Table 1 Dropout table, comparing pre-operative data in patients with both pre- and one-year postoperative data (n = 2095) with those with no or non-complete one-year postoperative data (n = 528). Data are presented as numbers (n), proportions (%), mean ± standard deviation (SD) or mean with 95% confidence intervals (95% CI)
From: Predictors of satisfaction after lumbar disc herniation surgery in elderly
Patients with pre- and postoperative data n = 2095 | Patients with no or missing postoperative data n = 528 | |
|---|---|---|
Age | 71.5 ± 5.4 | 72.1 ± 6.0 |
Men (%) | 52 | 47 |
Smokers (%) | 10 | 12 |
SF-36 PCS | 39 (38, 39) | 38 (36, 39) |
SF-36 MCS | 27 (27, 28) | 27 (26, 28) |
NRS leg pain | 7.2 (7.0, 7.6) | 6.9 (6.4, 7.7) |
Dominant back pain (%) | 17 | 22 |
Leg pain ≥ back pain (%) | 83 | 78 |
Duration of leg pain (%) | ||
0–3 months | 15 | 15 |
3–12 months | 51 | 48 |
12–24 months | 18 | 21 |
> 24 months | 16 | 15 |