Yep—this is a good sketch of a randomized control trial to measure the primary outcome, change in diagnosis rate.
Secondary outcomes you might look at are overall change in medical spend, e.g., is this intervention cost-saving, or at least cost-effective? And change in treatment, which may be independent of diagnosis rate.
The tweak I'd make is that you don't need to give out Apple Watches, Garmins, Fitbits, or Android Wear watches. People are buying these devices on their own already. Given ubiquity of hardware, continuous screening may be achievable at close to zero marginal cost.
Secondary outcomes you might look at are overall change in medical spend, e.g., is this intervention cost-saving, or at least cost-effective? And change in treatment, which may be independent of diagnosis rate.
The tweak I'd make is that you don't need to give out Apple Watches, Garmins, Fitbits, or Android Wear watches. People are buying these devices on their own already. Given ubiquity of hardware, continuous screening may be achievable at close to zero marginal cost.