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Ratio of men to women in CPS PUMS, ACS PUMS, and published data. Sources: Ratios are calculated from published population counts of men and women taken from ACS Table B01001 (2004–2008); ACS Table P004 (2002–2003); 2001 Supplementary Survey Table P004 (http://factfinder.census.gov); 2001–2008 ACS PUMS, IPUMS-USA (http://usa.ipums.org/usa/); 2001–2009 CPS ASEC samples, IPUMS-CPS (http://cps.ipums.org/cps/).
