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

longitudinal study wave marker
0 = not longitudinal study/case
1 = Wave 1
2 = Wave 2
3 = Wave 3
4 = Wave 4

multiple samples in study
0 = 1 sample
1 = Szalai USA 65 sample
2 = national USA 65 sample
3 = USA 1998-99
4 = USA 2000-01
5 = Slovenia in Szalai Yugoslavia
6 = Serbia in Szalai Yugoslavia
7 = UK 1983/84 autumn, winter
8 = UK 1987 July
9 = East Germany
10 = West Germany

Household identifier
0 = 1 person sampled per household

district and sub-district of residence
11 = Jerusalem
21 = Northern - Zefat
22 = Northern - Kinneret
23 = Northern - Yizre el-Afula
24 = Northern - Akko
25 = Northern - Yizre el-Nazareth
31 = Haifa
32 = Haifa - Hadera
41 = Central - Sharon
42 = Central - Petah Tiqwa
43 = Central - Ramla
44 = Central - Rehovot
51 = Tel Aviv
52 = Tel Aviv - Ramat Gan
53 = Tel Aviv - Holon
61 = Southern - Ashqelon
62 = Southern - Be er Sheva
73 = other

1 = Jewish
2 = Arab/Other