2.16 BEPAS Summarize by group

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MVPAbyWalkability <- BEPAS %>% 
  filter (!is.na(MVPA_acc) ) %>% #the filter is used to remove subject with missing cases. We calculated the number of missing values for MVPA_acc before, this number should be reported. 
  group_by(Walkability) %>%
  summarize (n=n(),
             median=median(MVPA_acc), 
             percentile25=quantile(MVPA_acc, 0.25))
MVPAbyWalkability

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