Table 2 Headache frequency in patients with suspected obstructive sleep apnea (N = 477), percent
From: Prevalence and predictors of headache in patients referred to polysomnography
Obstructive sleep apnea | ||||
|---|---|---|---|---|
Normal | Mild | Moderate | Severe | |
AHI | <5 | 5-14 | 15-29 | ≥30 |
n | 225 | 124 | 67 | 61 |
% (95% CI) | % (95% CI) | % (95% CI) | % (95% CI) | |
No headache | 13 (9-18) | 17 (11-25) | 19 (12-30) | 23 (14-35) |
Infrequent headache | ||||
<1 day per month | 20 (16-26) | 18 (12-25) | 31 (22-43) | 20 (12-31) |
Frequent headache | ||||
1-7 days per month | 36 (30-42) | 41 (33-50) | 24 (15-35) | 26 (17-38) |
8-14 days per month | 12 (8-16) | 11 (6-17) | 9 (4-18) | 10 (5-20) |
Chronic headache | ||||
>14 days per month | 19 (15-25) | 14 (9-21) | 16 (9-27) | 21 (13-33) |