Retrospective Analysis of Infection Factors in Secondary Internal Fixation after External Fixation for Open Fracture of a Long Bone: A Cohort of 117 Patients in a Two-Center Clinical Study

Table 2

Variables tested for multivariate analysis.

Variables	value	S E	Wald	OR	95% CI	Hosmer and Lemeshow test
CRP	0.002^a	1.186	9.409	38.002	3.718-388.390
Type of open fracture (Gustilo classification)	0.018^a		10.044			0.835
IIIA	0.977	1.025	0.001	1.030	0.138-7.688
IIIB	0.140	0.949	2.175	4.052	0.631-26.017
IIIC	0.01^a	1.091	6.706	16.845	1.987-142.816
Duration of external fixation	0.026^a		7.282
14-28 d	0.460	1.002	0.545	2.096	0.294-14.939
≥28 d	0.008^a	0.778	7.003	7.837	1.706-36.006

CI: confidential interval. ^a denotes significance. Hosmer and Lemeshow test: denotes that the goodness of fit is acceptable.