Table 2.

Paired t-test results to compare different methods

	Method 1 vs. 2	Method 1 vs. 3	Method 1 vs. 4	Method 1 vs. 5	Method 2 vs. 3
Superficial SSI	2 (<2.2e-16)	3 (<2.2e-16)	4 (<2.2e-16)	NS	3 (=1.533e-14)
Deep SSI	1 (< 2.2e-16)	1 (= 5.073e-07)	4 (< 9.285e-10)	NS	3 (< 2.2e-16)
Organ Space SSI	1 (< 2.2e-16)	1 (< 2.2e-16)	NS	NS	3 (< 2.2e-16)
Overall SSI	1 (< 2.2e-16)	1 (< 2.011e-13)	4 (< 3.572e-15)	NS	3 (< 2.2e-16)
Pneumonia	1 (< 2.2e-16)	1 (< 2.2e-16)	1 (=2.353e-8)	NS	2 (< 2.2e-16)
UTI	1 (< 2.2e-16)	1 (< 2.2e-16)	1 (< 2.2e-16)	NS	2 (< 2.2e-16)
Sepsis	1 (< 2.2e-16)	1 (< 2.2e-16)	NS	NS	2 (< 2.2e-16)
Septic Shock	NS	1 (< 2.2e-16)	4 (<1.671e-12)	NS	2 (< 2.2e-16)
	Method 2 vs. 4	Method 2 vs. 5	Method 3 vs. 4	Method 3 vs. 5	Method 4 vs. 5
Superficial SSI	4 (< 5.879e-16)	2 (< 2.2e-16)	3 (=0.001203)	3 (< 2.2e-16)	4 (< 2.2e-16)
Deep SSI	4 (< 2.2e-16)	5 (< 2.2e-16)	4 (= 1.151e-14)	5 (= 5.073e-07)	4 (= 9.285e-10)
Organ Space SSI	4 (< 2.2e-16)	5 (< 2.2e-16)	4 (< 2.2e-16)	5 (< 2.2e-16)	NS
Overall SSI	4 (= 1.607e-14)	5 (< 2.2e-16)	3 (= 0.02337)	3 (= 2.011e-13)	4 (< 3.572e-15)
Pneumonia	4 (<2.2e-16)	5 (< 2.2e-16)	4 (< 2.2e-16)	5 (< 2.2e-16)	5 (= 2.353e-8)
UTI	4 (=1.607e-14)	5 (< 2.2e-16)	4 (< 2.2e-16)	5 (< 2.2e-16)	5 (< 2.2e-16)
Sepsis	4 (<2.2e-16)	5 (< 2.2e-16)	4 (< 2.2e-16)	5 (< 2.2e-16)	NS
Septic Shock	4 (<2.2e-16)	NS	4 (< 2.2e-16)	NS	4 (< 2.2e-16)