. Author manuscript; available in PMC: 2014 Feb 13.

Published in final edited form as: Proc Int Driv Symp Hum Factors Driv Assess Train Veh Des. 2013:135–141. doi: 10.17077/drivingassessment.1479

Table 3.

Descriptive statistics on coded dimensions in each clip type pre-pap for OSA and controls

	Ignition M (SD)	Baseline M (SD)	Trigger M (SD)	p-value for clip type main effect
Driver safety and state
Safety errors	.04(.04)	.01 (.03)	.91 (.18)	<.001
Distraction	.58 (.28)	.51 (.46)	.35 (.27)	<.001
Driving related gaze movements	.65 (.13)	.38 (.22)	.71 (.24)	<.001
Non-driving related gaze movement	.50 (.17)	.44 (.24)	.46 (.26)	.098
Sleepiness	4.57 (7.11)	7.82 (10.1)	4.79 (7.15)	.003
Exposure
Road culture
Highway	.06 (.08)	.43 (.30)	.17 (.24)	<.001
Intersection	.44 (.11)	.23 (.23)	.79 (.25)	<.001
Rural	.04 (.09)	.03 (.07)	.03 (.10)	ns
City	.39 (.15)	.31 (.26)	.72 (.26)	<.001
Weather
Visibility	.06 (.08)	.07 (.16)	.05 (.09)	ns
Dark	.26 (.20)	.29 (.27)	.18 (.20)	.004
Precipitation (rain, snow)	.06 (.08)	.06 (.16)	.04 (.08)	ns
Slippery (wet/ icy/ snowy) roadway	.21 (.25)	.17 (.23)	.15 (.21)	ns