Table 1.
Basic information, rheumatoid factors (RF), and admission reasons of RA patients
| Characteristics | Number of patients | Percentage (%) |
|---|---|---|
| Gender | ||
| Male | 403 | 27.68 |
| Female | 1053 | 72.32 |
| Age (in years) | ||
| < 65 | 545 | 37.43 |
| ≥ 65 | 911 | 62.57 |
| RF index | ||
| RF positive | 1165 | 80.01 |
| RF negative | 291 | 19.99 |
| Admission route | ||
| Consulting room visit | 1150 | 78.98 |
| Emergency room visit | 306 | 21.02 |
| Reason for hospitalization | ||
| Exacerbation of joint pain | 1232 | 84.62 |
| Pneumonia | 134 | 9.20 |
| Regular drug injections | 87 | 5.98 |
| Fever | 54 | 3.71 |
| Cough | 37 | 2.54 |
| Gastrointestinal disease | 12 | 0.82 |
| Total | 1456 | 100.00 |