Mixed-effects models and tolerance limits for mycotoxin measurements in food-stock lots.

We describe mixed-effects models for aflatoxin measurements that were obtained from a set of incoming grain-delivery trucks at a pet food processing facility in Southeast Asia. Aflatoxin belongs to a group of highly toxic substances known as mycotoxins, the presence of which in food stocks is a major food safety concern around the world. The modeling objective is to evaluate the inter-truck and in...