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Table 4 Test-Retest Reliability of the SRTS Parent Survey

From: Reliability and validity of the Safe Routes to school parent and student surveys

  n % Agreement Kappa Coefficient (95% CI)
Q3: How many children do you have in Kindergarten through 8th grade? 112 91.1 0.85 (0.72, 0.99)
Q5: How far does your child live from school? 112 72.3 0.65 (0.56, 0.74)
Q5: How far does your child live from school? 110 93.3 0.77 (0.65, 0.90) w
Q6a: On most days, how does your child arrive for school? 112 98.2 0.97 (0.83, 1.11)
Q6b: On most days, how does your child leave from school? 112 92.9 0.85 (0.72, 0.98)
Q7a: How long does it normally take your child to get to school? 112 75.9 0.67 (0.56, 0.77)
Q7a: How long does it normally take your child to get to school? 111 94.6 0.76 (0.64, 0.88) w
Q7b: How long does it normally take your child to get from school? 112 71.4 0.62 (0.52, 0.72)
Q7b: How long does it normally take your child to get from school? 108 94.3 0.76 (0.64, 0.88) w
Q8: Has your child asked you for permission to walk or bike to/from school in the past year? 112 86.6 0.74 (0.56, 0.92)
Q9: At what grade would you allow your child to walk or bike to/from school without an adult? 112 74.1 0.57 (0.48, 0.66)
Q9 alt: Would you allow your child to walk/bike at any grade? 112 87.5 0.74 (0.56, 0.92)
Q11a: My child already walks/bikes to school 112 96.4 0.76 (0.57, 0.94)
Q12: In your opinion, how much does your child's school encourage or discourage walking and biking to/from school? 112 68.8 0.47 (0.34, 0.59)
Q13: How much fun is walking or biking to/from school for your child? 112 72.3 0.61 (0.50, 0.72)
Q14: How healthy is walking or biking to/from school for your child? 112 72.3 0.51 (0.38, 0. 65)
Q15: What is the highest grade or year of school you completed? 112 96.4 0.93 (0.81, 1.04)
  1. "w" specifies "weights 1-|i-j|/(k-1), where i and j index the rows and columns of the ratings by the two raters and k is the maximum number of possible ratings" (http://www.stata.com/help.cgi?kappa#Options)
  2. Missing is coded as a valid value except for weighted kappa coefficients