Table 4 Associations between background variables at baseline and CMP at follow-up (n = 153–154) based on logistic regression analysis
| Baseline variables | Model 1 No CMP at follow-up = 0 (n = 115) CMP at follow-up = 1 (n = 39) | Model 2 No CMP at follow-up = 0 (n = 115) CMP at follow-up = 1 (n = 38) | ||
|---|---|---|---|---|
| OR | (95% CI; p-value) | OR | (95% CI; p-value) | |
| Sex | ||||
| Boys | 1.00 | 1.00 | ||
| Girls | 1.67 | (0.74–3.76; p = 0.217) | 1.05 | (0.41–2.67; p = 0.916) |
| EQ-5D | ||||
| EQ-5D ≥ 0.85 | 1.00 | 1.00 | ||
| EQ-5D < 0.85 | 4.06 | (1.83–9.01; p = 0.001) | 2.04 | (0.77–5.36; p = 0.149) |
| Problems initiating sleep | ||||
| None to moderate | 1.00 | |||
| Severe to very severe | 3.44 | (1.24–9.54; p = 0.018) | ||
| Problems maintaining sleep | ||||
| None to moderate | 1.00 | |||
| Severe to very severe | 3.04 | (0.41–22.62; p = 0.277) | ||
| Problems with early morning awakening | ||||
| None to moderate | 1.00 | |||
| Severe to very severe | 2.69 | (0.77–9.44; p = 0.122) | ||
| Problems with non-restorative sleep | ||||
| None to moderate | 1.00 | |||
| Severe to very severe | 2.60 | (1.18–5.70; p = 0.018) | ||
| Severe sleeping problems | ||||
| No severe sleeping problems | 1.00 | 1.00 | ||
| Severe sleeping problems | 3.63 | (1.69–7.82; p = 0.001) | 2.06 | (0.84–5.07; p = 0.115) |
| Stress | ||||
| Points 1–3 | 1.00 | |||
| Points 4–5 | 1.75 | (0.76–4.02; p = 0.187) | ||
| HADS anxiety | ||||
| Non-cases | 1.00 | 1.00 | ||
| Possible cases | 4.19 | (1.74–10.11; p = 0.001) | 2.31 | (0.86–6.20; p = 0.095) |
| Probable cases | 3.82 | (1.17–12.48; p = 0.027) | 1.27 | (0.31–5.24; p = 0.740) |
| HADS depression | ||||
| Non-cases | 1.00 | |||
| Possible cases | 1.61 | (0.45–5.72; p = 0.465) | ||
| Probable cases | – | |||
| IPAQ | ||||
| Low | 1.00 | |||
| Moderate | 2.39 | (0.60–9.58; p = 0.217) | ||
| High | 1.64 | (0.42–6.41; p = 0.476) | ||
| CMP | ||||
| No CMP | 1.00 | 1.00 | ||
| CMP | 5.51 | (2.23–13.61; p < 0.001) | 2.99 | (1.09–8.24; p = 0.034) |
| Do not know or missing | 1.45 | (0.42–4.99; p = 0.556) | 0.79 | (0.18–3.49; p = 0.756) |
