JSCM.Figure2

Table 2. Correlates of drowsy driving and witnessed apnea

Question	Significance (i.e. p-value)
	Drowsy Driving	Witnessed Apneas
Overall Berin Score	< 0.0001	< 0.0001
Do you snore?	< 0.01	< 0.001
How loud is your snoring?	< 0.0001	< 0.0001
Does your snoring bother other people?	< 0.01	< 0.01
How often do you snore?	< 0.0001	< 0.0001
How often has someone noticed that you quit breathing during your sleep?	< 0.0001	n/a†
How often do you feel tired or fatigued after your sleep?	< 0.0001	< 0.0001
During your waking time, how often do you feel fatigued, or not up to par?	< 0.0001	< 0.0001