Table 6.
Presenting odds ratios (OR) and 95% confidence intervals (95% CI) for CWP 18 years later. Model A includes age, gender, mental health, socio economy and number of sleep problems
| Model A | Model A + fatigue | Model A + number of pain regions | Model A + number of pain regions and fatigue | |
|---|---|---|---|---|
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| No of sleep problems | ||||
| 0 | 1 | 1 | 1 | 1 |
| 1 | 1.82 (1.00–3.34) | 1.73 (0.93–3.20) | 1.57 (0.84–2.95) | 1.57 (0.83–2.96) |
| 2 | 1.38 (0.65–2.91) | 1.27 (0.59–2.71) | 1.03 (0.48–2.22) | 1.02 (0.47–2.23) |
| 3 | 2.44 (1.19–5.00)* | 2.17 (1.03–4.56)* | 1.78 (0.84–3.80) | 1.75 (0.81–3.82) |
| 4 | 3.95 (1.90–8.20)** | 3.33 (1.55–7.13)** | 2.36 (1.06–5.23)* | 2.29 (1.01–5.18)* |
| Fatiguea | ||||
| Low | 1 | 1 | ||
| Intermediate | 0.96 (0.51–1.79) | 0.89 (0.47–1.67) | ||
| High | 1.79 (0.89–3.60) | 1.13 (0.54–2.37) | ||
| Pain regions at baseline | ||||
| 0 | 1 | 1 | ||
| 1–2 | 2.83 (1.57–5.12)** | 2.76 (1.52–5.02)** | ||
| 3–5 | 4.03 (2.20–7.37)** | 3.84 (2.05–7.20)** | ||
| > 6 | 8.63 (3.05–24.43)** | 8.24 (2.88–23.63)** | ||
| Mental healthb | ||||
| Good | 1 | 1 | 1 | 1 |
| Intermediate | 1.22 (0.67–2.25) | 1.15 (0.61–2.18) | 1.21 (0.65–2.24) | 1.21 (0.63–2.31) |
| Poor | 1.75 (0.92–3.13) | 1.25 (0.59–2.66) | 1.36 (0.70–2.63) | 1.27 (0.59–2.72) |
| Socio economy (work)c | ||||
| High non-manual | 1 | 1 | 1 | 1 |
| Ass non-manual | 1.22 (0.61–2.47) | 1.25 (0.62–2.54) | 1.21 (0.58–2.49) | 1.22 (0.59–2.53) |
| Manual | 1.49 (0.90–2.48) | 1.50 (0.90–2.51) | 1.40 (0.83–2.38) | 1.41 (0.83–2.38) |
| other | 1.24 (0.56–2.77) | 1.26 (0.56–2.83) | 1.29 (0.56–3.00) | 1.31 (0.56–3.04) |
aBased on scorings on SF-36 vitality scale [Low = 85–100; Intermediate = 70–84; High = 0–69]
bBased on scorings on SF-36 Mental Health scale [Good = 93–100; Intermediate = 84–92; Poor = 0–83]; cClassified by occupation – intermediate/higher non-manual employees, Assistant non-manual employees, Manual workers and “others”
*p < 0.05; **p < 0.01