Table 2.

Responses and Test–Retest Reliability of Measures Among the Reliability Sample (N = 54)

	Time 1		Time 2
Survey item	n	%a	n	%a	Kappa coefficients (95% CI)	Percent agreement
(2)b How did you get to school today?					.96 (.90–1.00)	98.1
bus	26	48	24	45
car or truck	27	50	28	53
walked	1	2	1	2
bike, skateboard, scooter, Rollerblade, other	0	0	0	0
missing	3		0
(3) Whom did you travel with? (Mark all that apply.)c
no one, I was by myself	0	0	0	0
mother or father	26	48	27	50	.96 (.89–1.00)	98.1
brother or sister	12	22	10	19	.89 (.73–1.00)	96.3
other relative	1	2	0	0	—d	98.1
other student(s)	25	46	23	43	.93 (.82–1.00)	96.3
other	8	15	9	17	.79 (.56–1.00)	94.4
(4) Where will you go directly after school today?					.88 (.72–1.00)	96.2
home	44	82	42	79
after-school program at school	1	2	2	4
relative’s house	1	2	0	0
friend’s house	5	9	1	2
YMCA/YWCA or boys and girls club	2	4	4	8
sports practice or lessons	1	2	3	6
other	0	0	1	2
(5) How will you get there? (if previous answer was not home)					1.00	100.0
bus	1	9	0	0
car or truck	6	55	7	64
walk	4	36	4	36
bike, skateboard, scooter, Rollerblade, other	0	0	0	0
(6) Whom will you travel with? (Mark all that apply.)c
no one, I will be by myself	1	2	2	4	—	98.1
mother or father	11	20	13	24	.79 (.59–.99)	92.6
brother or sister	10	19	11	20	.94 (.83–1.00)	98.1
other relative	2	4	0	0	—	96.3
other student(s)	39	72	36	67	.87 (.73–1.00)	94.4
other	9	17	7	13	.85 (.66–1.00)	96.3
(7) When you go home, how will you get there?					.96 (.89–1.00)	98.1
bus	33	62	32	60
car or truck	16	30	17	32
walk	4	8	4	8
bike, skateboard, scooter, Rollerblade, other	0	0	0	0
missing	1		0
Number of walk or bike trips that day					1.00	100.0
none	49	91	49	91
1 or 2	5	9	5	9

^aPercents may not add to 100% because of rounding.

^bThe survey item numbers correspond to the survey questions in the Appendix.

^cThirty-nine reported 1 answer, 12 reported 2 answers, and 3 reported 3 answers.

^d— indicates cells too small to calculate kappa.