Abstract & Overview
Missed appointments lead to substantial cost for many health systems but particularly for the national health system (NHS) in England. The costs are due to direct costs involved in arranging the appointment and the opportunity cost of missed appointments [1]. MHealth is the use of mobile and wireless devices to improve health outcomes, health care services and health research [2]. In England, since 2003, a number of pilot trials, which use mobile phone short message service (SMS) to remind patients to attend NHS appointments, have been launched [1]. In health management systems, information has a special role in planning, evaluation, training, legal aspects and research [3]. In fact, the fist distinction between developed and developing countries, are the production, application and utilization of information [4-5].