Table 1 Preoperative patient characteristics

Number of joints

39

43

Mean age at surgery, years (range)

75 (37–104)

70 (36–88)

0.067^a

Gender, male to female

12:27

20:23

0.144^b

Mean follow-up period, months (range)

45 (1–96)

22 (1–48)

< 0.001 ^c

Number of patients administered other antibiotics before this therapy

32

25

0.019 ^b

Mean dose, mg/kg/day (range)

22.3 (13.3–40.0)

6.0 (3.1–10.6)

< 0.001 ^c

Mean duration, day (range)

17 (5–50)

25 (1–106)

0.193^c

Number of patients administered rifampicin

2

35

0.019 ^b

 None

18

12

0.087^b

 Only debridement

7

12

0.286^b

 Debridement and implant removal

0

2

0.272^d

 One-stage revision

0

5

0.035 ^d

 Two-stage revision

13

6

0.038 ^b

 Shift to another antibiotic after identification

1

6

0.071^d