Table 1.
Relationship between body mass index and mean age of patients undergoing total knee replacement
| Normal weight | Overweight | Obese class I & II | Obese class III | One-way ANOVA P (age) |
|||||
| N (%) | Age | N (%) | Age | N (%) | Age | N (%) | Age | ||
| Overall | 4 533 (11.05) | 71.70±9.43 | 12 867 (31.37) | 69.81±9.07 | 19 432 (47.37) | 67.22±8.34 | 4 191 (10.21) | 63.62±7.77 | <0.0001 |
| Male | 1 797 (9.9) | 71.77±9.75 | 6 808 (37.4) | 69.24±9.08 | 8 441 (46.4) | 66.63±8.27 | 1 149 (6.3) | 63.60±7.80 | <0.0001 |
| Female | 2 736 (12.0) | 71.66±9.42 | 6 059 (26.5) | 70.45±8.56 | 10 991 (48.1) | 67.67±8.39 | 3 042 (13.3) | 63.63±8.27 | <0.0001 |
Data are represented as mean±SD or number (percentage). Mean ages among four categories in each registry were significantly different at p<0.001 by post-hoc comparison.
ANOVA, analysis of variance.