Create a new factor variable (Walkability
) in the BEPAS dataset based on the original one (WALK
).
WALK
is a numerical variable.
The current levels are thus c(“1”, “2”). The new levels should be “Low walkability” and “High walkability”. (see slides session 2)
Use the boxplot()
function to plot BMI
and MVPA_acc
by the new variable Walkability
.