A framework for sample size calculations in longitudinal surveys to measure net and gross changes.

ABSTRACT: In longitudinal surveys, repeated measurements are collected from the same sample units over time to measure gross change (i.e., change at the level of individual sample members). Longitudinal samples are sometimes supplemented by fresh sample to measure net change (i.e., change at the aggregate level). That is, in each measurement wave, while one part of the sample is newly recruited (fresh), another part overlaps with previously interviewed sample (repeated interviews). Many aspects of survey design of longitudinal surveys have been studied extensively, such as definition of target population, sample design, survey weighting, intervals between interviews, nonresponse, and panel attrition. Although the impact of the overlap between samples on the statistical power has been studied, sample

SUBMITTER: Elkasabi M 

PROVIDER: S-EPMC10513311 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature