Joan A Casey1, Marriele Mango2, Seth Mullendore2, Mathew V Kiang3, Diana Hernández1, Bonnie H Li4, Kris Li4, Theresa M Im4, Sara Y Tartof4. 1. From the Columbia University Mailman School of Public Health, New York, NY. 2. Clean Energy Group, Montpelier, VT. 3. Department of Epidemiology and Population Health, Stanford University School of Medicine, Stanford, CA. 4. Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA.
Abstract
BACKGROUND: Duration and number of power outages have increased over time, partly fueled by climate change, putting users of electricity-dependent durable medical equipment (hereafter, "durable medical equipment") at particular risk of adverse health outcomes. Given health disparities in the United States, we assessed trends in durable medical equipment rental prevalence and individual- and area-level sociodemographic inequalities. METHODS: Using Kaiser Permanente South California electronic health record data, we identified durable medical equipment renters. We calculated annual prevalence of equipment rental and fit hierarchical generalized linear models with ZIP code random intercepts, stratified by rental of breast pumps or other equipment. RESULTS: 243,559 KPSC members rented durable medical equipment between 2008 and 2018. Rental prevalence increased over time across age, sex, racial-ethnic, and Medicaid categories, most by >100%. In adjusted analyses, Medicaid use was associated with increased prevalence and 108 (95% confidence interval [CI] = 99, 117) additional days of equipment rental during the study period. ZIP code-level sociodemographics were associated with increased prevalence of equipment rentals, for example, a 1 SD increase in percent unemployed and <high school diploma (prevalence ratio [PR] = 1.1, 95% CI = 1.1, 1.1 and PR = 1.1, 95% CI = 1.1, 1.2, respectively). Increased Supplemental Nutrition Assistance Program usage was associated with decreased breast pump rentals (PR = 0.83, 95% CI = 0.78, 0.88). CONCLUSIONS: We observed some socioeconomic disparities among a growing electricity-dependent population. Our findings are consistent with the hypothesis that reliable electricity access is increasingly required to meet the health needs of medically disadvantaged groups. See video abstract at http://links.lww.com/EDE/B793.
BACKGROUND: Duration and number of power outages have increased over time, partly fueled by climate change, putting users of electricity-dependent durable medical equipment (hereafter, "durable medical equipment") at particular risk of adverse health outcomes. Given health disparities in the United States, we assessed trends in durable medical equipment rental prevalence and individual- and area-level sociodemographic inequalities. METHODS: Using Kaiser Permanente South California electronic health record data, we identified durable medical equipment renters. We calculated annual prevalence of equipment rental and fit hierarchical generalized linear models with ZIP code random intercepts, stratified by rental of breast pumps or other equipment. RESULTS: 243,559 KPSC members rented durable medical equipment between 2008 and 2018. Rental prevalence increased over time across age, sex, racial-ethnic, and Medicaid categories, most by >100%. In adjusted analyses, Medicaid use was associated with increased prevalence and 108 (95% confidence interval [CI] = 99, 117) additional days of equipment rental during the study period. ZIP code-level sociodemographics were associated with increased prevalence of equipment rentals, for example, a 1 SD increase in percent unemployed and <high school diploma (prevalence ratio [PR] = 1.1, 95% CI = 1.1, 1.1 and PR = 1.1, 95% CI = 1.1, 1.2, respectively). Increased Supplemental Nutrition Assistance Program usage was associated with decreased breast pump rentals (PR = 0.83, 95% CI = 0.78, 0.88). CONCLUSIONS: We observed some socioeconomic disparities among a growing electricity-dependent population. Our findings are consistent with the hypothesis that reliable electricity access is increasingly required to meet the health needs of medically disadvantaged groups. See video abstract at http://links.lww.com/EDE/B793.
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