Table 4.

Adolescent bicycling events and route choice by parent-child bicycle safety reported topics and agreement groups.

		Adolescent Naturalistic Bicycling Trip Characteristics by Parent-child bicycle safety instruction agreement groups
		Both parent and adolescent reported	Parent only reported	Adolescent only reported	Neither parent or adolescent reported	ANOVA
Bicycle Safety Instruction Topics	Related Adolescent Naturalistic Bicycling Route Characteristics and Safety- Relevant Events	Mean (SD)	Mean (SD)	Mean (SD)	Mean (SD)	F	p-value
Ride on sidewalk (off-street)	Sidewalk % of total riding time	0.7 (0.3)	0.7 (0.2)	0.6 (0.2)	0.6 (0.3)	0.74	0.54
	Street % of total riding time	0.2 (0.2)	0.1 (0.1)	0.2 (0.1)	0.3 (0.3)	0.23	0.88
	Bike facility % of total riding time	0.01 (0.04)	0 (0)	0 (0.002)	0 (0)	1.03	0.39
	Bike path % of total riding time	0.1 (0.2)	0.1 (0.2)	0.1 (0.1)	0.06 (0.09)	0.37	0.78
	Gravel % of total riding time	0 (0)	0 (0)	0 (0)	0.01 (0.02)	0.48	0.70
	Other paved/not paved % of total riding time	0.04 (0.04)	0.1 (0.1)	0.1 (0.1)	0.1 (0.1)	0.97	0.42
Bicycle handling/control-related instructions		Rate Ratio & (95% Cl)
	Reckless riding event rate per hour	0.3 (0.02-4.2)	1.8 (0.3-9.4)	n/a	ref
Crossing-related instructions	Yielded when should have stopped event rate per hour	1.8 (0.6-5.8)	0.7 (0.2-2.5)	0.7 (0.2-3.3)	ref
	Failure to stop or failure to yield event rate per hour	1.8 (0.7-4.5)	0.7 (0.2-2.0)	1.1 (0.3-3.7)	ref
Ride on the right side of street/Positioning instructions	Wrong way riding/riding opposite traffic flow event rate per hour	0.5 (0.1-3.1)	2.7 (0.8-8.4)	nc	ref

N = 35, one participant’s naturalistic data video/GPS was incomplete and could not be coded.

n/a = there were no dyads in this category of safety instructions, ref = referent group, nc = not computed because no participants in this category had any wrong way riding events.