Table 3 Odds ratios for scoring in the medium or high-risk STarT Back subgroups based on select explanatory variablesa
| Explanatory Variable | OR | 95% Confidence Interval | p-value |
|---|---|---|---|
| Average pain in past 2 weeks | 1.8c | (1.4, 2.3) | < 0.001 |
| Most severe pain in past 2 weeks | 1.3c | (1.0, 1.6) | 0.02 |
| Primary symptom area | |||
| Low back painb | – | – | |
| Neck pain | 1.0 | (0.5, 2.1) | 1.00 |
| Mid-back | 0.2c | (0.1, 0.7) | 0.02 |
| > 1 area of complaint | 0.4 | (0.1, 1.1) | 0.11 |
| Other | 0.3 | (0.1, 1.3) | 0.07 |
| Employment status | |||
| Full-timeb | – | – | |
| Part-time | 0.2c | (0.1, 0.5) | < 0.001 |
| Full-time student | 0.3c | (0.1, 0.7) | 0.01 |
| Unemployed | 0.0c | (0.1, 0.7) | 0.02 |
