According to a recent survey regarding consumer use of mobile devices as health service delivery aids (mHealth):

• 38% have started using mHealth • 67% are favorable to using mHealth as a complement to in-person doctor visits • 47% are favorable to using mHealth as a substitute for in-person doctor visits Source: "Understanding Determinants of Consumer Mobile Health Usage Intentions, Assimilation, and Channel Preferences," Journal of Medical Internet Reserarch, abstract only, July 2013, http://www.jmir.org/2013/8/e149/uy