Abstract: A computer-implemented method of increasing appointment attendance comprises providing a processor and a non-transitory memory including computer program code for one or more programs, the memory and the computer program code configured to, with the at least one processor, perform steps comprising obtaining an appointment data structure, comprising an attendee and a corresponding appointment for the attendee, obtaining a set of population data, obtaining a set of appointment data, obtaining a set of external data, obtaining environmental data, inferring, using the population data, the appointment data, the external data, and the environmental data in a machine learning algorithm, a probability that the attendee will attend the appointment, and when the probability of attendance is below a threshold, performing a mitigation step to increase the probability that the attendee will attend the appointment.