Table 3 Cox proportional Hazard Model for re-operation after first lumbar disc herniation surgery.
Hazard Ratio | 95% Confidence Interval * | p-value | |
|---|---|---|---|
Female sex | 1.47 | 0.19 to 11.19 | 0.71 |
Age, years | 0.98 | 0.92 to 1.04 | 0.53 |
Body mass index >27.0 | 1.62 | 0.42 to 6.29 | 0.36 |
Duration of pain, mo | 1.01 | 0.98 to 1.02 | 0.66 |
Back pain per 10 mm on VAS | 1.17 | 0.88 to 1.54 | 0.27 |
Leg pain per 10 mm on VAS | 1.01 | 0.73 to 1.40 | 0.94 |
Leisure time physical activity | 1.09 | 0.93 to 1.28 | 0.28 |
Employment | 1.16 | 0.00 to >50 | 0.96 |