Table 1.
Sample features by country.
| Country | n | Survey year | Sex (% girls) | Age (median) |
|---|---|---|---|---|
| Afghanistan | 2579 | 2014 | 57.94 | 15 |
| Algeria | 4532 | 2011 | 51.97 | 14 |
| Argentina | 28,368 | 2012 | 52.25 | 15 |
| Bangladesh | 2989 | 2014 | 60 | 14 |
| Belize | 2112 | 2011 | 52.81 | 14 |
| Benin | 2536 | 2016 | 45.73 | 16 or older |
| Bhutan | 7576 | 2016 | 54.81 | 16 or older |
| Bolivia | 3696 | 2012 | 49.31 | 14 |
| Botswana | 2197 | 2005 | 55.05 | 15 |
| Cambodia | 3806 | 2013 | 52.79 | 16 or older |
| China | 9015 | 2003 | 51.02 | 14 |
| Colombia | 9907 | 2007 | 54.72 | 14 |
| Costa Rica | 2679 | 2009 | 51.78 | 14 |
| Djibouti | 1777 | 2007 | 42.9 | 15 |
| Dominica | 1642 | 2009 | 56.41 | 14 |
| Ecuador | 5524 | 2007 | 51.43 | 13 |
| Egypt | 2568 | 2011 | 53.32 | 13 |
| El Salvador | 1915 | 2013 | 46.2 | 14 |
| Eswatini | 3680 | 2013 | 52.36 | 16 or older |
| Ghana | 3632 | 2012 | 46.24 | 16 or older |
| Grenada | 1542 | 2008 | 55.06 | 14 |
| Guatemala | 4374 | 2015 | 50.58 | 14 |
| Guyana | 2392 | 2010 | 56.22 | 14 |
| Honduras | 1779 | 2012 | 52 | 14 |
| India | 8130 | 2007 | 44.33 | 14 |
| Indonesia | 11,142 | 2015 | 54.19 | 14 |
| Iraq | 2038 | 2012 | 43.51 | 14 |
| Jamaica | 1667 | 2017 | 54.38 | 15 |
| Jordan | 2197 | 2007 | 43.8 | 15 |
| Kenya | 3691 | 2003 | 51.34 | 14 |
| Kiribati | 1582 | 2011 | 56.41 | 14 |
| Laos | 3683 | 2015 | 54.4 | 16 or older |
| Lebanon | 5708 | 2017 | 59.12 | 15 |
| Liberia | 2744 | 2017 | 47.55 | 16 or older |
| Libya | 2242 | 2007 | 57.05 | 14 |
| Malawi | 2359 | 2009 | 53.45 | 14 |
| Malaysia | 25,507 | 2012 | 49.99 | 15 |
| Maldives | 3493 | 2014 | 57.6 | 15 |
| Mauritania | 2063 | 2010 | 52.58 | 15 |
| Mauritus | 3012 | 2017 | 52.84 | 15 |
| Mongolia | 5238 | 2013 | 56.67 | 15 |
| Morocco | 6745 | 2016 | 46.93 | 15 |
| Mozambique | 1918 | 2015 | 46.67 | 16 or older |
| Myanmar | 2838 | 2016 | 53.73 | 14 |
| Namibia | 4531 | 2013 | 52.71 | 16 or older |
| Nauru | 578 | 2011 | 58.12 | 14 |
| Nepal | 6529 | 2015 | 53.04 | 14 |
| Pakistan | 5192 | 2009 | 24.83 | 14 |
| Paraguay | 3149 | 2017 | 52.45 | 15 |
| Peru | 2882 | 2010 | 51.05 | 15 |
| Philippines | 8761 | 2015 | 54.44 | 15 |
| Samoa | 2418 | 2011 | 58.65 | 14 |
| Senegal | 3154 | 2005 | 45.13 | 14 |
| Solomon Islands | 1421 | 2005 | 48.12 | 15 |
| Sri Lanka | 3262 | 2016 | 55.68 | 15 |
| Santa Lucia | 1276 | 2007 | 57.53 | 14 |
| Saint Vincent | 1333 | 2007 | 52.71 | 14 |
| Sudan | 2211 | 2012 | 61.34 | 15 |
| Suriname | 2126 | 2016 | 50.76 | 15 |
| Syria | 3102 | 2010 | 59.93 | 14 |
| Tajikistan | 9714 | 2006 | 49.95 | 15 |
| Tanzania | 3793 | 2014 | 52.06 | 14 |
| Thailand | 5894 | 2015 | 56.88 | 14 |
| Timor Leste | 3704 | 2015 | 53.6 | 16 or older |
| Tonga | 3333 | 2017 | 54.11 | 14 |
| Tunisia | 2870 | 2008 | 51.31 | 14 |
| Tuvalu | 943 | 2013 | 51.5 | 14 |
| Uganda | 3215 | 2003 | 48.6 | 15 |
| Vanuatu | 2159 | 2016 | 56.41 | 15 |
| Venezuela | 4415 | 2003 | 55.3 | 13 |
| Vietnam | 3331 | 2013 | 53.13 | 15 |
| Zambia | 2257 | 2004 | 51.14 | 15 |
| Zimbabwe | 5665 | 2003 | 55.43 | 15 |
Note. The upper bound of the age variable (i.e., 16 years or older) was collapsed to make a common metric across countries.
n = Number of participants.