The PREDICT Field Study is a project pioneered by a collaboration of Palindrome Data with, Right to Care, Indlela, and HEERO in Mpumalanga, South Africa. The project has leveraged big data and machine learning to produce models that can successfully predict LTFU in 2 out of 3 patients. After obtaining ethical approval, we analyzed over 10 years of de-identified patient data, followed by modelling and the development of easy-to-use clinician job aids to help identify patients who have a higher risk of being LTFU. Segmenting patient risk allows clinicians to triage and tailor interventions based on individual patient attributes and predicted risk. This field study follows the PREDICT group’s initial work on designing a predictive model, field testing some initial scorecards, as well as designing a behavioral nudge for patients (which can be seen at the bottom of the scorecard).