Table 3.
Cause specific mortality among RF(−) RA subjects.
| Cause Specific Mortality | No. Observed Events |
Expected No. Events |
SMR (95% Confidence Intervals) |
|---|---|---|---|
| All Causes* | 138 | 139.8 | 0.99 (0.83, 1.17) |
| Circulatory System | 75 | 64.5 | 1.16 (0.91, 1.46) |
| Respiratory System | 10 | 11.0 | 0.91 (0.44, 1.68) |
| Neoplasms | 23 | 24.5 | 0.94 (0.60, 1.41) |
| Injury and Poisoning | 5 | 3.0 | 1.65 (0.53, 3.83) |
| Mental | 5 | 3.0 | 1.67(0.54, 3.90) |
| Endocrine | 4 | 3.5 | 1.16 (0.32, 2.96) |
| Nervous System | 5 | 3.1 | 1.60 (0.52, 3.74) |
*
Includes 3 deaths of unknown cause, 3 digestive system, 3 genitourinary system, 1 musculoskeletal, and 1 death due to an ill-defined condition