Table 3 Comparisons of outcomes of patients in different BMI groups
From: Obesity paradox among patients undergoing total knee arthroplasty: a retrospective cohort study
Underweight | Normal weight | Overweight | Obese | p | ||||
|---|---|---|---|---|---|---|---|---|
(n = 27) | (n = 905) | I(n = 863) | II(n = 615) | I (n = 500) | II (n = 59) | |||
All-type complications | 6 (22.2%) | 158 (17.5%) | 118(13.7%) | 86(14.0%) | 60(12.0%) | 10(16.9%) | 0.056 | |
Severe complications | 0 | 27(3.0%) | 16(1.9%) | 15(2.4%) | 11(2.2%) | 3(5.1%) | 0.425 | |
Subtype complications | ||||||||
Venous thromboembolism | 1(3.7%) | 26(2.9%) | 23(2.7%) | 17(2.8%) | 11(2.2%) | 0 | 0.801 | |
Transfusion | 4(14.8%) | 112(12.4%) | 77(8.9%) | 62(10.1%) | 44(8.8%) | 9(15.3%) | 0.097 | |
Wound complication | 1(3.7%) | 19(2.1%) | 9(1.0%) | 14(2.3%) | 6(1.3%) | 0 | 0.155 | |
Pulmonary complication | 0 | 1(0.1%) | 6(0.7%) | 2(0.3%) | 3(0.6%) | 2(3.4%) | 0.012 | |
Cardiac complication | 0 | 9(1.0%) | 10(1.2%) | 5(0.8%) | 3(0.6%) | 1(1.7%) | 0.778 | |
Urinary tract infection | 0 | 8(0.9%) | 3(0.3%) | 2(0.3%) | 1(0.2%) | 1(1.7%) | 0.238 | |
Neurologic complication | 0 | 4(0.4%) | 0 | 4(0.7%) | 1(0.2%) | 2(3.4%) | 0.001 | |
Length of hospital stay(day) | 0.163 | |||||||
Admission to ICU | 1(2.7%) | 12(1.3%) | 7(0.8%) | 4(0.7%) | 6(1.2%) | 1(1.7%) | 0.510 | |