Table 2.
a Rate of Hospitalization for Specific Disease Categories of Patients with Rheumatoid Arthritis (RA) and Patients without RA
| Disease Categoriesb | RA Ratec | Non-RA Ratec | Rate Ratio (95% CI) |
|---|---|---|---|
| Infections, Parasitic | 0.7 | 0.3 | 2.59 (1.68, 4.18) |
| Neoplasms | 1.5 | 1.4 | 1.09 (0.86, 1.37) |
| Endocrine, Metabolic | 1.1 | 0.5 | 2.07 (1.50, 2.91) |
| Blood, Blood-Forming Organs | 0.5 | 0.2 | 2.87 (1.73, 5.08) |
| Mental | 1.1 | 0.9 | 1.17 (0.89, 1.54) |
| Nervous, Sense Organs | 0.8 | 0.6 | 1.35 (0.97, 1.88) |
| Circulatory | 6.3 | 5.0 | 1.26 (1.12, 1.42) |
| Respiratory | 3.3 | 2.0 | 1.64 (1.38, 1.96) |
| Digestive | 3.0 | 2.1 | 1.44 (1.20, 1.72) |
| Genitourinary | 1.8 | 1.4 | 1.34 (1.07, 1.67) |
| Complications of Pregnancy (females only) | 0.6 | 0.5 | 1.13 (0.72, 1.76) |
| Skin, Subcutaneous | 0.8 | 0.2 | 3.32 (2.16, 5.40) |
| Musculoskeletal, Connective Tissue | 4.5 | 1.8 | 2.56 (2.16, 3.05) |
| Injury, Poisoning | 3.0 | 1.9 | 1.59 (1.33, 1.91) |
| Symptoms and Ill-defined conditions | 1.4 | 1.4 | 1.00 (0.79, 1.26) |
a
Statistically significant results are presented in bold font.
b
Results for the following CCS categories were not shown due to fewer than 10 total hospitalizations in the RA cases: congenital anomolies; conditions originating in the perinatal period; residual/unclassified codes.
c
Rate of hospitalizations per 100 person-years