Test-retest reliability of a new self reported comprehensive questionnaire measuring frequencies of different modes of adolescents commuting to school and their parents commuting to work - the ATN questionnaire

Table 1 Test-retest reliability of self reported frequency of different modes of commuting to school (pupils) and work (their parents).

	Walking			Cycling			By car			By public transportation
	test	retest	p-value	test	retest	p-value	test	retest	p-value	test	retest	p-value
*Pupils*
Fall
median	2.0	2.0	0.79	6.0	6.0	0.89	0.0	0.0	0.08	0.0	0.0	0.80
mean	3.9	3.9		5.6	5.6		0.3	0.2		0.2	0.2
Winter
median	8.0	8.0	0.85	0.0	0.0	0.76	0.0	0.0	0.71	0.0	0.0	0.83
mean	6.8	6.7		1.4	1.7		1.1	1.0		0.6	0.5
Spring
median	0.0	0.0	0.67	10.0	8.0	0.32	0.0	0.0	0.47	0.0	0.0	1.00
mean	3.2	3.3		6.6	6.4		0.1	0.2		0.1	0.1
Average
median	4.0	3.3	0.85	5.3	5.3	0.63	0.0	0.0	0.58	0.0	0.0	0.91
mean	4.7	4.6		4.5	4.6		0.5	0.4		0.3	0.2
*Parents*
Fall
median	0.0	0.0	0.28	0.0	0.0	0.73	8.0	8.0	0.17	0.0	0.0	0.29
mean	0.8	0.5		1.3	1.3		6.2	6.3		0.6	0.6
Winter
median	0.0	0.0	0.59	0.0	0.0	0.79	8.0	8.0	0.23	0.0	0.0	0.13
mean	0.9	0.7		0.5	0.4		6.5	6.6		0.9	1.1
Spring
median	0.0	0.0	0.32	0.0	0.0	0.86	7.0	8.0	0.90	0.0	0.0	1.00
mean	0.7	0.4		1.7	1.7		5.8	6.1		0.7	0.6
Summer
median	0.0	0.0	0.32	0.0	0.0	0.43	6.0	6.0	0.62	0.0	0.0	0.85
mean	0.8	0.4		1.8	20		5.5	5.7		0.7	0.6
Average
median	0.0	0.0	0.42	0.0	0.0	0.55	7.0	7.0	0.26	0.0	0.0	0.40
mean	0.8	0.5		1.3	1.4		6.0	6.2		0.7	0.7

Figures are number of trips per week, p-values are based on Wilcoxon signed-rank test.

ISSN: 1479-5868