Table 1. Countries in the study, sample year and sample size.
| Country | Year | n |
|---|---|---|
| Albania | 2000 | 6683 |
| Angola | 2001 | 16535 |
| Azerbaijan | 2000 | 9732 |
| Bangladesh | 2006 | 127250 |
| Armenia | 2000 | 8300 |
| Bolivia | 2004 | 37856 |
| Bosnia and Herzegovina | 2000 | 9486 |
| Brazil | 1996 | 22732 |
| Burundi | 2005 | 22799 |
| Cambodia | 2006 | 33463 |
| Cameroon | 2006 | 21303 |
| Chad | 2000 | 16209 |
| Colombia | 2005 | 60392 |
| Congo BR | 2005 | 14526 |
| Congo, DR | 2007 | 25219 |
| Benin | 2001 | 16215 |
| Dominican Republic | 2002 | 47253 |
| Ethiopia | 1992 | 34439 |
| Gabon | 2000 | 15687 |
| Gambia | 2000 | 14191 |
| Ghana | 2006 | 12742 |
| Guatemala | 1999 | 16239 |
| Guinea | 1999 | 18745 |
| Guyana | 2001 | 8733 |
| Haiti | 2000 | 22983 |
| India | 2006 | 198294 |
| Indonesia | 2003 | 56726 |
| Iraq | 2000 | 50775 |
| Jamaica | 2005 | 5813 |
| Jordan | 1997 | 22114 |
| Kenya | 2003 | 18779 |
| Kyrgyzstan | 2006 | 10015 |
| Laos | 2006 | 16263 |
| Lesotho | 2000 | 14352 |
| Madagascar | 2004 | 36625 |
| Malawi | 2006 | 71425 |
| Mali | 2006 | 40095 |
| Mongolia | 2000 | 11576 |
| Morocco | 2004 | 24439 |
| Mozambique | 1997 | 23245 |
| Namibia | 2000 | 15031 |
| Nepal | 2006 | 19935 |
| Nicaragua | 2001 | 29673 |
| Niger | 2006 | 27180 |
| Nigeria | 2007 | 63188 |
| Pakistan | 2007 | 32994 |
| Peru | 2004 | 11040 |
| Philippines | 2003 | 26768 |
| Rwanda | 2000 | 24911 |
| Senegal | 2005 | 35446 |
| Sierra Leone | 2006 | 21022 |
| Vietnam | 2006 | 12736 |
| South Africa | 1998 | 24019 |
| Zimbabwe | 2006 | 21218 |
| Sudan | 2000 | 81451 |
| Suriname | 2000 | 6603 |
| Swaziland | 2000 | 12557 |
| Tajikistan | 2000 | 12711 |
| Thailand | 2006 | 38954 |
| Uganda | 2001 | 21448 |
| Ukraine | 2005 | 5830 |
| Egypt | 2005 | 45155 |
| Tanzania | 2005 | 25022 |
| Burkina Faso | 2003 | 32831 |
| Uzbekistan | 2006 | 19906 |
| Yemen | 2006 | 13637 |
| Zambia | 2002 | 20220 |