Variable | Coefficient | Standard error | Wald | p-value | Odds ratio | 95%CI |
---|---|---|---|---|---|---|
Age | 0.00 | 0.03 | 0.01 | 0.9406 | 1.00 | 0.94 to 1.07 |
BMI | −0.15 | 0.11 | 1.70 | 0.1921 | 0.87 | 0.70 to 1.08 |
Sex | −1.23 | 0.77 | 2.58 | 0.1080 | 0.29 | 0.06 to 1.31 |
ASA classification 2 (vs 1) | 1.94 | 1.17 | 2.73 | 0.0985 | 6.94 | 0.70 to 69.10 |
Risk factors: | ||||||
 Preoperative Pain | −1.06 | 0.76 | 1.95 | 0.1625 | 0.35 | 0.08 to 1.54 |
 Anxiety-depression | 0.33 | 0.91 | 0.13 | 0.7142 | 1.40 | 0.23 to 8.37 |
 Obesity | 1.15 | 1.22 | 0.90 | 0.3424 | 3.17 | 0.29 to 34.31 |
 Lumbago | −0.47 | 1.20 | 0.16 | 0.6916 | 0.62 | 0.06 to 6.50 |
 Anaesthesia | 0.30 | 0.69 | 0.19 | 0.6629 | 1.35 | 0.35 to 5.24 |
 Constant | 0.73 | 3.13 | 0.05 | 0.8167 |  |  |