Table 2.
Association between disabling low back pain and independent variables from logistic regression models
| Crude | P value | Adjusted* | P value | |
| OR (95% CI) | OR (95% CI) | |||
| Frequency of shift work, per month | 1.00 (0.97 to 1.04) | 0.783 | 0.98 (0.94 to 1.02) | 0.39 |
| Sleep duration | ||||
| ≥6 hours | 1.00 | 1.00 | ||
| <6 hours | 1.04 (0.66 to 1.63) | 0.864 | 1.12 (0.68 to 1.83) | 0.659 |
| Insomnia | ||||
| Not have insomnia | 1.00 | 1.00 | ||
| Have insomnia | 2.03 (1.34 to 3.06) | <0.001 | 1.66 (1.05 to 2.62) | 0.029 |
| Previous episode of LBP | ||||
| No | 1.00 | 1.00 | ||
| Yes | 5.03 (1.81 to 13.97) | 0.002 | 4.31 (1.50 to 12.41) | 0.007 |
| TSK | ||||
| Low (≤17) | 1.00 | 1.00 | ||
| Middle (18 to 23) | 2.17 (1.19 to 3.99) | 0.012 | 2.08 (1.11 to 3.89) | 0.022 |
| High (≥24) | 5.60 (3.19 to 9.84) | <0.001 | 6.13 (3.34 to 11.27) | <0.001 |
| K6 | ||||
| <10 | 1.00 | 1.00 | ||
| ≥10 | 1.62 (1.02 to 2.55) | 0.039 | 1.06 (0.64 to 1.75) | 0.834 |
| Flexibility | ||||
| Flexible | 1.00 | 1.00 | ||
| Not flexible | 1.25 (0.81 to 1.94) | 0.314 | 0.95 (0.59 to 1.53) | 0.846 |
| Lifting | ||||
| Not frequent | 1.00 | 1.00 | ||
| Frequent | 1.31 (0.87 to 1.98) | 0.201 | 0.99 (0.62 to 1.58) | 0.973 |
*Adjusted for sex, age, body mass index and all other variables which are indicated in this table.
LBP, low back pain; TSK, Tampa Scale for Kinesiophobia.