The study looked at patient outcomes from virtual care and remote automated monitoring (RAM) — video calls with nurses and doctors, and self-monitoring of vital signs using wearable devices. Half of 905 post-surgery patients at nine sites in Hamilton, Kingston, London, Ottawa and Edmonton in Canada were randomized to use technology at home — a cellular tablet and RAM equipment to measure their heart rate, blood pressure, oxygen saturation, respiration rate, body temperature and weight — for 30 days after they left the hospital.