2004 | 2008 | |||||||
---|---|---|---|---|---|---|---|---|
RA | No. Comorbid Conditions in Those Without RA | RA | No. Comorbid Conditions in Those Without RA | |||||
0 | 1–2 | 3+ | 0 | 1–2 | 3+ | |||
Unweighted, n | 219 | 1180 | 6275 | 6824 | 184 | 1087 | 5620 | 6760 |
Age, yrs | ||||||||
< 55 | 8.2 | 7.1* | 8.4 | 7.6 | 8.3 | 10.5* | 8.8 | 7.6 |
55–64 | 6.9 | 2.2* | 4.7 | 9.9 | 9.9 | 2.6* | 5.6 | 10.5 |
65–74 | 38.8 | 57.9* | 46.8 | 36.4 | 45.6 | 57.3* | 48.3 | 36.5 |
75–84 | 36.5 | 25.3* | 31.0 | 34.4 | 27.9 | 23.0* | 27.6 | 32.4 |
85+ | 9.7 | 7.4* | 9.1 | 11.6 | 8.3 | 6.6* | 9.6 | 13.1 |
Female | 76.2 | 49.9* | 53.6* | 58.1* | 76.8 | 51.9* | 54.1* | 55.4* |
Disabled | 15.1 | 9.3 | 13.1 | 17.6 | 18.2 | 13.1 | 14.4 | 18.1 |
Income level | ||||||||
< US$25,000 | 62.3 | 51.4* | 54.8 | 63.7 | 48.4 | 46.7 | 47.7 | 55.8 |
US$25,000+ | 37.7 | 48.6* | 45.2 | 36.3 | 51.6 | 53.3 | 52.3 | 44.2 |
Race/ethnicity | ||||||||
Hispanic | 10.1 | 8.0 | 8.3 | 7.3* | 13.9 | 7.6* | 7.6* | 8.3 |
Black/non-Hispanic | 8.3 | 5.3 | 9.6 | 10.6* | 12.2 | 6.9* | 9.5* | 10.4 |
White | 75.7 | 83.8 | 78.8 | 79.4* | 72.1 | 82.9* | 79.9* | 77.8 |
Residence | ||||||||
Rural | 26.5 | 22.8 | 21.9 | 25.0 | 26.1 | 23.8 | 22.8 | 24.4 |
Metropolitan | 73.5 | 77.2 | 78.1 | 75.0 | 73.9 | 76.2 | 77.2 | 75.6 |
Education level | ||||||||
> High school | 40.0 | 45.3 | 42.2 | 39.3 | 41.2 | 48.4 | 47.2* | 41.6* |
High school | 35.1 | 29.8 | 31.6 | 29.3 | 39.9 | 31.6 | 31.0* | 30.8* |
No high school | 25.0 | 24.9 | 26.1 | 31.5 | 18.8 | 20.0 | 21.8* | 27.6* |
Prescription drug coverage | ||||||||
None | 23.3 | 42.5* | 31.0* | 26.3* | 10.9 | 16.4 | 9.7 | 7.9 |
Partial | 19.4 | 21.4* | 25.7* | 28.0* | 4.6 | 5.9 | 4.5 | 4.7 |
Full private | 35.2 | 30.3* | 33.4* | 32.8* | 32.0 | 25.3 | 28.5 | 26.5 |
Full public | 22.1 | 5.7* | 9.9* | 12.9* | 52.4 | 52.3 | 57.3 | 60.9 |
Self-reported health status | ||||||||
Excellent/good | 57.6 | 93.9* | 83.1* | 60.8 | 46.8 | 93.9* | 84.2* | 61.7* |
Fair/poor | 42.4 | 6.1* | 16.9* | 39.2 | 53.2 | 6.1* | 15.8* | 38.3* |
↵* p < 0.05 for comparisons between the RA and non-RA groups (0, 1–2, and 3+) for the study year of interest.