Table 2.

Subgroup comparisons among Chinese adolescents between scores on ARBQ factors through t-test and ANOVA.

Variables	N	Unsafe crossing behaviour M (SD)	Playing on the road M (SD)	Planned protective behaviour M (SD)
Full sample	4794	1.62(.47)	1.30(.37)	3.16(.63)
Gender
male	2317	1.65(.49)	1.34(.41)	3.12(.66)
female	2469	1.59(.44)	1.27(.32)	3.20(.61)
t(4786)		4.83***	7.18***	–1.39
Age group (years)
under 11	760	1.46(.38)	1.18(.28)	3.29(.58)
11–12	2092	1.53(.43)	1.25(.34)	3.21(.67)
13–14	1560	1.76(.48)	1.40(.39)	3.07(.61)
15 and over	376	1.87(.47)	1.44(.35)	3.00(.51)
F(3,4787)		151.78***	93.01***	33.22***
Living Area
city	1503	1.57(.46)	1.22(.30)	3.35(.60)
small urban	1133	1.63(.46)	1.30(.34)	3.19(.59)
rural	2138	1.64(.47)	1.35(.41)	3.02(.65)
F(2,4758)		11.04***	72.70***	125.53***
Most common means of transportation to school
walk	1969	1.63(.47)	1.34(.40)	3.02(.64)
bicycle	990	1.69(.49)	1.35(.39)	3.19(.62)
family vehicle/motorcycle	1323	1.52(.41)	1.21(.28)	3.34(.61)
public transportation	500	1.72(.49)	1.33(.35)	3.19(.61)
F(3,4781)		37.76***	46.61***	72.42***
Family members in the home
only parents	2458	1.62(.47)	1.29(.36)	3.22(.62)
only grandparents	785	1.69(.49)	1.43(.45)	2.89(.62)
parents and grandparents	1278	1.58(.44)	1.26(.31)	3.24(.62)
others	266	1.63(.45)	1.30(.36)	3.10(.61)
F(3,4787)		8.65***	42.98***	63.59***
Traffic injury in past 6 months
no	4387	1.61(.45)	1.29(.34)	3.19(.62)
yes	407	1.79(.56)	1.49(.52)	2.86(.69)
t(4792)		–6.55***	–7.44***	9.23***

*** p < 0.001.