Bad bad science

This 'study' is meant to show how cost effective diabetic nurse specialists are, however even by just glancing at the details of the 'research' one can see several rather gaping holes in the logic used:"The DSNs managed to identify and review 111 people with diabetes, of which 47 (42%) were discharged within 24 hours.The average hospital stay for a person with diabetes is normally 11 days,