If option 1 or 2 in a18 estimate duration of the whole interview
Categories
Value
Category
0
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
18
19
20
21
22
23
24
25
27
28
29
30
31
32
33
34
35
36
37
38
40
41
42
43
45
46
47
48
49
50
51
52
53
55
57
58
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.