Table 1 Clinical features and outcomes of the cohort of 484 DCM patients.
Variable | Mean ± standard deviation or frequency (proportion) | Range (minimum-maximum) |
|---|---|---|
Patient characteristics | ||
Age (year) | 63.2 ± 11.5 | 36–84 |
Sex (Female) | 170 (35.1) | N/A |
BMI | 22.5 ± 3.4 | 16.6–31.8 |
Current smoking | 271 (56) | N/A |
Duration of symptom (mo) | 18.2 ± 12.5 | 0–60 |
Baseline symptoms | ||
Axial pain intensity | 4.74 ± 2.1 | 0–9 |
Pre-JOA score | 8.5 ± 1.8 | 5–13 |
HADS-D | 8.3 ± 1.9 | 3–14 |
HADS-A | 6.8 ± 2.2 | 4–12 |
SF-36 PCS | 23.6 ± 12.2 | 15.5–44.3 |
SF-36 MCS | 51.0 ± 10.9 | 28.5–62.1 |
Baseline radiological assessment | ||
A–P canal diameter (mm) | 12.3 ± 1.9 | 6.8–14.6 |
C2–C7 Cobb angle (°) | 13.5 ± 8.9 | 8.6–33.5 |
C2–C7 ROM (°) | 34.0 ± 12.8 | 18.6–54.0 |
C2–C7 SVA (mm) | 20.6 ± 11.1 | − 5.3-45.2 |
T1 slope (°) | 28.5 ± 15.3 | 15.8–42.5 |
Anterolisthesis | 33 (6.8) | N/A |
Retrolisthesis | 21 (4.3) | N/A |
Surgical-related factors | ||
Operation time (min) | 164.5 ± 25.6 | 142–218 |
Blood loss (ml) | 284 ± 35 | 215–420 |
No. of laminoplasty levels | 2.8 ± 1.3 | 1–5 |
Laminoplasty | 176 (36.4) | N/A |
Laminectomy | 233 (48.1) | N/A |
Laminectomy + fusion | 75 (15.5) | N/A |
Postoperative parameters | ||
Post-JOA score | 12.7 ± 2.5 | 9–16 |
Axial pain intensity | 3.65 ± 1.8 | 0–7 |
1-year follow up | ||
Axial pain intensity | 2.36 ± 1.2 | 0–6 |
