Variables | Univariate analysis (OR [95% CI]) | Multivariate analysis© (OR [95% CI]) |
---|---|---|
Sex | Â | Â |
   Boys | Reference |  |
   Girls | 0.83 (0.65–1.07) |  |
Age (years) | Â | Â |
   9–10 | Reference | Reference |
   11–13 | 0.74 (0.57–0.95) | 0.66 (0.38 – 0.82) |
°Psychosomatic symptoms |  |  |
   Headache | 1.93 (1.48–2.54) | 1.61 (1.09–2.22) |
   Abdominal pain | 2.34 (1.72–3.05) | 1.57(1.03–2.12) |
   Depressive feelings | 2.29 (1.72–3.05) | 1.63 (1.09–2.32) |
   Difficulty falling asleep | 1.73 (1.31–2.27) |  |
   Day tiredness | 2.79 (1.37–2.49) | 2.54 (1.74–3.01) |
   Waking up during nights | 1.84 (1.37–2.49) |  |
   * Regional knee hypermobility | 0.86 (0.64–1.16) |  |
Frequency of exercise | Â | Â |
   0–2 | Reference |  |
   3–4 | 1.27 (0.95–1.70) | 1.25(0.77–1.64) |
   5–7 | 1.87 (1.31–2.67) | 1.85(1.20–2.87) |
Beighton score for hypermobility | Â | Â |
   < 6 | Reference |  |
   6–9 | 2.10 (0.86–5.05) |  |
aVo2 max | Â | Â |
   Average | Reference |  |
   Low | 0.79 (0.56–1.12) |  |
   High | 1.29 (0.93–1.77) |  |