Skip to main content

Table 1 Overall demographic data

From: Clinical outcomes of two-stage revision for chronic periprosthetic joint infection of the knee: culture-negative versus culture-positive

Characteristic Culture-negative group Culture-positive group p value
Number of knees 57 79  
Sex, male:female, n 14:43 16:63 0.676
Age, year 72.4 ± 7.0 (59–88) 71.1 ± 7.1 (56–86) 0.375
Body mass index, kg/m2 25.2 ± 3.1 (20.4–32.6) 25.9 ± 2.7 (19.6–32.4) 0.175
Source of referral, internal/external, n 15/42 35/44 0.047
ASA classification, 1/2/3/4, n 4/34/18/1 6/47/26/0 0.845
Type of surgery Primary/revision, n 53/4 70/9 0.557
Sinus tract, n 7 (12.3%) 19 (24.1%) 0.121
Duration from the TKA and diagnosis of PJI, month 36.0 ± 44.7 (2–240) 38.8 ± 46.2 (2–216) 0.829
Follow-up duration, month 31.8 ± 22.9 (2–134) 32.9 ± 22.9 (1–120) 0.774
Prior use of antibiotics, n    0.111
 Yes 41 (71.9%) 43 (54.4%)  
 No 9 (15.8%) 22 (27.8%)  
 Unknown 7 (12.3%) 14 (17.7%)  
  1. Data are presented as mean ± standard deviation (range) unless otherwise indicated. ASA American Society of Anesthesiologist