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. 2021 Apr 21;88(3):291–316. doi: 10.1177/00243639211005121

Figure 1.

Figure 1.

Sociological variables affecting children from 1920 to 2018. The sources for the data are as follows: Children living with two parents: 1960–2000 from Michael (2005, table 5.2) and 1960–2018 from US Census Bureau (2020, CH-1); divorce rate: 1920–1970 from Michael (1988, table A-1), 1950–2000 from Michael (2005, table 5.1), and 2010 and following estimate from Feldhahn (2014); children born to unmarried women: 1950–2000 from Michael (2005, table 5.2) and Martin et al. (2019); abortion rates: all years from Johnston (2014); modern contraception usage: 1920–1974 from Michael (1988, table A-1); and Key Statistics from the National Survey of Family Growth—C Listing available at https://www.cdc.gov/nchs/nsfg/key_statistics/c.htm#everused.