Table 2.
MRI characteristics, HRLQoL, and functional status in patients with and without spondylolisthesis at 1-year follow-up
| Age | Dural sac area (mm2) |
Multilevel stenosis |
EuroQol-5D | Oswestry disability index |
Estimated walking distance a |
Leg pain, VAS b |
Back pain, VAS b |
|
|---|---|---|---|---|---|---|---|---|
| With olisthesis | 75 (7) | 38 (16) | 1.8 (0.8) | 0.62 (0.23) | 29 (15) | 2.3 (1.1) | 29 (26) | 33 (30) |
| n = | 35 | 35 | 35 | 30 | 21 | 35 | 31 | 32 |
| Without olisthesis | 69 (10) | 45 (17) | 1.5 (0.8) | 0.59 (0.27) | 31 (22) | 2.5 (1.2) | 41.1 (35) | 37 (30) |
| n = | 74 | 74 | 74 | 58 | 43 | 71 | 67 | 68 |
| p-value | 0.004 | 0.04 | 0.6 | 0.6 | 1.0 | 0.5 | 0.1 | 0.6 |
| 95% CI for difference in medians c | –9 to –1 | 1 to 19 | –1 to 1 | –0.11 to 0.04 | –12 to 10.1 | –1 to 1 | –17 to 44 | –22 to 29 |
Mann-Whitney test. Standard deviations in parentheses.
a Estimated walking distance: 1 = < 100 m, 2 = 101–499 m, 3 = 500–1,000 m, and 4 = > 1,000 m.
b VAS: visual analog scale.
c Stratified bootstrap test for difference in medians.