Data collection
RECRUITMENT
Baseline characteristics of GPs and patients were collected with questionnaires and recruitment lists provided during study personnel visits in the practices. PPI prescription data (agent, dose, package size, prescription date) were obtained retrospectively from the practice software in each general practice for a time span of 6 months before T0 to T2 (1.5 years). These data were collected during visits of study personnel in each practice or after instructions by phone and delivery per mail, E-mail or fax, depending on the preferences of practice personnel.Collected PPI data was analyzed according to Germany’s WIdO ATC/DDD methodology that defines medication doses typically used in the main indication in adults per day