Reliable audit tools are needed to examine the potential of built environment features for physical activity.
An audit tool for alley environments was developed with land use, substrate, and use, condition, and safety items. Two audit teams independently audited 29 Los Angeles alleys, and interteam reliability was calculated with Cohen’s and prevalence-adjusted, bias-adjusted kappa (PABAK) statistics; intraclass correlation coefficients; and percent observed agreement.
Forty-two of 47 dichotomous items analyzed for reliability had PABAK values ≥ 0.61 (“substantial agreement”). Sixteen of 23 ordinal and continuous response items analyzed had ICCs ≥ 0.61, and an additional 6 with lower ICC values had observed agreement ≥ 79%. Items concerning the presence or absence of use-related alley features demonstrated the lowest reliability.
The instrument has acceptable reliability for most of its items and appears to be a promising tool for use by other researchers and professionals in the measurement of alley environments.
Seymour is with the Dept of Geography, University of Southern California, Los Angeles, CA. At the time of the study, Reynolds was with the Dept of Preventive Medicine, University of Southern California, Alhambra, CA, and is now with the School of Community and Global Health, Claremont Graduate University, San Dimas, CA. At the time of the study, Wolch was with the Dept of Geography, University of Southern California, Los Angeles, CA, and is now with the College of Environmental Design, University of California–Berkeley, Berkeley, CA.