Table 2.
Joints With PJI (n = 47) | Joints Without PJI (n = 672) | |||||
---|---|---|---|---|---|---|
Risk Factor | No. | % | No. | % | Odds Ratio | 95% Confidence Interval |
No. of bacteremias ≥2 | 13 | 28 | 96 | 14 | 2.29 | 1.17–4.50 |
BMI ≥25 kg/m2 | 38 | 81 | 473 | 70 | 1.82 | 0.70–4.72 |
Chronic lung disease | 3 | 6 | 33 | 5 | 1.32 | 0.39–4.48 |
Chronic heart disease | 6 | 13 | 72 | 11 | 1.22 | 0.50–2.97 |
Male gender | 21 | 45 | 276 | 41 | 1.16 | 0.64–2.10 |
Knee joint | 29 | 62 | 398 | 59 | 1.11 | 0.60–2.04 |
Time since previous joint replacement, ya | ||||||
<1 | 17 | 36 | 94 | 12 | 1.00 | |
1–10 | 28 | 60 | 672 | 85 | 0.23 | 0.12–0.44 |
>10 | 2 | 4 | 24 | 3 | 0.46 | 0.10–2.13 |
Age at the time of bacteremia, mean (SD),a y | 71 | (11) | 76 | (10) | 0.97 | 0.94–0.99 |
Rheumatic disease | 3 | 6 | 59 | 9 | 0.71 | 0.21–2.35 |
Diabetes | 5 | 11 | 103 | 15 | 0.66 | 0.25–1.70 |
Primary osteoarthritis as indication for primary joint replacement | 43 | 92 | 588 | 88 | 0.65 | 0.23–1.86 |
Use of antibiotic-loaded cement in the primary operation | 35 | 74 | 555 | 83 | 0.59 | 0.30–1.17 |
Abbreviations: BMI, body mass index; PJI, periprosthetic joint infection.
aCalculated for each bacteremia and joint (n = 837) separately.