Table 3 Results of multiple regression model of knee prosthesis revision (whatever reason)
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 = 0.223 | |||
Female | 135/7454 | 1 (referent) | 1(referent) | |
Male | 51/2281 | 1.29 (0.93–1.78) | 1.22 (0.88–1.69) | |
Insert | p = 0.0001 | |||
Fixed | 109/6924 | 1 (referent) | 1 (referent) | |
Mobile | 77/2811 | 1.85 (1.38–2.48) | 1.88 (1.40–2.52) | |
Age at surgery (for year) | 186/9735 | 0.95 (0.94–0.97) | 0.95 (0.94–0.97) | p = 0.0001 |
Body Mass Index | p = 0.965 | |||
Normal (BMI <= 25) | 36/1840 | 1 (referent) | 1 (referent) | |
Overweight (25 < BMI <= 30) | 87/4692 | 0.97 (0.66–1.43) | 0.92 (0.62–1.35) | p = 0.661 |
Obese (30 < BMI <= 40) | 59/3031 | 1.04 (0.69–1.57) | 0.91 (0.597–1.382) | p = 0.654 |
Morbidly obese (BMI > 40) | 4/172 | 1.29 (0.46–3.6) | 1.02 (0.36–2.90) | p = 0.967 |