Table 1 Comparison of characteristics of the THA-conversion and THA non-conversion groups

n

27

53

–

–

Men/Women

11/16

30/23

n.s.

χ² test

Age

43.7(21.5–70.5)

41(16–71)

n.s.

t-test

BMI

24 (20–32)^a

21.9 (17–30)

p < 0.01

t-test

Presence of metabolic syndrome

40% (21/53)

44% (12/27)

n.s.

χ² test

Follow up period

13 (11–15)

11.8 (10.0–15.0)

n.s.

t-test

 Steroid

19 (70%)

37 (70%)

n.s.

Residual analysis

 Alcohol

5 (19%)

14 (26%)

 Idiopathic

3 (11%)

2 (4%)

 1

3

9

n.s.

 2

3

28^a

p < 0.01

 3

16

16

n.s.

 4

5^a

0

p < 0.01