ArticleJournal of preventive medicine and public health = Yebang Uihakhoe chi2026
Primary Healthcare Utilization of Undocumented Migrants in Busan, South Korea: A Retrospective Chart Review of a Free Clinic From 2020 to 2024.
Article in Journal of preventive medicine and public health = Yebang Uihakhoe chi, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objectives: This study examined healthcare utilization patterns and health needs among undocumented migrants attending a free clinic in Busan, South Korea. Methods: We retrospectively analyzed clinical records from 750 undocumented migrants who made 2111 clinic visits between 2020 and 2024. The primary outcome was the number of clinic visits. Diagnoses were classified using the International Classification of Primary Care, Second Edition. Mixed-effects negative binomial regression, with nationality specified as a random intercept, was used to model visit counts and to assess interaction effects between gender and other variables. Results: Cardiovascular and endocrine diseases were the most prevalent conditions, with chronic diseases accounting for a substantial proportion of clinic visits. In multivariable analysis accounting for gender-based effect modification (model 2), older age was significantly associated with increased visit frequency (β=0.030; 95% confidence interval [CI], 0.014 to 0.045, p<0.001). The association between chronic disease and visit frequency differed significantly by gender (gender×chronic disease interaction, β=0.488; 95% CI, 0.053 to 0.924, p=0.028). Linear combination testing indicated that men with chronic diseases visited the clinic 1.9 times as frequently as men without chronic disease, whereas chronic disease status showed little association with visit frequency among women. Conclusions: Undocumented migrants attending the free clinic experienced a substantial burden of chronic disease, and healthcare utilization patterns differed by gender. These findings highlight the need for inclusive healthcare policies and targeted interventions for this population.
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