A) copy dates for each vaccination from the card.
(b) record 4444 in the corresponding year column if the card shows that a vaccination was given, but no date recorded.
- diphtheria-tetanus
Categories
Value
Category
1
3
8
9
10
11
16
18
19
20
21
22
24
27
28
29
99
Missing
Sysmiss
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.