Table 3.
Characteristics at baseline and clinical outcomes at 9 months in the young and over 50s groups
| Y group | O group | P | |
|---|---|---|---|
| Number of cases | 24 | 17 | NA |
| Male, n | 16 (66.7%) | 9 (52.9%) | 0.375 |
| Age, years; median (IQR) | 36.5 (20.3-43.8) | 59.0 (54.0-70.0) | NA |
| JOABPEQ at baseline; median (IQR) | |||
| Pain-related disorders | 14.0 (0-43.0) | 43.0 (21.5-50.0) | 0.051 |
| Lumbar spine dysfunction | 37.5 (25.0-50.0) | 50.0 (33.0-70.5) | 0.131 |
| Gait disturbance | 60.5 (14.0-79.0) | 43.0 (10.5-64.0) | 0.129 |
| Social life dysfunction | 38.0 (8.8-51.0) | 51.0 (32.5-58.0) | 0.133 |
| Psychological disorders | 48.5 (36.8-55.5) | 46.0 (39.0-52.0) | 0.652 |
| VAS score at baseline; median (IQR) | |||
| Low back pain | 6.0 (4.3-8.0) | 5.0 (3.0-5.5) | 0.014* |
| Pain in the buttocks and lower limb | 7.0 (5.0-8.8) | 7.0 (5.0-8.5) | 0.452 |
| Numbness in the buttocks and lower limb | 6.0 (4.3-8.0) | 5.0 (2.5-8.0) | 0.699 |
| JOABPEQ; Effective rate | |||
| Low back pain | 20/24 (83.3%) | 13/16 (81.3%) | 1.000 |
| Lumbar function | 23/24 (95.8%) | 14/17 (82.4%) | 0.290 |
| Walking ability | 17/19 (89.5%) | 14/17 (82.4%) | 0.650 |
| Social life function | 19/24 (79.2%) | 10/17 (58.8%) | 0.184 |
| Mental health | 14/24 (58.3%) | 7/17 (41.2%) | 0.279 |
| Recovery of VAS score ≥ 2 points, n | |||
| Low back pain | 19 (79.2%) | 12 (70.6%) | 0.714 |
| Pain in the buttocks and lower limb | 22 (91.7%) | 15 (88.2%) | 1.000 |
| Numbness in the buttocks and lower limb | 21 (87.5%) | 13 (76.5%) | 0.421 |
| Recovery of VAS score ≥ 50%, n | |||
| Low back pain | 18 (75.0%) | 11 (64.7%) | 0.507 |
| Pain in the buttocks and lower limb | 22 (91.7%) | 14 (82.4%) | 0.633 |
| Numbness in the buttocks and lower limb | 20 (83.3%) | 12 (70.6%) | 0.450 |
χ2 test and Mann-Whitney U test.
Y group, young group; O group, over 50s group; NA, not applicable; JOABPEQ, Japanese Orthopaedic Association Back Pain Evaluation Questionnaire; VAS, visual analogue scale, IQR, interquartile range