Table 4 Parameters associated with unsatisfactory outcomes at the final follow-up.

From: Fate of hips complicated by avascular necrosis of the femoral head following reconstructive surgery in nonambulatory patients with cerebral palsy

Parameters

Univariable

Multivariable

OR (95% CI)

p value

OR (95% CI)

p value

Age at surgery

0.85 (0.73 to 0.99)

0.039

0.84 (0.73 to 0.96)

0.013

Sex

1.14 (0.58 to 2.23)

0.711

  

Preoperative migration percentage

1.02 (1.01 to 1.04)

0.001

1.02 (1.00 to 1.04)

0.093

Preoperative acetabular angle

0.98 (0.91 to 1.05)

0.545

  

Preoperative head-shaft angle

1.02 (0.98 to 1.06)

0.326

  

Open reduction

2.41 (1.22 to 4.78)

0.011

1.55 (0.71 to 3.37)

0.268

Pelvic osteotomy

0.82 (0.42 to 1.61)

0.558

  

Postoperative migration percentage

1.03 (1.01 to 1.06)

0.013

1.04 (1.02 to 1.06)

0.001

Postoperative head-shaft angle

1.02 (0.98 to 1.06)

0.338

  

Avascular necrosis

2.87 (1.45 to 5.66)

0.002

2.37 (1.03 to 5.44)

0.042

  1. Generalized estimating equations were used to calculate the ORs and CIs; OR odds ratio, CI confidence interval.