​Summary: The California Health Interview Survey (CHIS) has consistently strived to provide accurate health and health care information about children aged 0-11 in California. However, the growing difficulties with survey data collection have prompted CHIS to consider a methodological redesign for child data collection. In 2019, CHIS replaced its historic telephone mode with a mixed-mode web and telephone design using address-based sampling. In conjunction with the general sampling and data collection redesign, CHIS implemented two new methods to specifically increase the number of child survey completes in 2019: 1) placing the child survey questions before the adult survey and 2) oversampling households with children through predictive modeling.

Findings: These changes helped CHIS achieve over 3,000 child completes in 2019 — the highest number of child completes since CHIS 2012. The innovative methods used here have promise for many other surveys looking to add or improve child survey data collection.

Read the Publication:

• Research Report: Innovative Methods to Increase Child Interviews in the California Health Interview Survey