Table 3.
Population Characteristic | Medicare Linkage | Full Parts A and B FFS Coverage for Either Reference Period | ||||
---|---|---|---|---|---|---|
No (n = 721) | Yes (n = 10 374) | P Value | No (n = 4791) | Yes (n = 5583) | P Value | |
Self‐reported RA in 2004, n (%) | ||||||
No | 554 (6.8) | 7634 (93.2) | 0.16 | 3457 (45.3) | 4177 (54.7) | 0.005* |
Yes | 77 (5.9) | 1236 (94.1) | 616 (49.8) | 620 (50.2) | ||
Do not know | 90 (5.7) | 1503 (94.3) | 718 (47.8) | 785 (52.2) | ||
Age in 2004, mean (SD), yr | 74 (8.3) | 75 (7.5) | 0.002* | 76.3 (8.2) | 73.8 (6.7) | <0.001* |
Sex (n, %) | ||||||
Male | 349 (7.4) | 4372 (92.6) | 0.001* | 2097 (48.0) | 2275 (52.0) | 0.002* |
Female | 372 (5.8) | 6002 (94.2) | 2694 (44.9) | 3308 (55.1) | ||
Race and ethnicity, n (%) | ||||||
Non‐Hispanic White | 563 (6.1) | 8709 (93.9) | <0.001* | 3900 (44.8) | 4809 (55.2) | <0.001* |
Black/African American | 129 (8.8) | 1342 (91.2) | 726 (54.1) | 616 (45.9) | ||
Other | 29 (8.3) | 322 (91.7) | 164 (50.9) | 158 (49.1) | ||
Education, n (%) | ||||||
Less than high school | 228 (7.2) | 2960 (92.8) | 0.31 | 1637 (55.3) | 1323 (44.7) | <0.001* |
High school or equivalent | 354 (6.2) | 5,405 (93.8) | 2356 (43.6) | 3049 (56.4%) | ||
2‐yr college | 22 (7.0) | 292 (93.0) | 140 (48.0) | 152 (52.0) | ||
4‐yr college or more | 117 (6.4) | 1717 (93.6) | 658 (38.3) | 1059 (61.7) | ||
Total household wealth, n (%) | ||||||
<25th percentile | 210 (7.6) | 2567 (92.4) | 0.03* | 1481 (57.1) | 1,113 (42.9) | <0.001* |
25‐50th percentile | 184 (6.6) | 2595 (93.4) | 1261 (48.6) | 1,334 (51.4) | ||
50‐75th percentile | 158 (5.7) | 2608 (94.3) | 1109 (42.8) | 1,484 (57.2) | ||
75th‐99th percentile | 169 (6.1) | 2604 (93.9) | 940 (36.3) | 1,652 (63.7) |
FFS, fee for service; HRS, Health and Retirement Study; RA, rheumatoid arthritis.
* Denotes statistically significant P value at 0.05 α.