Vries, H. de

intervention respondent activity replenishment study group order intake effect product information level policy change behavior program health difference smoking baseline replenishment orders number questionnaire replenishment policy problem result fruit computer-tailored analysis vegetable erasmus university rotterdam control cafeteria vegetable intake education warehouse risk behaviors assumption worksite smoking cessation research control group feedback replenishment policies module stage cessation recommendation consumption analyses meeting model population priority brug j score worksite cafeterias intervention group product h regression emergency products increase message letter stock inventory demand table condition participant example month motivation posttest vries h risk behavior emergency demand information outcome nutrition