Table 4 Results of multiple regression model of knee prosthesis revision due to infection.
From: Relationship between obesity and early failure of total knee prostheses
Failures/Implants | Unadjusted (95% CI) | Adjusted for all variables* (95% CI) | P (adjusted model) | |
|---|---|---|---|---|
Gender | p = 0.228 | |||
Female | 40/7454 | 1 (referent) | 1(referent) | |
Male | 18/2281 | 1.53 (0.87–2.66) | 1.41 (0.81–2.48) | |
Insert | p = 0.002 | |||
Fixed | 31/6924 | 1 (referent) | 1 (referent) | |
Mobile | 27/2811 | 2.26 (1.35–3.78) | 2.28 (1.36–3.82) | |
Age at surgery (for year) | 58/9735 | 0.95 (0.92–0.99) | 0.95 0.92–0.99) | p = 0.008 |
Body mass index | p = 0.851 | |||
Normal (BMI <= 25) | 10/1840 | 1 (referent) | 1 (referent) | |
Overweight (25 < BMI <= 30) | 31/4692 | 1.24 (0.61–2.53) | 1.17 (0.57–2.38) | p = 0.67 |
Obese (30 < BMI <= 40) | 16/3031 | 1.01 (0.46–2.22) | 0.89 (0.40–1.98) | p = 0.78 |
Morbid obese (BMI > 40) | 1/172 | 1.15 (0.15–8.99) | 0.94 (0.12–7.49) | p = 0.96 |