Fate of stable hips after prophylactic femoral varization osteotomy in patients with cerebral palsy

Table 4 Factors affecting migration percentage after femoral varization osteotomy in displaced hip

	Estimate (%)	95% CI	SE	P-value
Intercept	11.4	1.2 to 21.6	5.2
Follow-up duration (year)	1.6	1.0 to 2.2	0.3	< 0.001
Age at surgery	−0.4	−1.0 to 0.2	0.3	0.194
Sex	−3.3	−7.0 to 0.4	1.9	0.082
GMFCS level III-IV	−3.9	−9.1 to 1.3	2.7	0.139
GMFCS level III-V	0.0	−5.1 to 5.1	2.6	0.998
Anatomical type	−3.6	−9.4 to 2.2	2.9	0.222
Laterality	−3.8	−6.7 to −1.0	1.5	0.009
Concomitant Dega osteotomy	18.9	14.8 to 23.1	2.1	< 0.001

A linear mixed model was used to estimate factors affecting migration percentage
CI confidence interval, SE standard error, GMFCS Gross Motor Function Classification System

ISSN: 1471-2474