Study outcomes
DDR, dysplasia
DYSPLASIA
Maximum BE lengths were classified into different strata: 2–5 cm, 6–10 cm, ≥ 11 cm. Time to perform endoscopy for each BE length strata was determined. To assess adherence to the Seattle protocol, the number of quadrantic biopsies taken per 2 cm length of BE was calculated by dividing total number of biopsies by half the maximum length of BE; in this analysis, four biopsies/2 cm is the standard. To assess whether operator experience influenced dysplasia detection rate (DDR) and endoscopy duration, endoscopists were divided into consultant and independent trainee groups, based on their training grade. DDR and endoscopy duration were determined for the consultant and independent trainee groups, respectively. Finally, the impact of procedural time on DDR overall, and DDR by random and targeted biopsies separately, was assessed as a function of each additional minute of procedural time.