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Research Reports |
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We want to thank Goodgold for her thoughtful and clinically relevant comments about our study. Our research team appreciates her acknowledgment of the ecological validity of monitoring ambulatory activity with a monitor such as the StepWatch. We believe that activities of "performance," or what a child really does, will be quite helpful in discerning the impact of activity interventions. Goodgold accurately noted large interquartile ranges for the median variable scores displayed in Figures 2 through 5, with much overlap of data between Gross Motor Function Classification System (GMFCS) levels. These observations raise questions regarding the normal distribution of the data and the true population values for each functional level.
In regard to the normal distribution of the raw data, the kurtosis statistic
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