Gain Lee, Yuna Park, Jeongseob Kim, Gi-Hyoug Cho
Association between intersection characteristics and perceived crash risk among school-aged children
Accident; analysis and prevention
provide framework implementation multicomponent schoolbased nutrition interventions article describes research methods shaping healthy choices program model improve nutrition healthrelated knowledge behaviors among schoolaged children longitudinal pretestposttest randomized controlled intervention four elementary schools california fourthgrade students intervention n 252 control n 238 schools parents teachers power analyses demonstrate minimum 159 students per group needed achieve sufficient power sample size determined using variables nutrition knowledge vegetable preference score body mass index percentile multicomponent schoolbased nutrition education intervention 1 academic year followed activities support sustainability program dietary nutrition knowledge behavior critical thinking skills healthy food preferences consumption physical activity measured using nutrition knowledge questionnaire food frequency questionnaire vegetable preferences assessment tool test basic science process skills digital photography plate waste polaractive accelerometers anthropometrics parent questionnaire school community actions nutrition survey evaluation include quantitative qualitative measures quantitative data use paired chisquare mannwhitney u tests regression modeling using p 05 determine statistical significance