| Severity of disability | Intensity of pain | ||
---|---|---|---|---|
Variables | β coefficient (95% confidence itervals) | p value | β coefficient (95% confidence intervals) | p value |
Regression model 1 | ||||
Intercept | 22.945 (14.589 – 31.301) | <0.001* | 47.375 (34.766 – 59.984) | <0.001* |
Severity of disc space narrowing | ||||
 Grade 0 | 0.000 |  | 0.000 |  |
 Grade 1 | -0.311 (-3.301 – 2.679) | 0.839 | 3.896 (-0.616 – 8.408) | 0.091 |
 Grade 2 | 2.751 (-0.934 – 6.437) | 0.143 | 2.007 (-3.555 – 7.569) | 0.479 |
Age (years) | -0.014 (-0.133 – 0.106) | 0.824 | -0.173 (-0.352 – 0.007) | 0.060 |
Gender | ||||
 Male | 0.000 |  | 0.000 |  |
 Female | 7.369 (4.446 – 10.293) | <0.001* | 4.899 (0.488 – 9.311) | 0.030* |
Body mass index (kg/m2) | 0.042 (-0.236 – 0.320) | 0.765 | -0.049 (-0.468 – 0.370) | 0.819 |
Pain radiating into legs | ||||
 No | 0.000 |  | 0.000 |  |
 Yes | 6.989 (4.174 – 9.803) | <0.001* | 12.262 (8.015 – 16.508) | <0.001* |
Regression model 2 | ||||
Intercept | 22.049 (13.736 – 30.362) | <0.001* | 49.630 (37.099 – 62.161) | <0.001* |
Severity of anterior osteophyte | ||||
 Grade 0 | 0.000 |  | 0.000 |  |
 Grade 1 | 2.136 (-0.565 – 4.838) | 0.121 | 4.836 (0.764 – 8.908) | 0.020* |
 Grade 2 | -2.309 (-7.727 – 3.108) | 0.403 | 2.931 (-5.235 – 11.097) | 0.482 |
Age | 0.001 (-0.118 – 0.120) | 0.989 | -0.200 (-0.379 – -0.021) | 0.029* |
Gender | ||||
 Male | 0.000 |  | 0.000 |  |
 Female | 7.374 (4.448 – 10.301) | <0.001* | 5.507 (1.096 – 9.918) | 0.014* |
Body mass index (kg/m2) | 0.037 (-0.241 – 0.315) | 0.794 | -0.130 (-0.550 – 0.289) | 0.543 |
Pain radiating into legs | ||||
 No | 0.000 |  | 0.000 |  |
 Yes | 6.889 (4.076 – 9.702) | <0.001* | 12.045 (7.805 – 16.285) | <0.001* |
Regression model 3 | ||||
Intercept | 22.710 (14.255 – 31.164) | <0.001* | 49.254 (36.523 – 61.985) | <0.001* |
Severity of lumbar disc degeneration | ||||
 Grade 0 | 0.000 |  | 0.000 |  |
 Grade 1 | 0.976 (-1.885 – 3.838) | 0.252 | 3.642 (-0.688 – 7.951) | 0.098 |
 Grade 2 | 2.243 (-1.599 – 6.086) | 0.504 | 4.559 (-1.227 – 10.345) | 0.122 |
Age | -0.020 (-0.144 – 0.105) | 0.758 | -0.207 (-0.394 - -0.020) | 0.030* |
Gender | ||||
 Male | 0.000 |  | 0.000 |  |
 Female | 7.320 (4.391 – 10.249) | <0.001* | 5.240 (0.829 – 9.651) | 0.020* |
Body mass index (kg/m2) | 0.045 (-0.234 – 0.324) | 0.753 | -0.111 (-0.531 – 0.310) | 0.606 |
Pain radiating into legs | ||||
 No | 0.000 |  | 0.000 |  |
 Yes | 7.009 (4.191 – 9.828) | <0.001* | 12.167 (7.923 – 16.412) | <0.001* |
Regression model 4 | ||||
Intercept | 23.304 (15.086 – 31.523) | <0.001* | 48.248 (35.749 – 60.748) | <0.001* |
Presence of lumbar spondylolisthesis | ||||
 No | 0.000 |  | 0.000 |  |
 Yes | 5.670 (1.684 – 9.656) | 0.005* | 3.549 (-2.514 – 9.612) | 0.251 |
Age | -0.040 (-0.156 – 0.076) | 0.501 | -0.168 (-0.345 – 0.009) | 0.063 |
Gender | ||||
 Male | 0.000 |  | 0.000 |  |
 Female | 7.011 (4.114 – 9.908) | <0.001* | 4.824 (0.418 – 9.231) | 0.032* |
Body mass index (kg/m2) | 0.078 (-0.197 – 0.353) | 0.578 | -0.055 (-0.473 – 0.363) | 0.795 |
Pain radiating into legs | ||||
 No | 0.000 |  | 0.000 |  |
 Yes | 6.820 (4.019 – 9.621) | <0.001* | 12.128 (7.868 – 16.388) | <0.001* |