Analysis and interpretation of physical activity levels in children: a tutorial based on hierarchical or multilevel modelling

This tutorial aims at a didactical presentation of an alternative approach to analyse physical activity data of children based on hierarchical or multilevel modelling. We present the basic steps of the data analysis, interpreting all relevant output from the chosen software – HLM 6.02. Each step is duly presented and explained, going from simple hypothesis to more complex ones. Their relevancy is presented in terms of the available results.