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SDAWT is a 10-digit numeric variable with four implied decimal places. That is, values of 0012345600 should be interpreted as 1,234.56. The IPUMS command files automatically divide SDAWT by 10,000, so no further adjustment is needed.


SDAWT is a person-level weight that should be used in analyses of individual-level CPS supplement data on SDA. SDAWT is the same as WTSUPP except for in 2014. In the 2014 ASEC sample, the Census Bureau divided the sample randomly into a 3/8 group and a 5/8 group. The smaller portion of the sample was given the redesigned income questions. SDAWT uses the weight from the 5/8 group so that population counts in SDA are accurate. Please see our User Note on the 3/8 file redesign.

Researchers should use HSDAWT for household-level analyses.


This variable is comparable over time.


  • 1962-1967 (ASEC): Persons age 14+ (pre-1968 samples do not include persons under age 14).
  • 1968-2023 (selected months): All persons.


Years Jan Feb ASEC Apr May Jun Jul Aug Sep Oct Nov Dec
1962 – 2023 - - X - - - - - - - - -


This variable has no flags.

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