Table 2.

Percentage of major complications in Grade 0–1 vs. Grade 2–5(C-D classification) in both groups

	AP group (n = 27)	Control group (n = 69)	p-value
Pneumonia			0.6942
present  absent	6(22.2%) 21(77.8%)	18(26.1%) 51(73.9%)
Respiratory complications*			0.3392
present  absent	10(37.0%) 17(63.0%)	33(47.8%) 36(52.2%)
Anastomotic leakage			0.8340
present  absent	6(22.2%) 21(77.8%)	14(20.3%) 55(79.7%)
SSI			0.3977
present  absent	1(3.7%) 26(96.3%)	6(8.7%) 63(91.3%)

* Respiratory complications consist of pleural effusion, pneumothorax