Table 3.

Adjusted multivariate logistic regression on high-risk of fatigued driving.

High-Risk Fatigue	Odds Ratio	95% Confidence Interval	p-Value
Personal factors
Age
<35 years	Ref
35–44 years	0.778	0.311–1.949	0.592
45–54 years	0.532	0.222–1.274	0.157
>55 years	0.551	0.225–1.352	0.193
Family status
No partner with no dependent children	Ref
No partner with dependent children	0.140	0.039– 0.495	0.002
Partner with no dependent children	0.674	0.260–1.746	0.416
Partner with dependent children	0.336	0.131–0.860	0.023
Occupational factors
Working hours
<41 h	Ref
41–60 h	2.960	1.256–6.974	0.013
>60 h	2.412	0.971–5.990	0.058
Work task
Low-risk	Ref
Moderate-risk	1.970	1.044–3.717	0.036
High-risk	1.457	0.614–3.456	0.394
Work time and schedule
Low-risk	Ref
High-risk	1.290	0.726–2.296	0.385
Environmental factors
Work environment
Low-risk	Ref
High-risk	1.432	0.729–2.813	0.297
Workplace violence
No	Ref
Yes	0.746	0.400–1.389	0.355
Regulatory factors
Breaking rules and regulations
No	Ref
Yes	2.11	1.172–3.799	0.013
Fatigue management
No fatigue management	Ref
Basic/advanced fatigue management	0.884	0.498–1.571	0.675
Lifestyle factors and health risks
Diet
Does not meet the guidelines	Ref
Meets the guidelines	0.871	0.491–1.547	0.638
Exercise
Does not meet the guidelines	Ref
Meets the guidelines	0.654	0.366–1.168	0.151
Smoking
Non-smokers	Ref
Smokers	1.607	0.794–3.250	0.187
Sleep
Low-risk	Ref
High-risk	6.990	2.255–21.665	0.001
Pain
No	Ref
Yes	1.629	0.908–2.921	0.102
Loneliness
No	Ref
Yes	2.155	1.164–3.990	0.015

Ref = reference. Bold values denote statistical significance at the p < 0.05 level.