Table 3 Odds of experiencing headache during the past year in patients referred to a sleep study compared to general population controls
From: Prevalence and predictors of headache in patients referred to polysomnography
n | Odds ratio | 95% confidence interval | p | |
|---|---|---|---|---|
Population | ||||
General population controls | 287 | 1 | ||
Patients: normal sleep study | 222 | 3.56 | (2.20-5.76) | <0.001 |
Patients: obstructive sleep apnea | 253 | 3.51 | (2.29-5.38) | <0.001 |
Patients: sleep study without assessment of AHI | 300 | 3.33 | (2.14-5.20) | <0.001 |
Age, increase of 1 year | 1062 | 0.96 | (0.95-0.97) | <0.001 |
Gender | ||||
Male | 652 | 1 | ||
Female | 410 | 2.72 | (1.87-3.97) | <0.001 |
Education | ||||
0-9 years | 474 | 1 | ||
10-12 years | 184 | 1.06 | (0.64-1.74) | 0.825 |
>12 years | 404 | 0.69 | (0.49-0.98) | 0.040 |