• Am J Prev Med · Jul 2022

    Telemedicine Familiarity and Post-Disaster Utilization of Emergency and Hospital Services for Ambulatory Care Sensitive Conditions.

    • Rachel S C Friedman, Diane M Carpenter, Julia M Shaver, Shannon C McDermott, and Jackson Voelkel.
    • Kaiser Permanente Santa Rosa Family Medicine Residency, Santa Rosa, California. Electronic address: rachel.sc.friedman@kp.org.
    • Am J Prev Med. 2022 Jul 1; 63 (1): e1-e9.

    IntroductionIn this study, we examined the association between telemedicine use before a disaster and utilization of emergency or hospital services for ambulatory care sensitive conditions post-disaster.MethodsDifference-in-differences analyses were conducted in 2020‒2021 to assess pre- to post-fire changes in emergency or hospital utilization for 5 ambulatory care sensitive conditions: asthma, diabetes, hypertension, coronary artery disease, and heart failure across all Kaiser Permanente Santa Rosa patients (N=108,113) based on telemedicine utilization before the 2017 Tubbs wildfire. Inverse probability of treatment weighting was employed for cohort balancing across telemedicine familiar status.ResultsUtilization for any ambulatory care sensitive condition increased from 9.03% pre-fire to 9.45% post-fire across the full cohort. Telemedicine familiarity (ref: not familiar) was associated with decreased absolute risk in pre- to post-fire inpatient and emergency department utilization for 4 conditions: asthma (absolute risk= -1.59%, 95% CI= -2.02%, -1.16%), diabetes (absolute risk= -0.68%, 95% CI= -0.89%, -0.47%), hypertension (absolute risk= -2.07%, 95% CI= -2.44%, -1.71%), and coronary artery disease (absolute risk= -0.43%, 95% CI= -0.61%, -0.24%). Telemedicine familiarity was associated with decreased relative change in pre- to post-fire utilization for 5 conditions: asthma (RRR=0.70, 95% CI=0.64, 0.75), diabetes (RRR=0.54, 95% CI=0.47, 0.63), hypertension (RRR=0.57, 95% CI=0.52, 0.62), heart failure (RRR=0.64, 95% CI=0.50, 0.82), and coronary artery disease (RRR=0.56, 95% CI=0.47, 0.67). Similar results were seen among patients residing in evacuation zones.ConclusionsTelemedicine familiarity pre-fire was associated with decreased inpatient and emergency department utilization for certain ambulatory care sensitive conditions for 1-year post-fire. These results suggest a role for telemedicine in preventing unnecessary emergency and hospital utilization following disasters.Copyright © 2022 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

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