3 /PCOMPUTE &all_drivers=EXPR([1 THRU 2] + [3 THRU 4])
4 /PPROPERTIES &all_drivers LABEL='All Drivers'
5 /PCOMPUTE &pct_never=EXPR([5] / ([1 THRU 2] + [3 THRU 4] + [5]) * 100)
6 /PPROPERTIES &pct_never LABEL='% Not Drivers' FORMAT=COUNT PCT40.1
8 /CATEGORIES VARIABLES=qn1 [1 THRU 2, SUBTOTAL='Frequent Drivers',
9 3 THRU 4, SUBTOTAL='Infrequent Drivers',
10 &all_drivers, 5, &pct_never,
11 MISSING, SUBTOTAL='Not Drivers or Missing'].