Table 2 The demographics and clinical characteristics for the culture-negative and culture-positive group

Age at revision (yrs)^a

61.3 ± 14.5

62 ± 14.6

60.6 ± 14.7

Gender^b

 Male

25 (40)

9 (29)

16 (52)

 Female

37 (60)

22 (71)

15 (48)

 Malunion

12 (19)

6 (19)

6 (19)

 Nonunion

5 (8)

3 (10)

2 (6)

 AVN

18 (29)

11 (36)

7 (23)

 Combination

13 (21)

4 (13)

9 (29)

 Negative

14 (23)

7 (23)

7 (23)

Shoulder stiffness^{b, c}

34/47 (72)

15/26 (58)

19/21 (91)

Serum CRP level (mg/l)^a

5.4 ± 7.3

3.8 ± 3

6.8 ± 9.7

Time from index surgery until revision (months)^a

16.2 ± 20.6

20.5 ± 24.4

12.4 ± 15.8

ASA score (median, range)

2 (1–3)

2 (1–3)

2 (1–3)