Table 4.

Univariate Cox regression

Factor	β	Standard error	P value	HR	95% CI
					Lower limit	Upper limit
Types of Lung Diseases	-0.115	0.160	0.472	0.891	0.652	1.219
Infection	0.358	0.542	0.509	1.431	0.495	4.137
High blood pressure	0.175	0.408	0.668	1.192	0.535	2.652
Bacterial infection of donor lung	-0.243	0.422	0.565	0.785	0.343	1.792
Functional status	1.341	1.019	0.188	3.825	0.519	28.189
Cold ischemia time	0.384	0.392	0.327	1.469	0.681	3.165
Age	0.956	0.542	0.078	2.601	0.899	7.523
Operation time	0.187	0.387	0.628	1.206	0.565	2.577
Intraoperative blood loss	1.382	0.440	0.002	3.983	1.683	9.427
Intraoperative blood transfusion	-0.312	0.399	0.434	0.732	0.335	1.599
Body mass index	0.039	0.439	0.930	1.039	0.440	2.458
History of smoking	0.613	0.439	0.163	1.847	0.781	4.368
Gender	-0.549	0.387	0.157	0.578	0.270	1.234
Receptor oxygenation index	-1.501	0.613	0.014	0.223	0.067	0.741