Table 3 Relations between sleep disturbances and incident vascular events. (Men with prior myocardial infarct and/or stroke have been omitted).
| Number of men | Number of events | Adjusted* relative odds (95% CI) | |||
|---|---|---|---|---|---|
| Ischaemic strokes | IHD event | Stroke | IHD event | ||
| Insomnia | |||||
| None | 1654 | 88 | 178 | 1.00 | 1.00 |
| Frequent | 219 | 19 | 35 | 1.75 (1.02 to 3.01) | 1.47 (0.98 to 2.21) |
| Probability | 0.042 | 0.065 | |||
| Restless legs | |||||
| No | 1444 | 74 | 155 | 1.00 | 1.00 |
| Yes | 427 | 33 | 58 | 1.67 (1.07 to 2.60) | 1.24 (0.89 to 1.74) |
| Probability | 0.024 | 0.206 | |||
| Snoring | |||||
| None | 1190 | 59 | 130 | 1.00 | 1.00 |
| Frequent | 665 | 47 | 81 | 1.53 (1.01 to 2.23) | 1.13 (0.84 to 1.54) |
| Probability | 0.044 | 0.418 | |||
| Sleep apnoea | |||||
| None | 1499 | 75 | 159 | 1.00 | 1.00 |
| Frequent | 352 | 32 | 46 | 1.97 (1.26 to 3.09) | 1.21 (0.84 to 1.74) |
| Probability | 0.003 | 0.299 | |||
| Daytime sleepiness | |||||
| None | 1287 | 71 | 130 | 1.00 | 1.00 |
| Frequent | 587 | 36 | 83 | 1.20 (0.78 to 1.84) | 1.41 (1.04 to 1.92) |
| Probability | 0.396 | 0.026 | |||
*Adjusted for possible confounding by age, social class, smoking, alcohol consumption, BMI, and neck circumference. Numbers for the different symptoms differ slightly because some men did not answer all the questions.