Table 2

Test-Retest Reliability and Convergent Validity of the SRTS Student Travel Tally

Six Travel Modes (surveyed)

Five Travel Modes (family vehicle & carpool combined)


n

Mean % Agreement

Mean Kappa (95% CI)

n

Mean % Agreement

Mean Kappa (95% CI)


Test-Retest of Student Responses


Trip to school

542

92.8

0.86 (0.79, 0.93)

542

94.1

0.88 (0.81, 0.96)


Trip home

468

92.1

0.85 (0.78, 0.92)

468

92.9

0.86 (0.79, 0.93)


Comparison of Student and Parent Responses


Trip to school

418

86.8

0.78 (0.70, 0.85)

418

90.4

0.82 (0.74, 0.91)


Trip home

370

88.1

0.77 (0.70, 0.84)

370

91.1

0.82 (0.75, 0.90)


CI = confidence interval

McDonald et al. International Journal of Behavioral Nutrition and Physical Activity 2011 8:56   doi:10.1186/1479-5868-8-56

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