Table 2: Sleep habits, Berlin Questionnaire, and “work commute” traffic accidents according to EDS in 501 survey participants.

 

Sleep habits

All

Participants with EDS (Epworth > 10)

Participants  without EDS (Epworth ≤ 10)

p

n = 501

n = 33

 n = 468

 

Weekday (or workday) hours of sleep, mean (SD)

6.8 (1.1)

6.5 (1.2)

6.9 (1.0)

0.145

Weekday (or workday) hours of sleep < 7h, n (%)

220 (43.9)

 17 (51.5)

 203 (43.4)

0.624

Weekday (or workday) hours of sleep < 6h, n (%)

64 (12.8)

8 (24.2)

56 (12.0)

0.054

24-hr weekday sleep (night + nap sleep), mean (SD)

7.8 (1.9)

7.3 (1.8)

7.8 (1.4)

0.062

Weekend (or non-workday) hours of sleep, mean (SD)

8.1 (1.3)

8.3 (1.8)

8.1 (1.2)

0.494

Sleep debt (minutes), median (IQR)

60.0 (0.0-120.0)

90 (30-155)

60 (0-120)

0.009

Regular bedtime, n (%)

362 (72.3)

19 (57.4)

343 (73.3)

0.055

Sleep latency (min), median (IQR)

12.5 (5.0-22.5)

12.5 (7.5-30.0)

12.5 (5.0-22.5)

0.909

Napping, n (%)

127 (25.3)

17 (50.4)

110 (23.5)

0.001

 Nap duration (min), median (IQR) [n = 127]

37.5 (30.0-60.0)

35.5 (30.0-45.0)

40.0 (30.0-60.0)

0.157

Use of sleep medication, n (%)

 

 

 

 

Never (0 per month)

411 (82.0)

26 (78.8)

385 (82.3)

0.541

Rarely (once per month)

42 (8.3)

2 (6.1)

40 (8.5)

 

Sometimes (2-4 per month)

22 (4.5)

3 (9.1)

19 (4.1)

 

Often (5-15 per month)

9 (1.8)

1 (3.0)

8 (1.7)

 

Almost always (16-30 per month)

17 (3.4)

1 (3.0)

16 (3.4)

 

Risk of sleep apnea (Berlin Questionnaire)

 

 

 

 

High risk of sleep apnea

64 (12.8)

6 (18.2)

58 (12.4)

0.325

Traffic accidents

 

 

 

 

Work commute” traffic accidents, n (%)

54 (10.8)

5 (15.2)

49 (10.5)

0.385

 

Abbreviations: EDS: Excessive Daytime Sleepiness