Table 1 Baseline characteristics of all patients and the two groups defined according to the time-to-reimplantation cutoff of 94 days

Age in years, median (IQR)

72 (62–78)

71 (63–77)

72 (61–80)

0.4437*

Sex

 Women, n (%)

72 (44%)

47(45%)

25 (42%)

0.7456**

 Men, n (%)

91 (56%)

57(55%)

34 (58%)

 BMI, median (IQR)

30 (26–35)

30 (26–33)

31 (26–38)

0.2878*

 CCI, median (IQR)

3 (2–5)

3 (2–4)

4 (3–6)

0.0056*

 Time to reimplantation in days (TTR), median (IQR)

79 (66–110)

70 (62–78)

133 (106–177)

 < 0.0001*

 Patients with a fistula present at first stage, n (%), missing

5 (3%)

28

3 (3%)

14

2 (3%)

14

 > 0.9999*

 Culture-positive infections, n (%)

111 (68%)

71 (68%)

40 (68%)

 > 0.9999*

 CRP in mg/dl (before first stage), median (IQR), missing

2.8 (1.4–9.2)

6

2.6 (1.0–8.1)

3

3.7 (2.1–14.4)

3

0.0141*

 Number of previous aseptic revision surgeries of the same joint, median (IQR), (min–max)

0.0 (0–1)

(0–9)

0.0 (0–1.8)

(0–5)

0.0 (0–1.0)

(0–9)

0.9276*

 Number of previous septic revision surgeries of the same joint, median (IQR), (min–max)

0.0 (0–1)

(0–9)

0.0 (0–1)

(0–9)

0.0 (0–1)

(0–6)

0.8059*