| Regression coefficient | OR | 95%CI | P value |
---|---|---|---|---|
Male | 0.827 | 2.287 | 1.03–5.08 | 0.042 |
CCI | −0.133 | 0.875 | 0.70–1.09 | 0.242 |
Pneumonia | −0.585 | 0.557 | 0.225–1.381 | 0.207 |
APACHE II | −0.004 | 0.996 | 0.93–1.06 | 0.899 |
Tracheal suction more than once every 2 h | 2.365 | 10.65 | 4.60–24.62 | <.001 |
Ventilation days | 0.272 | 1.31 | 1.19–1.44 | <.001 |