Table 5.

Factors Associated with Driving at Night Multivariate Models*

Characteristic	Odds Ratios (95% Confidence Interval) (P Value)
	Model 1	Model 2	Model 3
Age (y) (per year decrease)	1.03	1.03	1.03
	(1.01–1.05)	(1.01–1.05)	(1.01–1.05)
	(P = 0.003)	(P = 0.005)	(P = 0.001)
Sex and depression   status
Females  (depression  score > 2)	1.00	1.00	1.00
Females  (depression  score ≤ 2)	1.40	1.43	1.44
	(1.06–1.86)	(1.08–1.89)	(1.09–1.90)
	(P = 0.02)	(P = 0.01)	(P = 0.01)
Males	1.87	1.89	1.94
	(1.46–2.40)	(1.48–2.41)	(1.52–2.48)
	(P < 0.001)	(P < 0.001)	(P < 0.001)
Trail Making Test, part A (per 10-s decrease)	1.06	1.06	1.06
	(1.01–1.11)	(1.01–1.11)	(1.01–1.11)
	(P = 0.05)	(P = 0.08)	(P = 0.007)
Visual Function
Visual acuity   (per line seen)	1.08	—	—
	(0.95–1.18)
	(P = 0.12)
Contrast   sensitivity   (per 3 letters   seen)	—	1.18	—
		(1.02–1.36)
		(P = 0.02)
Binocular   visual field   (per 10   points seen)	—	—	1.21
			(1.00–1.47)
			(P = 0.05)

^*Adjusted for season, miles driven, and visit period; SEs were corrected to account for the correlation of the two observations from the same subject.