background drop-out (discontinuing treatment after the first visit) is one of the main causes of failure in obesity treatment. the aim of this study was to investigate the pattern of drop-out in overweight or obese outpatients in ahvaz, iran. material and methods a total of 575 overweight or obese individuals (female: 469, male: 106) aged 18 – 65 attending an outpatient dietician office for the...