Table 2 Comparison of the baseline characteristics of the non-opioid and opioid user cohorts
Baseline Characteristic | Non-opioid user (n = 824) | Opioid user (n = 359) | P value |
|---|---|---|---|
Proportion | 70% | 30% | - |
Female | 62% | 67% | 0.067 |
Mean age (SD) | 67.7 (9.6) | 65.2 (10.4) | < 0.001 |
Mean BMI (SD) | 32.6 (7.3) | 35.4 (23.8) | 0.040 |
TKA | 74% | 58% | < 0.001 |
Right side | 50% | 49% | 0.64 |
Mean Oxford Score (SD) | 15.9 (7.4) | 12.7 (6.8) | < 0.001 |
ASA 1–2 | 64% | 62% | 0.88 |
ASA 3–4 | 36% | 37% | 0.80 |