Country or region of survey
1 = Armenia
2 = Australia
3 = Austria
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 = Pakistan
26 = Poland
27 = Portugal
28 = Republic of Korea
29 = Romania
30 = Serbia / Yugoslavia
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

countreg / English region
-8 = missing
1 = North of England
2 = English Midlands
3 = East of England
4 = London and South East
5 = South & West of England
6 = Wales
7 = Scotland
8 = Northern Ireland

-9 = not possible to create
-8 = missing
1 = white
2 = black
3 = Indian/Pakistani/Bangladeshi
4 = other and mixed race