Association of Photopic and Mesopic Contrast Sensitivity in older drivers with risk of motor vehicle collision using naturalistic driving data

Table 3 Age-adjusted associations between impaired contrast sensitivity and rate of motor vehicle crash involvement for all crashes and for at-fault crashes

	All Crashes (N events = 354)		At-fault Crashes (N events = 307)
	Rate ratio (95% confidence interval)	P-value	Rate ratio (95% confidence interval)	P-value
Photopic contrast sensitivity parameters
AULCSF^a	0.80 (0.61–1.05)	0.102	0.77 (0.57–1.03)	0.077
Peak log sensitivity	0.80 (0.61–1.04)	0.091	0.77 (0.58–1.03)	0.072
Mesopic contrast sensitivity parameters
AULCSF^a	1.36 (1.06–1.72)	0.015	1.50 (1.16–1.93)	0.002
Peak log sensitivity	1.28 (1.01–1.63)	0.042	1.38 (1.07–1.78)	0.014

ISSN: 1471-2415