Description
PSU is the primary sampling unit variable that represents the impact of the sample design clustering on the estimates of variance and standard errors. It is constant within a sample design period and changes between sample design periods. For analysis, researchers need to use PSU in conjunction with STRATA to account for stratification and clustering when computing variance estimates with IHIS data.
See the User Notes on variance estimation for additional information.
Universe
- 1963-2010: All households.
Codes
PSU is a 3-digit numeric variable.
Availability
- 1963-2010
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