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We examined SM patterns among a diverse cohort of patients with diabetes (N\u2009=\u200919\u00a0921) and the providers they exchanged messages with within a large, integrated health system over 10 years (2006-2015), linking patient demographics to SM use. We found a 10-fold increase in messaging volume. There were dramatic increases overall and for patient subgroups, with a majority of patients (including patients with lower income or with self-reported limited health literacy) messaging by 2015. Although more physicians than nurses and other providers messaged throughout the study, the distribution of health professions using SM changed over time. Given this rapid increase in SM, deeper understanding of optimizing the value of patient and provider engagement, while managing workflow and training challenges, is crucial.<\/jats:p>","DOI":"10.1093\/jamia\/ocaa281","type":"journal-article","created":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T04:19:04Z","timestamp":1603772344000},"page":"1252-1258","source":"Crossref","is-referenced-by-count":7,"title":["Descriptive examination of secure messaging in a longitudinal cohort of diabetes patients in the ECLIPPSE study"],"prefix":"10.1093","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1453-8963","authenticated-orcid":false,"given":"Anupama Gunshekar","family":"Cemballi","sequence":"first","affiliation":[{"name":"Division of General Internal Medicine, Zuckerberg San Francisco General Hospital, University of California, San Francisco, San Francisco, California, USA"},{"name":"Center for Vulnerable Populations, University of California, San Francisco, San 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