Table 1 Baseline characteristicsa
From: Does obesity affect patient-reported outcomes following total knee arthroplasty?
| Â | BMI groups according to baseline values (kg/m2) | |||||
|---|---|---|---|---|---|---|
Overall N = 7714 | < 25 Normal N = 572 (7.4%) | 25-29.9 Overweight N = 2122 (27.5%) | 30-34.9 Obese class I N = 2314 (29.9%) | 35-39.9 Obese class II N = 1460 (19.0%) | ≥40 Obese class III N = 1246 (16.2%) | |
BMI (kg/m2) | 33.3 ± 6.9 | 23.0 ± 1.6 | 27.7 ± 1.4 | 32.3 ± 1.4 | 37.2 ± 1.44 | 45.0 ± 4.7 |
Age (yrs) | 65.5 ± 8.7 | 70.1 ± 10.3 | 68.7 ± 9.2 | 66.7 ± 8.9 | 65.0 ± 8.3 | 62.2 ± 7.8 |
Sex | ||||||
Female N (%) | 4732 (61.1%) | 402 (69.8%) | 1178 (55.3%) | 1313 (56.6%) | 948 (64.5%) | 891 (71.1%) |
Male N (%) | 3016 (38.9%) | 174 (30.2%) | 952 (44.7%) | 1006 (43.4%) | 522 (35.5%) | 362 (28.9%) |
# of Comorbidities N (%) | ||||||
0 | 6141 (79.3%) | 460 (79.9%) | 1762 (82.7%) | 1848 (79.7%) | 1152 (78.4%) | 919 (73.3%) |
1 | 1439 (18.6%) | 101 (17.5%) | 338 (15.9%) | 419 (18.1%) | 286 (19.4%) | 295 (23.5%) |
2 | 163 (2.1%) | 15 (2.6%) | 29 (1.3%) | 48 (2.1%) | 32 (2.2%) | 39 (3.2%) |
3 | 5 (0.1%) | 0 (0.0%) | 1 (0.1%) | 4 (0.2%) | 0 (0.0%) | 0 (0.0%) |