Table 2.
Occupational characteristics, sleep parameters, and work productivity of the study sample.
| Variables | Study sample (N=127) | ||
| Occupational characteristics | |||
|
|
Light vehicle, n (%) | 28 (22.2) | |
|
|
Truck, n (%) | 44 (34.9) | |
|
|
Semitrailer truck, n (%) | 2 (1.6) | |
|
|
Machinery, n (%) | 52 (41.3) | |
|
|
Seniority (years), mean (SD) | 8 (8.07) | |
|
|
Hours worked per day, mean (SD) | 8.84 (1.91) | |
|
|
Hours worked per week, mean (SD) | 49 (9.03) | |
|
|
Distance driven per day, km, mean (SD) | 148.2 (209.58) | |
|
|
Night work, n (%) | 49 (39.5) | |
|
|
Transport of hazardous materials, n (%) | 30 (23.6) | |
| Sleep disturbances, n (%) | |||
|
|
Snoring | 26 (20.6) | |
|
|
ESSa score ≥ 11 | 24 (19.4) | |
|
|
Berlin Questionnaire positive (high Risk of OSAb) | 13 (11.1) | |
|
|
Sleepiness while driving | 33 (26.8) | |
|
|
Sleep-induced near-miss vehicle accidents | 10 (7.9) | |
|
|
Sleep-induced vehicular accidents | 2 (1.6) | |
| WPAI: GH 2.0c scores, mean (SD), % | |||
|
|
Absenteeism | 1.74 (10.89) | |
|
|
Presenteeism | 12.25 (24.85) | |
|
|
Productivity loss | 12.76 (26.11) | |
|
|
Daily activity impairment | 12.76 (23.45) | |
aESS: Epworth Sleepiness Scale.
bOSA: obstructive sleep apnea.
cWPAI: GH 2.0: Work Productivity and Activity Impairment Questionnaire: General Health V2.2.