Table 4 Associations of age, gender and BMI with x-ray features of lumbar disc degeneration – multivariable ordinal logistic regression model
| Â | Disc space narrowing | Anterior osteophytes | Disc degeneration | ||||||
|---|---|---|---|---|---|---|---|---|---|
Variable | Parameter estimates (β) | aOR (95% CI) | p value | Parameter estimates (β) | aOR (95% CI) | p value | Parameter estimates (β) | aOR (95% CI) | p value |
Age | 0.074 | 1.077 (1.056 – 1.100) | <0.001* | 0.075 | 1.078 (1.056–1.100) | <0.001* | 0.090 | 1.094 (1.072–1.115) | <0.001* |
BMI | 0.023 | 1.023 (0.980–1.069) | 0.301 | 0.058 | 1.059 (1.013–1.108) | 0.012* | 0.060 | 1.062 (1.018–1.108) | 0.005* |
Gender | |||||||||
 Male | -0.245 | 1.277 (0.792 – 2.059) | 0.316 | 0.517 | 1.676 (1.042–2.696) | 0.033* | 0.371 | 1.450 (0.928–2.265) | 0.103 |
 Female | 0.000 |  |  | 0.000 |  |  | 0.000 |  |  |
Pain radiating into legs | |||||||||
 No | –0.161 | 0.851 (0.542 – 1.335) | 0.483 | -0.118 | 0.888 (0.566–1.394) | 0.606 | -0.168 | 0.845 (0.551–1.296) | 0.441 |
 Yes | 0.000 | 1.175 (0.749–1.844) |  | 0.000 |  |  | 0.000 |  |  |