Country or region of survey - alphabetical from World 6 version
1 = Argentina
2 = Austria
3 = Australia
4 = Belgium
5 = Brazil
6 = Bulgaria
7 = Canada
8 = China
9 = Denmark
10 = Estonia
11 = Finland
12 = France
13 = Germany
14 = Hungary
15 = India
16 = Ireland
17 = Israel
18 = Italy
19 = Japan
20 = Latvia
21 = Lithuania
22 = Netherlands
23 = New Zealand
24 = Norway
25 = Peru
26 = Poland
27 = Portugal
28 = Republic of Korea
29 = Romania
30 = Russia
31 = Slovak Republic/Czechoslovakia
32 = Slovenia/Yugoslavia
33 = South Africa
34 = Spain
35 = Sweden
36 = Turkey
37 = United Kingdom
38 = USA

Household identifier
0 = 1 person sampled per household

1 = north-west
2 = north-east
3 = centre
4 = south
5 = islands