Table 1.
a Rate of Hospitalization for Patients with Rheumatoid Arthritis (RA) and Patients without RA
| RA Rateb | Non-RA Rateb | Rate Ratio (95% | ||
|---|---|---|---|---|
| Overall | 30.4 | 20.2 | 1.51 (1.42, 1.59) | |
| Sex | Female | 29.0 | 19.2 | 1.51 (1.41, 1.62) |
| Male | 33.6 | 22.4 | 1.50 (1.36, 1.65) | |
| Ages | 18-44 | 12.4 | 8.6 | 1.44 (1.14, 1.84) |
| 45-64 | 22.4 | 10.8 | 2.07 (1.86, 2.32) | |
| 65-84 | 41.1 | 28.1 | 1.46 (1.36, 1.58) | |
| 85+ | 70.3 | 55.6 | 1.26 (1.09, 1.46) | |
| Calendar Years | 1987-1991 | 30.5 | 19.8 | 1.54 (1.27, 1.88) |
| 1992-1996 | 28.4 | 17.6 | 1.61 (1.37, 1.90) | |
| 1997-2001 | 31.0 | 19.2 | 1.61 (1.41, 1.84) | |
| 2002-2006 | 34.5 | 22.1 | 1.56 (1.41, 1.73) | |
| 2007-2012 | 27.8 | 20.4 | 1.36 (1.23, 1.50) | |
| Years After RA Diagnosis | 0-4 | 26.7 | 17.7 | 1.51 (1.36, 1.68) |
| 5-9 | 28.8 | 20.8 | 1.38 (1.24, 1.53) | |
| 10-14 | 30.3 | 23.0 | 1.32 (1.16, 1.50) | |
| 15-19 | 40.0 | 19.9 | 2.01 (1.71, 2.37) | |
| 20+ | 42.0 | 22.6 | 1.86 (1.55, 2.24) |
a
Statistically significant results are presented in bold font.
b
Rate of hospitalizations per 100 person-years.