Proportion of schools (by grade) with increase, decrease, or no change in total physical activity time by at least 5 minutes per day from 1<sup>st</sup> to 2<sup>nd</sup> wave of data collection.
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资源简介：
Proportion of schools (by grade) with increase, decrease, or no change in total physical activity time by at least 5 minutes per day from 1st to 2nd wave of data collection.
创建时间：
2020-02-06
