Table 2 Descriptive characteristics of sample (continuous variables)
From: Back pain and radicular pain after lumbar microdiscectomy
Variable | Mean | SD | N |
|---|---|---|---|
Age group, years | |||
Age group 1 | 32.9 | 6.5 | 176 |
Age group 2 | 59.0 | 10.9 | 177 |
Total | 46.0 | 15.8 | 353 |
Body mass index, kg/m2 | 27.7 | 5.2 | 353 |
Oswestry Disability Index, points | |||
Preoperative | 47.1 | 17.3 | 320 |
3 months after surgery | 15.3 | 15.7 | 182 |
1 year after surgery | 15.3 | 16.3 | 132 |
2 years after surgery | 14.4 | 11.3 | 43 |
Back pain | |||
Preoperative | 59.1 | 28.4 | 300 |
Back pain group 1 | 36.2 | 21.4 | 150 |
Back pain group 2 | 82.0 | 10.1 | 150 |
3 months after surgery | 24.4 | 25.2 | 181 |
1 year after surgery | 26.0 | 26.0 | 137 |
2 years after surgery | 30.3 | 26.2 | 45 |
Leg pain | |||
Preoperative | 68.4 | 26.6 | 298 |
Leg pain group 1 | 48.1 | 23.0 | 149 |
Leg pain group 2 | 88.8 | 7.6 | 149 |
3 months after surgery | 26.7 | 28.2 | 172 |
1 year after surgery | 24.2 | 26.6 | 129 |
2 years after surgery | 28.6 | 28.0 | 45 |