Variables Postoperative complications COR (Crude odds ratio) (95% CI) AOR(Adjusted odds ratio) (95% CI)
Yes No
Anesthesia type
GA 86 (25.3%) 253 (74.7%) 10.87 (2.60;45.35)** 8.72(2.01;37.73)**
SA 2 (3.1%) 64 (96.9%) 1.00 1.00
Intra-operative Blood loss
≤ 500 ml 53 (1.13%) 224 (98.7%) 1.00 1.00
>500ml 35 (27.3%) 93 (73.6%) 1.59 (0.97;2.59)* 2.02 (1.18;3.46)*
Postoperative analgesia administered
No 60 (28.0%) 155 (72.0%) 2.24 (1.35;3.69)** 2.00(1.17;3.43)*
Yes 28 (14.7%) 162 (85.3%) 1.00 1.00
Duration of surgery
≤ 1hour 19 (13.7%) 120 (84.3%) 1.00 1.00
>1 hour 69 (26.0%) 197 (74.0%) 2.21(1.26;3.85)** 2.12 (1.18;3.83)*
**Significant at P<0.001; * Significant at P<0.05
Table 3: Factors that has shown association with post-operative pulmonary complications among patients operated in Gondar University teaching Hospital, from January 1, 2013 to April 30, 2013.