Mailed Letter Versus Phone Call to Increase Diabetic-Related Retinopathy Screening Engagement by Patients in a Team-Based Primary Care Practice: Prospective, Single-Masked, Randomized Trial

Vess Stamenova   ¹ , PhD ;   Megan Nguyen   ¹ , MN ;   Nike Onabajo   ¹ , MSc ;   Rebecca Merritt   ² , BA ;   Olivera Sutakovic   ³ , MD ;   Kathryn Mossman   ¹ , PhD ;   Ivy Wong   ¹ , MPA, MPAff ;   Lori Ives-Baine   ⁴ , RN, BScN, MN ;   R Sacha Bhatia   ¹ , MBA, MD ;   Michael H Brent   ^{3, 5} , MD ;   Onil Bhattacharyya   ^{1, 6} , MD, PhD

¹ Institute for Health System Solutions and Virtual Care, Women's College Hospital, Toronto, ON, Canada

² South Riverdale Community Health Centre, Toronto, ON, Canada

³ Donald K Johnson Eye Institute, University Health Network, Toronto, ON, Canada

⁴ Hospital for Sick Children, Toronto, ON, Canada

⁵ Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, ON, Canada

⁶ Department of Family & Community Medicine, University of Toronto, Toronto, ON, Canada