Table 3 Negative binomial regression analysis of potential risk factors for post-operative ventilator-supporting time (hours)
From: Partial upper sternotomy for extensive arch repair in older acute type A aortic dissection patients
Valuables | Univariate | Multivariate a | ||
|---|---|---|---|---|
N = 204 | P | IRR (95%CI) | P | IRR (95%CI) |
Male gender | 0.140 | 1.17 (0.95, 1.44) | – | – |
Age | 0.806 | 1.00 (0.98, 1.02) | – | – |
Mafan syndrome | 0.973 | 1.02 (0.39, 2.68) | – | – |
Hypertension | < 0.001 | 1.73 (1.34, 2.23) | 0.001 | 1.59 (1.25, 2.03) |
Diabetes | 0.009 | 1.55 (1.11, 2.16) | 0.020 | 1.43 (1.06, 1.93) |
Elevated creatinine | 0.014 | 1.32 (1.06, 1.64) | 0.272 | 1.13 (0.91, 1.41) |
BMI ≥ 24 | 0.816 | 0.97 (0.77, 1.23) | – | – |
LVEF < 50% | 0.026 | 1.80 (1.07, 3.00) | 0.027 | 1.69 (1.06, 2.07) |
AR | 0.270 | 1.15 (0.90, 1.46) | – | – |
Malperfusion syndromes | 0.040 | 1.38 (1.01, 1.88) | 0.046 | 1.36 (1.00, 1.83) |
Partial upper sternotomy | < 0.001 | 0.71 (0.59, 0.86) | 0.003 | 0.76 (0.64, 0.91) |
Cardiopulmonary bypass timeb | 0.001 | 1.10 (1.04, 1.17) | 0.006 | 1.07 (1.02, 1.13) |