According to a recent survey, 76% of the patients who were asked by a doctor ...

... use wearables to track their health, such as fitness or vital signs, followed their physician’s recommendation.

Source: "Consumers’ Use of Health Apps and Wearables Doubled in Past Two Years, Accenture Survey Finds," Accenture Press Release, March 3, 2016, https://newsroom.accenture.com/news/consumers-use-of-health-apps-and-wearables-doubled-in-past-two-years-accenture-survey-finds.htm