Table 3 Comparison of the clinical characteristics in patients with or without mechanical ventilation (N = 6832)
With mechanical ventilation (N = 2010) | Without mechanical ventilation (N = 4822) | 95% CI of difference between means or percentages | P value | |
|---|---|---|---|---|
Age, mean ± SD, years old | 58.37 ± 16.38 | 54.15 ± 16.31 | 3.376 to 5.076 | < 0.0001 |
Female sex, N (%) | 654 (32.5) | 1384 (28.7) | 1.38 to 6.25% | 0.0016 |
Diabetes mellitus, N (%) | 259 (12.9) | 514 (10.7) | 0.5 to 3.97% | 0.0081 |
Hypertension, N (%) | 205 (10.2) | 704 (14.6) | 2.68 to 6.05% | < 0.0001 |
Coronary artery disease, N (%) | 59 (2.9) | 133 (2.8) | −0.75 to 1.04% | 0.6865 |
Cerebrovascular accident, N (%) | 76 (3.8) | 101 (2.1) | 0.79 to 2.71% | 0.0001 |
Chronic renal failure, N (%) | 24 (1.2) | 29 (0.6) | 0.098 to 1.21% | 0.0110 |
Chronic obstructive pulmonary disease, N (%) | 29 (1.4) | 82 (1.7) | −0.41 to 0.92% | 0.4426 |
Asthma, N (%) | 13 (0.6) | 32 (0.7) | −0.39 to 0.5% | 0.937 |
Liver failure, N (%) | 13 (0.6) | 17 (0.4) | −0.16 to 0.67% | 0.094 |
Atropine use, N (%) | 1577 (78.5) | 2076 (43.1) | 33.06 to 37.67% | < 0.0001 |
Pralidoxime use N (%) | 1453 (72.3) | 2026 (42.0) | 27.84 to 32.7% | < 0.0001 |
Hemodialysis, N (%) | 83 (4.1) | 41 (0.9) | 2.32 to 4.19% | < 0.0001 |
Pneumonia, N (%) | 322 (16) | 170 (3.5) | 10.83 to 14.25% | < 0.0001 |
Hospital mortality rate, N (%) | 671 (33.4) | 229 (4.7) | 26.54 to 30.89% | < 0.0001 |
Hospital days, mean ± SD | 15.42 ± 16.33 | 6.62 ± 7.54 | 8.224 to 9.358 | < 0.0001 |