Table 3.
Multivariable models for factors related to low attendance
| Model I (n = 1730) OR (95% CI) |
Model II (n = 1730) OR (95% CI) |
|
|---|---|---|
| Discrimination, AUC (95% CI) | 0.77 (0.74–0.79) | 0.76 (0.74–0.79) |
| Sex, % female | 0.94 (0.7–1.3) | |
| Age quartiles | ||
| < 50 | reference | 0.62 (0.46–0.85) |
| 50–59 | 1.60 (1.11–2.30) | a |
| 60–67 | 1.51 (1.04–2.18) | |
| 68–88 | 1.61 (1.07–2.42) | |
| Education | ||
| No qualifying training | reference | |
| Vocational education | 1.02 (0.69–1.51) | |
| Higher education (> 3 years) | 1.10 (0.83–1.47) | |
| Other | 1.08 (0.57–2.05) | |
| Work | ||
| Ordinary work, < 37 h | reference | reference |
| Ordinary work, full time | 0.92 (0.65–1.31) | 0.92 (0.66–1.30) |
| Ordinary work, > 37 h | 1.19 (0.83–1.69) | 1.22 (0.88–1.69) |
| Rehabilitation/Flex job, < 37 h | 0.79 (0.51–1.24) | 0.76 (0.49–1.17) |
| Student/trainee/other | 1.46 (0.87–2.46) | 1.46 (0.88–2.43) |
| Co-morbid pain sites | ||
| None | reference | 1.24 (0.89–1.72) |
| 1–3 | 1.67 (0.75–3.70) | a |
| 4+ | 1.45 (0.64–3.30) | |
| Co-morbid disease | ||
| None | reference | 0.61 (0.28–1.34) |
| 1–2 | 0.82 (0.58–1.15) | a |
| 3+ | 0.74 (0.49–1.11) | |
| Duration of current LBP | ||
| < 4 weeks | reference | 0.67 (0.40–1.12) |
| 4–12 weeks | 1.79 (0.97–3.28) | a |
| 3–12 months | 1.43 (0.81–2.53) | |
| > 12 months | 1.55 (0.91–2.64) | |
| LBP intensity quartile | ||
| 0–4 | reference | a |
| 4.3–6 | 1.00 (0.72–1.39) | |
| 6.5–7 | 0.99 (0.67–1.48) | |
| 7.2–10 | 1.23 (0.82–1.85) | 1.18 (0.85–1.64) |
| Leg pain present | 1.29 (0.95–1.77) | 1.26 (0.93–1.70) |
| Start Back Screening Tool | ||
| Low risk | reference | reference |
| Medium risk | 1.25 (0.88–1.80) | 1.18 (0.85–1.65) |
| High risk | 1.73 (1.12–2.69) | 1.60 (1.10–2.32) |
| Self-efficacy pain quartiles | ||
| 0–28 | reference | 1.05 (0.77–1.45) |
| 28–35 | 0.87 (0.60–1.27) | a |
| 35–41 | 0.89 (0.59–1.33) | |
| 41+ | 0.97 (0.59–1.60) | |
| Self-efficacy other symptoms | ||
| 0–32 | reference | 1.48 (1.06–2.08) |
| 32–39 | 0.57 (0.38–0.83) | a |
| 39–47 | 0.82 (0.54–1.26) | |
| 47+ | 0.52 (0.31–0.86) | |
| Illness Belief quartiles | ||
| 0–35 | reference | 1.48 (1.07–2.08) |
| 35–43 | 0.70 (0.48–1.02) | a |
| 43–51 | 0.63 (0.41–0.97) | |
| 51+ | 0.56 (0.33–0.93) | |
| Disability (ODI) | ||
| Minimal | reference | a |
| Moderate | 0.97 (0.70–1.34) | |
| Severe | 1.07 (0.64–1.81) | |
| Crippling | 1.87 (0.47–7.36) | 1.85 (0.50–6.85) |
| Extensor endurance (seconds) | ||
| 0–36 | reference | 1.29 (0.94–1.76) |
| 37–72 | 0.73 (0.50–1.05) | a |
| 73–144 | 0.78 (0.53–1.16) | |
| 145–180 | 0.87 (0.57–1.32) | |
| Abdominal endurance (seconds) | ||
| 0–25 | reference | reference |
| 26–45 | 0.88 (0.62–1.27) | 0.88 (0.62–1.25) |
| 46–75 | 1.24 (0.85–1.82) | 1.28 (0.89–1.86) |
| 76–120 | 0.81 (0.54–1.23) | 0.87 (0.59–1.29) |
| Sit-to-stand test (repetitions) | ||
| 0–10 | reference | reference |
| 10–12 | 0.91 (0.65–1.29) | 0.96 (0.68–1.34) |
| 12–14 | 0.77 (0.53–1.13) | 0.78 (0.54–1.13) |
| 14+ | 1.18 (0.82–1.69) | 1.24 (0.87–1.75) |
a Other categories of the variable combined into one reference category