Exploring the Link: Health Insurance Coverage and Historical Substance Use Patterns Among U.S. Adults—A NHANES-Based Analysis

Abstract

This study analyzed the NHANES database (2016–2018), investigating substance use patterns among 6,108 U.S. adults (18–64 years), with a focus on health insurance, race/ethnicity, age, gender, and socioeconomic status. Among participants, 1,063 reported a history of substance use. A key finding was the correlation between health insurance coverage and substance use history; notably, 80% of those with a history of substance use were insured. Non-Hispanic Whites represented a significant proportion (76%) of substance users, exceeding their population representation. Age and gender differences were prominent, with older adults (50–64 years) comprising 41% of substance users, and males accounting for 61%. The study's reliance on self-reported substance use history from NHANES may introduce measurement bias. Such bias necessitates careful interpretation of the data, considering variations across demographic and socioeconomic variables. Logistic regression analysis revealed that lacking health insurance increased the odds of a history of substance use ( OR = 1.43, p < .01). The interaction between insurance coverage and race/ethnicity was not significant. These findings underscore the multifaceted nature of substance use, highlighting the need for comprehensive public health strategies to address the diverse factors influencing substance use behaviors.