A system of data collection and analysis based on patient visits was evaluated over a four‐week period in five districts and a six‐month period in one district by twenty‐five dietitians. Each patient visit was analysed by diagnosis (the problem), by diet (the treatment) and by nutritional care level (the action). The system was seen to encourage self analysis by dietitians and proved a useful educational tool in addition to providing dietetic managers with data on clinical dietetic activity. It was considered successful and well accepted in four of the six dist