Patient Use of Electronic Prescription Refill and Secure Messaging and Its Association With Undetectable HIV Viral Load: A Retrospective Cohort Study

D Keith McInnes   ^{1, 2} , MSc, ScD ;   Stephanie L Shimada   ^{1, 2, 3} , PhD ;   Amanda M Midboe   ⁴ , PhD ;   Kim M Nazi   ⁵ , PhD ;   Shibei Zhao   ¹ , MPH ;   Justina Wu   ⁴ , MPH ;   Casey M Garvey   ⁶ , RN, BSN ;   Thomas K Houston   ^{1, 3} , MD, MPH

¹ Center for Healthcare Organization and Implementation Research, Edith Nourse Rogers Memorial Veterans Hospital, Bedford, MA, United States

² Department of Health Law, Policy, and Management, Boston University School of Public Health, Boston, MA, United States

³ Division of Health Informatics and Implementation Science, Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, MA, United States

⁴ Center for Innovation to Implementation, VA Palo Alto Health Care System, Palo Alto, CA, United States

⁵ Veterans and Consumers Health Informatics Office, Office of Connected Care, Veterans Health Administration, Washington, DC, United States

⁶ School of Nursing, Bouve College of Health Sciences, Northeastern University, Boston, MA, United States