Table 3.

Comparison of the measurements between the closed and open reduction groups at the final follow-up

	Closed reduction (56 hips)	Open reduction (29 hips)	p value
Acetabular index (°)	25.34 (15–28; 3.14)	27.69 (21–36; 4.19)	0.027
Centre-edge angle (°)	12.61 (− 9–26; 8.30)	10.45 (0–23; 5.58)	0.212
Alsberg angle (°)	77.66 (60–89; 6.84)	81.97 (73–91; 4.33)	0.001
Height-to-width index	0.46 (0.24–0.59; 0.07)	0.46 (0.37–0.57; 0.05)	0.746
Reimer’s migration index (%)	26.09 (5–54; 11.11)	30.23 (17–44; 8.27)	0.081

Data are presented as the mean (range; standard deviation), each p value in the table is calculated by two independent-samples t test