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Study population demographics and clinical characteristics
| Variable | |
|---|---|
| Age (years) | 45.3 (38–61) |
| Follow-up (years) | 56.5 (40–72) |
| Sex (M/F) | 18 M, 7 F |
| BMI (kg/m2) | 26.3 (22.5–29.0) |
| Smoking habit (yes/no), n (%) | 7 yes (27%), 18 no (73%) |
| Diagnosis Constitutionally narrow canal OPLL Multilevel degenerative disc disease |
N Levels 7 (28%) 3.2 (3–5) 2 (08%) 3.3 (3–4) 16 (64%) 2.5 (2–5) |
