Number and type of patient encounter activities, Retention in Care Study, 2010–2012. Number of encounters expressed as the median number of staff encounters per patient over the 6 clinics by activity under EC-only arm. Error bars show ranges on the number of encounters per patient. FFT, face-to-face contact time; BIT, brief interim phone contact time; ARCT, appointment reminder phone contact time; MVT, missed visit contact time; CMT, case manager contact time; MTT, medical team contact time.