | 3.9 | 5.1 | 5.1 | ||
| Other | 6.3 | 3.7 | 4.2 | 4.5 | 3.4 | 3.5 | ||
| CCI Score, % | <0.05 | <0.05 | ||||||
| 0 | 43.8 | 31.0 | 0 | 31.6 | 26.8 | 0 | ||
| 1‐4 | 53.9 | 64.8 | 94.1 | 62.2 | 66.0 | 89.8 | ||
| ≥5 | 2.3 | 4.2 | 5.9 | 6.2 | 7.2 | 10.2 | ||
| Frail, % | 4.4 | 7.0 | 11.7 | <0.05 | 45.2 | 46.7 | 65.9 | <0.05 |
Abbreviations: AS, ankylosing spondylitis; CCI, Charlson‐Deyo comorbidity index; PsA, psoriatic arthritis; RA, rheumatoid arthritis.