Table 2.
Demographics and baseline characteristics
| Variable | Fast rate (N=44) | Slow rate (N=44) | p-value |
|---|---|---|---|
| Age (yr) | 64.3±10.2 | 64.9±9.2 | 0.769a) |
| Gender | 0.565b) | ||
| Female | 38 (86.4) | 36 (81.8) | |
| Male | 6 (13.6) | 8 (18.2) | |
| Body weight (kg) | 63.4±11.3 | 64.8±14.7 | 0.601a) |
| Height (cm) | 155.6±6.9 | 154.0±15.7 | 0.525a) |
| Body mass index (kg/m2) | 26.2±4.3 | 31.0±19.9 | 0.118a) |
| Level of involvement | 1.9 (1–4) | 1.8 (1–4) | 0.365a) |
| Grading of spinal stenosis on magnetic resonance imaging (%) | |||
| L1–2 (grade 0/1/2/3) | 20.1/39.9/20.0/20.0 | 42.9/42.9/14.3/0.0 | 0.589a) |
| L2–3 (grade 0/1/2/3) | 20.0/40.0/19.0/21.0 | 14.3/57.1/28.6/0.0 | 0.634a) |
| L3–4 (grade 0/1/2/3) | 0.0/59.0/0.0/41.0 | 0.0/57.1/14.3/28.6 | 0.659a) |
| L4–5 (grade 0/1/2/3) | 0.0/0.0/17.7/82.3 | 0.0/42.9/0.0/57.1 | 0.152a) |
| L5–S1 (grade 0/1/2/3) | 21.1/39.9/0.0/39.0 | 14.3/42.9/14.3/28.3 | 0.827a) |
| Duration of symptom (mo) | 17.2±25.3 | 20.0±22.4 | 0.580a) |
| Visual Analog Scale | 7.4±1.9 | 7.7±1.8 | 0.421a) |
| Roland 5-point pain scale | 3.6±1.1 | 3.7±1.1 | 0.623a) |
| Standing tolerance | 0.5±0.8 | 0.4±0.7 | 0.591a) |
| Walking tolerance | 1.1±1.1 | 1.0±1.1 | 0.780a) |
| Patients satisfaction | 0.3±0.5 | 0.4±0.5 | 0.514a) |
Values are presented as mean±standard deviation, number (%), or median (range).
a)
By independent samples t-test.
b)
By chi-square test.