Table 5.

Main predictors of secondary surgical intervention according to multivariate analysis

	p value*	OR (Exp(B))	95% CI for EXP(B)
			Lower	Upper
Adductor tenotomy	< 0.01	6.2	1.8	21.5
Pre-reduction IHDI	0.49	1.5	0.4	4.9
Pre-reduction acetabular index angle	0.02	1.3	1.1	1.5
Avascular necrosis during follow-up	0.36	2.1	0.4	9.6

statistically significant p values are in bold

OR odds ratio

*In a multivariate logistic regression with variables that may affect secondary surgical ratio. Secondary surgical need was found to be related to the adductor tenotomy need during the closed reduction and AI. The confidence interval is rather wide, because the numbers of confounding variables is small