Figure 2.

Multivariable logistic regression: odds ratio and 95% confidential interval for items of the Epworth Sleepiness Score (ESS), the Sleep Apnea Subscale (SAS), gender, smoking history (SAS #10), and arterial hypertension (SAS #9). Dependent variable: accidents. ESS #1, sitting and reading; ESS #2, watching TV; ESS #3, sitting inactive in a public place (e.g., a theater or a meeting); ESS #4, as a passenger in a car for an hour without a break; ESS #5, lying down to rest in the afternoon when circumstances permit; ESS #6, sitting and talking to someone; ESS #7, sitting quietly after a lunch without alcohol; ESS #8, in a car, while stopped for a few minutes in traffic. SAS #1, sweat at night; SAS #2, nose blocks up while trying to sleep; SAS #3, snore that bothers others; SAS #4, snoring/breathing worse if sleeping on back; SAS #5, snoring/breathing worse with alcohol; SAS #6, stop breathing during sleep; SAS #7, suddenly wake up at night struggling for air, unable to breath.