Food Insecurity Status and Health Care Utilization Among COPD Patients: A Retrospective Study.

Background: Government programs-targeting chronic disease patients with high health care costs-focus on clinical conditions, factors internal to the health care system, and individual patient education, not on addressing modifiable social determinants of health to reduce health care utilization.

Objective: To evaluate differences in sociodemographic variables and health care utilization between patients with chronic obstructive pulmonary disease (COPD) who reported food insecurity and those who did not.

Methods: This descriptive retrospective cross-sectional study used data from the electronic health records of a convenience sample of 854 participants with a discharge diagnosis of COPD or COPD with acute exacerbation, admitted via the emergency department of participating hospitals in Southern California. Chi-square (or Fisher's exact) tests and t tests were used to evaluate group differences, and multivariate (or Firth) logistic regression to identify factors that increased the odds of emergency department visits and hospitalizations.

Results: Significant differences between groups were identified for food insecurity (sometimes or often vs never insecure) and age (P < .001), race (P = .022), medical insurance (P < .001), zip code (P = .022), homeless status (P < .001), smoking status (P < .001), and emergency department visits (P = .033). No significant differences were found for food insecurity and hospitalizations (P = .592).

Conclusion: This study contributes to the growing body of research supporting the association of upstream social factors (food insecurity, homelessness, zip code) and downstream health outcomes (repeated emergency room visits), and how existing programs can be effectively utilized to impact downstream health outcomes such as health care utilization.