Table 4 Chi-square test for the accuracy of predicting the cup of the 2D template method (within ± 1 size)

Gender

Female

121 (73.8%)

28 (17.1%)

149

0

1

Male

12 (80.0%)

3 (20.0%)

15

Side

Right

73 (86.9%)

11 (13.1%)

84

3.788

0.072

Left

60 (75.0%)

20 (25.0%)

80

BMI

 < 18.5

6 (100.0%)

0 (0.0%)

6

1.357

0.726

18.5–23.9

61 (78.2%)

17 (21.8%)

78

24.0–27.9

54 (81.8%)

12 (18.2%)

66

 ≥ 28

12 (85.7%)

2 (14.3%)

14

DDH classification

Crowe I

23 (100.0%)

0(0.0%)

23

20.067

0

Crowe II

26 (68.4%)

12 (31.6%)

38

Crowe III

38 (67.9%)

18 (32.1%)

56

Crowe IV

46 (97.9%)

1 (2.1%)

47