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Table 5 The associations between combinations of explanatory variables and the four outcome variables (odds ratios and 95% confidence intervals). (N = 408)
| Combination of Independent variables | LBPyear | LBPlong | DD | VIP |
|---|---|---|---|---|
| Heavy smoking and hard physical work | ||||
| neither (n = 274) | 1 | 1 | 1 | 1 |
| either (n = 117) | 1.3 (0.8–2.1) | 1.2 (0.7–2.0) | 1.4 (0.9–2.2) | 2.2 (1.3–3.8)* |
| both (n = 17) | 1.6 (0.5–5.1) | 1.8 (0.6–5.1) | 1.5 (0.5–4.0) | 4.6 (1.6–13.0)* |
| Overweight and hard physical work | ||||
| neither (n = 193) | 1 | 1 | 1 | 1 |
| either (n = 171) | 1.3 (0.8–2.0) | 0.9 (0.6–1.5) | 1.6 (1.1–2.4)* | 1.3 (0.7–2.3) |
| both (n = 42) | 1.5 (0.7–3.1) | 1.2 (0.6–2.6) | 1.7 (0.9–3.4) | 2.9 (1.4–6.3) |
| Overweight and heavy smoking | ||||
| neither (n = 201) | 1 | 1 | 1 | 1 |
| either (n = 171) | 1.3 (0.9–2.1) | 1.2 (0.8–2.0) | 1.5 (1.0–2.2 | 1.4 (0.8–2.4) |
| both (n = 36) | 1.2 (0.5–2.6) | 1.5 (0.7–3.3) | 1.6 (0.8–3.3) | 1.6 (0.8–3.9) |
