Table 5.
Multivariable analysis of quality-of-life
| Variable | β | 95% CI | p-value |
|---|---|---|---|
| NDI | |||
| Age | −0.46 | −0.76 to −0.17 | 0.002* |
| BMI | 0.44 | −0.08 to 0.96 | 0.098 |
| Sex | −4.90 | −12.05 to 2.25 | 0.178 |
| No. of operative levels | −0.27 | −7.37 to 6.83 | 0.941 |
| SF-12 | |||
| Smoking | −5.73 | −12.0 to 0.54 | 0.073 |
| BMI | −0.34 | −0.74 to 0.06 | 0.091 |
| Diabetes | −4.95 | −11.74 to 1.84 | 0.152 |
| No. of operative levels | −1.814 | −7.27 to 3.64 | 0.513 |
| VAS | |||
| Age | −0.07 | −0.11 to −0.02 | 0.005* |
| Diabetes | 0.63 | −0.73 to 1.99 | 0.360 |
| BMI | 0.04 | −0.04 to 0.12 | 0.339 |
| No. of operative levels | 0.22 | −0.89 to 1.33 | 0.692 |
CI, confidence interval; NDI, Neck Disability Index; BMI, body mass index; SF-12, 12-item Short Form Health Survey; VAS, Visual Analog Scale.
*
p<0.05 considered significant.