Table 3.

Comparison of postoperative infections in four groups of patients

Group	Infection				X 2/t‐value	P value
	Yes	No	Overall	Ratio (%)	Fisher
LFITFD ≦ 6 h	6	59	65	9.20	0.117	0.99
6 h < LFITFD ≦ 12 h	9	86	95	9.50
12 h < LFITFD ≦ 24 h	4	32	36	11.10
LFITFD > 24 h	2	17	19	10.50
Overall	21	194	215	9.80

LFITFD, Length from injury to first debridement.