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Factors Related to Disease Based on Multiple Logistic Regression Analysis
| Disease | Odds Ratio (95% Confidence Interval) | P | |
| OPLL | Gait disturbance (initial) | 2.74 (1.16-6.50) | 0.022 |
| OPLL + OLF | Gait disturbance (initial) | 4.18 (1.66-10.53) | 0.002 |
OLF = ossification of the ligamentum flavum, OPLL = ossification of the posterior longitudinal ligament
