Table 3 Associations between background variables at baseline and CMP at baseline (n = 221) based on logistic regression analysis
Baseline variables | Model 1 No CMP at baseline = 0 (n = 169) CMP at baseline = 1 (n = 52) | Model 2 No CMP at baseline = 0 (n = 169) CMP at baseline = 1 (n = 52) | ||
|---|---|---|---|---|
OR | (95% CI; p-value) | OR | (95% CI; p-value) | |
Sex | ||||
 Boys | 1.00 |  | 1.00 |  |
 Girls | 1.50 | (0.77–2.95; p = 0.237) | 0.86 | (0.39–1.89; p = 0.71) |
EQ-5D | ||||
 EQ-5D ≥ 0.85 | 1.00 |  | 1.00 |  |
 EQ-5D < 0.85 | 5.04 | (2.59–9.80; p < 0.001) | 3.61 | (1.76–7.41; p < 0.001) |
Problems initiating sleep | ||||
 None to moderate | 1.00 |  |  |  |
 Severe to very severe | 2.51 | (1.09–5.77; p = 0.030) |  |  |
Problems maintaining sleep | ||||
 None to moderate | 1.00 |  |  |  |
 Severe to very severe | 1.79 | (0.57–5.65; p = 0.318) |  |  |
Problems with early morning awakening | ||||
 None to moderate | 1.00 |  |  |  |
 Severe to very severe | 2.37 | (0.85–6.61; p = 0.099) |  |  |
Problems with non-restorative sleep | ||||
 None to moderate | 1.00 |  |  |  |
 Severe to very severe | 3.69 | (1.91–7.13; p < 0.001) |  |  |
Severe sleeping problems | ||||
 No severe sleeping problems | 1.00 |  | 1.00 |  |
 Severe sleeping problems | 3.06 | (1.61–5.83; p = 0.001) | 1.81 | (0.86–3.81; p = 0.121) |
Stress | ||||
 Points 1–3 | 1.00 |  | 1.00 |  |
 Points 4–5 | 2.36 | (1.17–4.75; p = 0.016) | 0.79 | (0.31–2.01; p = 0.617) |
HADS anxiety | ||||
 Non-cases | 1.00 |  | 1.00 |  |
 Possible cases | 3.42 | (1.55–7.57; p = 0.002) | 2.60 | (1.08–6.30; p = 0.034) |
 Probable cases | 6.49 | (2.63–16.02; p < 0.001) | 3.32 | (1.02–10.84; p = 0.047) |
HADS depression | ||||
 Non-cases | 1.00 |  |  |  |
 Possible cases | 2.76 | (1.09–7.01; p = 0.033) |  |  |
 Probable cases | 1.83 | (0.16–20.90; p = 0.625) |  |  |
IPAQ | ||||
 Low | 1.00 |  |  |  |
 Moderate | 0.79 | (0.27–2.33; p = 0.668) |  |  |
 High | 1.60 | (0.62–4.09; p = 0.331) |  |  |