Table 4 Binary logistic regression analysis of Group A.

From: Legg-Calve´-Perthes disease - diagnostic value of acetabular-femoral head match index

 

Round and ovoid, Group (n = 67 hips)

Flat group (n = 17 hips)

Univariate P value

Multivariate P value†

OR (95% CI)

Age* (yr)

6.6 (3–13)

7.0 (3–9)

0.309

 

Sex

  

0.207

 

 Male

54

16

 Female

13

1

Unilateral/bilateral

  

0.836

 

 Unilateral

61

15

 Bilateral

6

2

Stage at first visit

  

0.538

 

 Necrosis

35

6

 Fragmentation

32

11

Herring

  

0.034

0.998

0.009 0.051 (0.005–0.484)

 A

25

0

 B

24

1

 C

18

16

AFMI*

1.16 (0.89–1.43)

1.29 (1.03–1.48)

0.013

26,934 (8.27–8.77*107)

AFMI

Cutoff value (%)

AUC (%)

Specificity/sensitivity

Youden’s index

Group A (necrosis and fragment)

1.275

75.6%

87%/59%

0.454

  1. *The values were given as the mean and the range in parentheses. †The statistical results of OR of Herring stage were compared with type C which was a dummy variable.
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