Design and Implementation Process in a Pilot Project to Improve a Community Health Survey Using Mixed-mode Methods

This study was performed to outline key plans for a pilot project evaluating the validity of methodological improvements in the Community Health Survey by assessing reliability of the resulting data.

A mixed-mode survey design is used to address limitations of face-to-face interviews under changing social circumstances. To validate this approach, a pilot project is conducted with approximately 8,100 participants employed at nine public health centers nationwide.

This pilot study, intended to verify data validity and field applicability of the mixed-mode survey method, will continue until December 2025. We plan to compare this pilot project's data with the results of previous Community Health surveys, identify differences between face-to-face and online surveys, and derive comparative findings across key indicators to proactively identify potential deterioration in survey data quality due to methodological changes and propose appropriate countermeasures.

The Pilot survey has been completed and the data are currently being refined. This report serves as interim documentation for design and implementation of a mixed-mode pilot project plan. Through this pilot project, we aim to establish a foundation to improve the overall survey system. The results of these analyses will be carefully reviewed and incorporated into community health surveys.