Item non-response imputation in the Korea National Health and Nutrition Examination Survey.

ABSTRACT:

Objectives

The Korea National Health and Nutrition Examination Survey (KNHANES) is a public health survey that assesses individuals' health and nutritional status and monitors the prevalence of major chronic diseases. In general, sampling weights are adjusted for unit non-responses and imputation is conducted for item non-responses. In this study, we proposed strategies for imputing item non-responses in the KNHANES in order to improve the usefulness of data, minimize bias, and increase statistical power.

Methods

After applying logical imputation, we adopted 2 separate imputation methods for each variable type: unweighted sequential hot-deck imputation for categorical variables and sequential regression imputation for continuous variables. For variance estimation, multiple i

SUBMITTER: Son S 

PROVIDER: S-EPMC10106541 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature