Developing the New National Patient Sample and Evaluating Representations

Abstract

Background:The sampling framework of the National Patient Sample of Health Insurance Review & Assessment Service is needed to be improved due to the current demographic structure. We proposed a sampling method and additional strata for extracting the National Patient Sample data due to the current demographic structure, such as low birth rate and aged population. Methods: A total of 36 strata were set by adding four strata compared to the existing one. The maximum rate of minimal sample number was defined among the entire strata. Based on the rate, we extracted a small-scale sample dataset consisting of about 400,000 people and a large-scale sample dataset of more than 700,000 people. Results:The representativeness of the high-frequency disease and the low-frequency disease was confirmed. For health expenditure, the representativeness of samples was confirmed in large-scale samples. However, the representativeness of small-scale samples was not confirmed in five strata. Conclusion:Using the maximum rate of minimal sample number can reflect the demographic structure changes and diverse medical utilization. Although lack of representativeness in the five strata of the small-scale sample, both the small-scale sample and the large-scale sample are necessary to improve data accessibility and a sustainable data provision system. It will be helpful in establishing health policies and conducting medical research.

Association Between Migraine and Gastrointestinal Disease in Pediatric Patients: A Propensity Score Weighting Approach

“…This dataset was deemed appropriate for representing the characteristics of patients in South Korea. 24 …”

“…This dataset was deemed appropriate for representing the characteristics of patients in South Korea. 24 For this study, all pediatric patients were included in the dataset. However, patients diagnosed with GI diseases only once a year and those diagnosed with headaches other than migraine were excluded from the study.…”