title: Patients' continuing use of an online health record: a quantitative evaluation of 14,000 patient years of access data.
abstract: BACKGROUND
  Online access to all or part of their health records is widely demanded by patients and, where provided in form of patient portals, has been substantially used by at least subgroups of patients, particularly those with chronic disease. However, little is reported regarding the longer-term patient use of patient-accessible electronic health record services, which is important in allocating resources. Renal PatientView (RPV) is an established system that gives patients with chronic kidney disease access to live test results and information about their condition and treatment. It is available in most UK renal units with up to 75% of particular patient groups registered in some centers. We have analyzed patient use out to 4 years and investigated factors associated with more persistent use.
  
  
  OBJECTIVE
  Our aim was to investigate RPV use by patients over time from initial registration in order to understand which patients choose to access RPV and the endurance of its appeal for different patient groups.
  
  
  METHODS
  We analyzed an anonymized extract of the database underlying RPV containing information on patient registration and events including patient access and the arrival of new blood test results or letters that patients might wish to view.
  
  
  RESULTS
  At the time of the extract, there were 11,352 patients registered on RPV for 0-42 months (median 17). More than half of registrants became persistent users, logging in a median of 2.0 times each month over post-registration intervals of up to 42 months (median 18.9). Provision of assistance with first logon was strongly associated with becoming a persistent user, even at 3 years. Logons by persistent users occurred around the time of consultations/tests, strongly suggestive of patient engagement. While indices indicative of greater deprivation were the strongest determinants of non-participation, they had negligible influence on drop-out rates among established users.
  
  
  CONCLUSIONS
  In this mature patient portal system, a large proportion of patients made regular use of their online health records over protracted periods. The patterns and timing of use indicate strong patient interest in detailed information such as recent test results and clinic letters. Supporting patients through the first steps of establishing access to their online records is associated with much higher rates of long-term use of RPV and likely would increase use of other electronic health records provided for patients with chronic disease.
authors.affiliation: University of Edinburgh, Renal Autoimmunity Group, Centre for Inflammation Research, Edinburgh, United Kingdom. richard.phelps@ed.ac.uk.
authors.forename: Richard G
authors.identifier: http://orcid.org/0000-0002-3061-0964
authors.initials: RG
authors.lastname: Phelps
authors.forename: Joanne
authors.identifier: http://orcid.org/0000-0001-9882-0119
authors.initials: J
authors.lastname: Taylor
authors.forename: Keith
authors.identifier: http://orcid.org/0000-0003-3214-1468
authors.initials: K
authors.lastname: Simpson
authors.forename: Jasmine
authors.identifier: http://orcid.org/0000-0002-9482-5032
authors.initials: J
authors.lastname: Samuel
authors.forename: A Neil
authors.identifier: http://orcid.org/0000-0003-4547-873X
authors.initials: AN
authors.lastname: Turner
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D057286:Electronic Health Records / Q000706:statistics & numerical data*; D005260:Female; D055991:Health Records, Personal; D006801:Humans; D007676:Kidney Failure, Chronic / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology / Q000628:therapy; D008297:Male; D016347:Medical Records Systems, Computerized / Q000706:statistics & numerical data; D008875:Middle Aged; D006113:United Kingdom / Q000453:epidemiology; D055815:Young Adult
keywords: chronic renal insufficiency; electronic health records; patient access to personal records; utilization