Table 3.
Concomitant disease in two groups of patients
| Types of concomitant diseases (n, %) | Control group | Case group | χ2 value | Odds ratio (95%CI) | p value |
|---|---|---|---|---|---|
| Respiratory system | 8 (6.1%) | 7 (8.8%) | 0.526 | 0.678 (0.236–1.948) | 0.469 |
| Digestive system | 4 (3.1%) | 4 (5.0%) | 0.516 | 0.598 (0.145–2.463) | 0.473 |
| Bedsore | 1 (0.8%) | 4 (5.0%) | 3.853 | 0.146 (0.016–1.332) | 0.050 |
| Diabetes | 11 (8.4%) | 15 (18.8%) | 4.928 | 0.397 (0.182–0.891) | 0.026 |
| Cardiovascular system | 52 (39.7%) | 45 (56.3%) | 5.481 | 0.512 (0.291–0.900) | 0.019 |
| Abnormal renal function | 14 (10.7%) | 21 (26.3%) | 8.994 | 0.331 (0.157–0.696) | 0.003 |
| Abnormal liver function | 10 (7.6%) | 19 (23.8%) | 10.880 | 0.265 (0.116–0.606) | 0.001 |
| More than 2 concomitant diseases | 22 (16.8%) | 25 (31.3%) | 5.995 | 0.444 (0.230–0.858) | 0.014 |
| Without concomitant disease | 27 (20.6%) | 7 (8.8%) | 5.169 | 2.707 (1.148–6.977) | 0.023 |