The first item missing days has code for non-applicable
If applicable, code to extended missing values (.b) all non-applicable values (coded as 8).
Create a new combined variables indicating:
No response (code 5)
TIP: you should consider that some people may not have responded to the first question, but may have responded to the second…… What is y our decision going to be? Justify your decision when coding the variable.
Identify these two variables in the dataset
Generate a numerical variable indicating the number of days missing, coding as zero (“0”) those reporting not missing any days.