BACKGROUND: No current consensus exists on the causal effect of gaining or losing health insurance on health care utilization and health outcomes. OBJECTIVE: To systemically search and review available evidence of estimated causal effects of health insurance on health care utilization and/or health outcomes among nonelderly adults in the United States. RESEARCH DESIGN: A systematic search of 3 electronic databases (PubMed, JSTOR, EconLit) was performed. To be included in the review, studies had to have a publication date after 1991; a population of nonelderly adults; analyses comparing an uninsured group to an appropriate control group; and 1 of 3 study designs that account for potential reverse causality and provide estimates of causal effects (longitudinal cohort, instrumental variable analysis, or quasi-experimental design). RESULTS: A total of 9701 studies, including duplicates, were primarily screened. Fourteen studies fulfilled the criteria to be included in this review-4 longitudinal cohort studies using standard regression or fixed effects analysis, 5 longitudinal cohort studies using instrumental variable regression analysis, and 5 quasi-experimental studies. CONCLUSIONS: Results of our review of empirical studies that estimate causal relationships between health insurance and health care utilization and/or health outcomes consistently show that health insurance increases utilization and improves health. Specifically, health insurance had substantial effects on the use of physician services, preventive services, self-reported health status, and mortality conditional on injury and disease. These results both confirm and contradict comparable results from the RAND Health Insurance Experiment, the gold standard on relationships between health insurance, utilization, and health.
BACKGROUND: No current consensus exists on the causal effect of gaining or losing health insurance on health care utilization and health outcomes. OBJECTIVE: To systemically search and review available evidence of estimated causal effects of health insurance on health care utilization and/or health outcomes among nonelderly adults in the United States. RESEARCH DESIGN: A systematic search of 3 electronic databases (PubMed, JSTOR, EconLit) was performed. To be included in the review, studies had to have a publication date after 1991; a population of nonelderly adults; analyses comparing an uninsured group to an appropriate control group; and 1 of 3 study designs that account for potential reverse causality and provide estimates of causal effects (longitudinal cohort, instrumental variable analysis, or quasi-experimental design). RESULTS: A total of 9701 studies, including duplicates, were primarily screened. Fourteen studies fulfilled the criteria to be included in this review-4 longitudinal cohort studies using standard regression or fixed effects analysis, 5 longitudinal cohort studies using instrumental variable regression analysis, and 5 quasi-experimental studies. CONCLUSIONS: Results of our review of empirical studies that estimate causal relationships between health insurance and health care utilization and/or health outcomes consistently show that health insurance increases utilization and improves health. Specifically, health insurance had substantial effects on the use of physician services, preventive services, self-reported health status, and mortality conditional on injury and disease. These results both confirm and contradict comparable results from the RAND Health Insurance Experiment, the gold standard on relationships between health insurance, utilization, and health.
Authors: Karen M Freund; Amy LeClair; Norma Terrin; Amresh D Hanchate; Lori Lyn Price; Alejandro Moreno-Koehler; Jill Suzukida; Sucharita Kher; Elena Byhoff; Nancy R Kressin Journal: Med Care Date: 2019-04 Impact factor: 2.983
Authors: J O Lee; R Kosterman; T M Jones; T I Herrenkohl; I C Rhew; R F Catalano; J D Hawkins Journal: Public Health Date: 2016-07-06 Impact factor: 2.427
Authors: Alok Kapoor; Tracy A Battaglia; Alexis P Isabelle; Amresh D Hanchate; Richard L Kalish; Sharon Bak; Rebecca G Mishuris; Swati M Shroff; Karen M Freund Journal: J Health Care Poor Underserved Date: 2014-02
Authors: Karen M Freund; Alexis P Isabelle; Amresh D Hanchate; Richard L Kalish; Alok Kapoor; Sharon Bak; Rebecca G Mishuris; Swati M Shroff; Tracy A Battaglia Journal: J Health Care Poor Underserved Date: 2014-02
Authors: Miguel Marino; Steffani R Bailey; Rachel Gold; Megan J Hoopes; Jean P O'Malley; Nathalie Huguet; John Heintzman; Charles Gallia; K John McConnell; Jennifer E DeVoe Journal: Am J Prev Med Date: 2015-10-23 Impact factor: 5.043