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Source: Integrated Public Use Microdata Series-International (IPUMS) 2000-2011 for middle- and high-income countries, except where noted. DHS was used, where available, for developing nations, and is indicated with a footnote.
Note: IPUMS Data are not available for Canada, the Netherlands, or the United Kingdom because their censuses were not organized by household. Child is defined as being under 18 years old and not having a child. Adult is defined as being at least 18 years old or being a parent.
1: Source: OECD. (2011). Doing Better For Families. OECD. Children defined as under 18 years old in Japan; under 15 years in New Zealand.
2: Source: DHS 2008-2014. Child is defined as being under 18 and not having a child in the household. Adult is defined as being at least 18 years old. Children living with only one biological parent were counted as living in two parent families when their parent’s spouse lived in the household (approximated using relationships with the household head).
3: Source: Israeli Central Bureau of Statistics. (2013). Statistical Yearbook 2013.
4: Source: Statistics Canada data from the 2011 census. Foster children included with 0 parent families.
“5: Source: Australian Bureau of Statistics Monthly Population Survey. Includes only children in families. 2009-10
6: Source: Personal correspondance with Germany Federal Statistics Office. Denominator is children in families. Data reflect 2011.
7: Source: Iacovou, M., & Skew, A. J. (2011). Household composition across the new Europe: Where do the enw Member States fit in? Demographic Research 25(14), 465-490. Data is from the EU-SILC 2008-1. In this article, the authors did not report children who lived with 0 parents. Children are defined as under 18 years old. Informal relationship between a parent and a partner may be included in the 2 parent category, whereas IPUMS limits them to couples who are married or in consensual unions.
8: Source: Statistics Sweden, 2010 http://www.ssd.scb.se/databaser/makro/produkt.asp?lang=2&produktid=LE0102
9: Source: Office for National Statistics Statistical Bulletin: Families and households in the UK, 2001 to 2010. Data reflect dependent children in 2010 (aged under 16 living with at least one parent, or aged 16 to 18 in full-time education, excluding all children who have a spouse, partner or child living in the household. A small number of dependent children are excluded from the analysis on families. These include foster children and children who live in communal establishments which are not covered by the Labour Force Survey).”