The weekend effect refers to higher rates of adverse outcomes experienced by patients admitted on the weekends. Researchers sought to determine whether adoption of clinical standards for emergency hospital care put forth by the National Health Service in England is associated with the degree to which weekend mortality is increased. Using data from 123 Trusts, they found no association between adoption of these clinical standards and the extent of the weekend effect. This finding suggests that adoption of these standards is unlikely to reduce mortality among patients admitted to the emergency department on the weekend.