Variables | Crude HR (95%CI) | p value for interaction | Adjusted HR (95% CI) | p value for interaction |
---|---|---|---|---|
Age | ||||
 < 65 years | 1.436 (1.200–1.717) | 0.279 | 1.026 (0.772–1.220) (0.772–1.220) | 0.110 |
 ≥ 65 years | 1.804 (1.530–2.126) | 1.307 (1.075–1.590) (1.075–1.590) | ||
Gender | Â | Â | Â | Â |
 Female | 1.650 (1.333–2.044) | 0.420 | 1.429 (1.093–1.868) | 0.321 |
 Male | 1.419 (1.227–1.640) | 1.070 (0.896–1.277) | ||
BMI | ||||
 < 18 | 1.378 (0.830–2.286) | 0.050 | 1.558 (0.884–2.745) | 0.248 |
 ≥ 18 | 1.559 (1.376–1.766) | 1.131 (0.970–1.318) | ||
CCI | ||||
 < 3 | 1.272 (1.021–1.586) | 0.010 | 1.038 (0.733–1.282) | 0.040 |
 ≥ 3 | 1.829 (1.585–2.110) | 1.205 (1.012–1.435) | ||
APACHE II | ||||
 < 25 | 1.073 (0.815–1.412) | 0.344 | 1.136 (0.845–1.528) | 0.361 |
 ≥ 25 | 1.342 (1.172–1.537) | 1.282 (1.095–1.500) | ||
FiO2 (%) | ||||
 < 50 | 1.003 (0.814–1.235) | 0.010 | 1.080 (0.852–1.369) | 0.160 |
 ≥ 50 | 1.289 (1.090–1.525) | 1.184 (0.965–1.452) | ||
PEEP (cmH2O) | ||||
 < 8 | 1.215 (0.772–1.912) | 0.927 | 2.119 (1.227–3.659) | 0.230 |
 ≥ 8 | 1.119 (1.047–1.367) | 1.100 (0.940–1.289) |