Table 5 Headache frequency in relation to levels of anxiety and depressive symptoms and behavioral problems among adolescents aged 15–17 years
|  | Headache < monthly | Headache monthly | Headache weekly or daily | |||
|---|---|---|---|---|---|---|
(yes = 181, no = 2029) | (yes = 431, no = 2029) | (yes = 239, no = 2029) | ||||
OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | |
Step 1 | Â | Â | Â | Â | Â | Â |
  Symptoms of anxiety and depression | 1.08 (0.79-1.50) | ns | 1.94 (1.60-2.35) | <0.001 | 2.22 (1.75-2.80) | <0.001 |
Step 2 | Â | Â | Â | Â | Â | Â |
  Symptoms of anxiety and depression | 1.03 (0.73-1.44) | ns | 1.70 (1.38-2.09) | <0.001 | 1.91 (1.49-2.47) | <0.001 |
  Attention difficulties | 1.14 (0.89-1.46) | ns | 1.36 (1.15-1.61) | <0.001 | 1.41 (1.13-1.76) | 0.002 |
Step 3 | Â | Â | Â | Â | Â | Â |
  Symptoms of anxiety and depression | 1.02 (0.73-1.43) | ns | 1.68 (1.37-2.07) | <0.001 | 1.90 (1.47-2.45) | <0.001 |
  Attention difficulties | 1.09 (0.84-1.42) | ns | 1.31 (1.10-1.57) | 0.003 | 1.34 (1.06-1.70) | 0.015 |
  Conduct difficulties | 1.22 (0.80-1.87) | ns | 1.23 (0.92-1.65) | ns | 1.27 (0.86-1.88) | ns |