Matches in Harvard for { ?s ?p Starting in 1985, the NHIS multi-stage probability sampling design incorporates several major changes which facilitate linkages with other National Center for Health Statistics surveys, improve precision of estimates, and reduce costs. Starting with an all-area frame, a reduced number of 198 Primary Sampling Units (PSU) were selected, including two from each non-self representing stratum. Black persons were oversampled. Four independent representative samples were drawn which may be used in any combination.. }
Showing items 1 to 1 of
1
with 100 items per page.
- catalog description "Starting in 1985, the NHIS multi-stage probability sampling design incorporates several major changes which facilitate linkages with other National Center for Health Statistics surveys, improve precision of estimates, and reduce costs. Starting with an all-area frame, a reduced number of 198 Primary Sampling Units (PSU) were selected, including two from each non-self representing stratum. Black persons were oversampled. Four independent representative samples were drawn which may be used in any combination.".