Journal of Environmental and Public Health / 2013 / Article / Tab 2

Research Article

Measuring Workplace Travel Behaviour: Validity and Reliability of Survey Questions

Table 2

Spearman’s and Kappa correlations for travel mode and travel time comparing online survey retest to travel diary and initial all-staff online survey.

Travel modeTravel time
(95% CI)

Validity
  Overall0.62 (0.35–0.89)<0.00010.75<0.0001
  Monday0.77 (0.45–1.0)<0.0001
  Tuesday0.79 (0.56–1.0)<0.0001
  Wednesday0.89 (0.68–1.0)<0.0001
  Thursday0.63 (0.31–0.94)<0.0001
  Friday0.38 (−0.05–0.80)<0.007

Reliability
  Overall0.82 (0.57–1)<0.00010.83<0.0001
  Monday0.37 (−0.15–0.9)<0.004
  Tuesday0.81 (0.56–1)<0.0001
  Wednesday0.57 (0.24–0.90)<0.0001
  Thursday0.69 (0.37–1.0)<0.0001
  Friday0.79 (0.39–1.0)<0.0001

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