Table 2.
Odds ratio of complications after TKA.
| Obesity | Non-obesity | Odds ratio | Lower CI | Upper CI | P value | |
|---|---|---|---|---|---|---|
| 30 days after TKA | ||||||
| Dislocation N (%) | 43 (0) | 31 (0) | 1.387 | 0.874 | 2.202 | 0.1648 |
| SSI N (%) | 982 (0.008) | 861 (0.007) | 1.142 | 1.042 | 1.252 | 0.0047 |
| MI N (%) | 963 (0.008) | 893 (0.008) | 1.079 | 0.985 | 1.182 | 0.1029 |
| Anemia N (%) | 1195 (0.01) | 1286 (0.011) | 0.929 | 0.858 | 1.005 | 0.0663 |
| Arrhythmia N (%) | 7024 (0.059) | 7246 (0.061) | 0.967 | 0.935 | 1.001 | 0.0552 |
| CHF N (%) | 1245 (0.011) | 1292 (0.011) | 0.963 | 0.891 | 1.042 | 0.3482 |
| AKI N (%) | 2061 (0.017) | 1577 (0.013) | 1.312 | 1.228 | 1.402 | < 0.0001 |
| Cardiac arrest N (%) | 63 (0.001) | 102 (0.001) | 0.617 | 0.451 | 0.845 | 0.0026 |
| DVT N (%) | 495 (0.004) | 392 (0.003) | 1.264 | 1.107 | 1.443 | 0.0005 |
| WC N (%) | 763 (0.006) | 556 (0.005) | 1.375 | 1.232 | 1.534 | < 0.0001 |
| Hematoma N (%) | 559 (0.005) | 486 (0.004) | 1.151 | 1.019 | 1.3 | 0.0237 |
| Pneumonia N (%) | 907 (0.008) | 1066 (0.009) | 0.850 | 0.777 | 0.929 | 0.0003 |
| PE N (%) | 616 (0.005) | 587 (0.005) | 1.050 | 0.937 | 1.176 | 0.4019 |
| Transfusion N (%) | 2135 (0.018) | 2799 (0.024) | 0.758 | 0.717 | 0.803 | < 0.0001 |
| UTI N (%) | 2767 (0.023) | 2492 (0.021) | 1.113 | 1.054 | 1.176 | 0.0001 |
| Narcotics Use N (%) | 84015 (0.71) | 82493 (0.697) | 1.064 | 1.045 | 1.083 | < 0.0001 |
| 90 days after TKA | ||||||
| Dislocation N (%) | 78 (0.001) | 88 (0.001) | 0.886 | 0.653 | 1.202 | 0.4378 |
| SSI N (%) | 1516 (0.013) | 1352 (0.011) | 1.123 | 1.043 | 1.209 | 0.0021 |
| MI N (%) | 1473 (0.012) | 1410 (0.012) | 1.045 | 0.971 | 1.125 | 0.2378 |
| Anemia N (%) | 1506 (0.013) | 1617 (0.014) | 0.930 | 0.867 | 0.999 | 0.0456 |
| Arrhythmia N (%) | 9140 (0.077) | 9825 (0.083) | 0.924 | 0.897 | 0.952 | < 0.0001 |
| CHF N (%) | 1790 (0.015) | 1861 (0.016) | 0.961 | 0.9 | 1.026 | 0.2364 |
| AKI N (%) | 2610 (0.022) | 2122 (0.018) | 1.235 | 1.166 | 1.309 | < 0.0001 |
| Cardiac arrest N (%) | 104 (0.001) | 157 (0.001) | 0.662 | 0.517 | 0.848 | 0.0011 |
| DVT N (%) | 683 (0.006) | 533 (0.008) | 1.283 | 1.145 | 1.437 | < 0.0001 |
| WC N (%) | 1314 (0.011) | 988 (0.008) | 1.334 | 1.228 | 1.449 | < 0.0001 |
| Hematoma N (%) | 653 (0.006) | 594 (0.005) | 1.100 | 0.984 | 1.23 | 0.094 |
| Pneumonia N (%) | 1370 (0.012) | 1642 (0.014) | 0.832 | 0.774 | 0.895 | < 0.0001 |
| PE N (%) | 809 (0.007) | 749 (0.006) | 1.081 | 0.978 | 1.194 | 0.1273 |
| Transfusion N (%) | 2271 (0.019) | 2918 (0.025) | 0.774 | 0.732 | 0.818 | < 0.0001 |
| UTI N (%) | 5081 (0.043) | 4710 (0.04) | 1.082 | 1.039 | 1.127 | 0.0001 |
| Narcotics Use N (%) | 89265 (0.754) | 87657 (0.74) | 1.075 | 1.055 | 1.095 | < 0.0001 |
| One year after TKA | ||||||
| Dislocation N (%) | 282 (0.002) | 276 (0.002) | 1.022 | 0.865 | 1.207 | 0.7993 |
| SSI N (%) | 2193 (0.019) | 1954 (0.017) | 1.125 | 1.058 | 1.196 | 0.0002 |
| MI N (%) | 3117 (0.026) | 2925 (0.025) | 1.067 | 1.014 | 1.123 | 0.0124 |
| Anemia N (%) | 2098 (0.018) | 2278 (0.019) | 0.920 | 0.866 | 0.976 | 0.006 |
| Arrhythmia N (%) | 13752 (0.116) | 14729 (0.124) | 0.925 | 0.902 | 0.948 | < 0.0001 |
| CHF N (%) | 3180 (0.027) | 3182 (0.027) | 0.999 | 0.921 | 1.05 | 0.9797 |
| AKI N (%) | 4306 (0.036) | 3722 (0.031) | 1.163 | 1.112 | 1.216 | < 0.0001 |
| Cardiac arrest N (%) | 235 (0.002) | 339 (0.003) | 0.693 | 0.586 | 0.818 | < 0.0001 |
| DVT N (%) | 1092 (0.009) | 814 (0.007) | 1.345 | 1.228 | 1.473 | < 0.0001 |
| WC N (%) | 1641 (0.014) | 1249 (0.011) | 1.318 | 1.224 | 1.42 | < 0.0001 |
| Hematoma N (%) | 929 (0.008) | 806 (0.007) | 1.154 | 1.05 | 1.268 | 0.0031 |
| Pneumonia N (%) | 3410 (0.029) | 3592 (0.03) | 0.948 | 0.904 | 0.994 | 0.0273 |
| PE N (%) | 1125 (0.01) | 1037 (0.009) | 1.086 | 0.997 | 1.182 | 0.0573 |
| Transfusion N (%) | 2639 (0.022) | 3296 (0.028) | 0.796 | 0.756 | 0.839 | < 0.0001 |
| UTI N (%) | 10411 (0.088) | 9771 (0.083) | 1.072 | 1.041 | 1.103 | < 0.0001 |
| Narcotics Use N (%) | 93180 (0.787) | 91568 (0.773) | 1.083 | 1.062 | 1.104 | < 0.0001 |
•Significant differences are highlighted in bold.