title: The measurement of disease.
authors.forename: I S J
authors.initials: IS
authors.lastname: Merkies
authors.forename: R A C
authors.initials: RA
authors.lastname: Hughes
mesh_terms: D006801:Humans; D016015:Logistic Models; D017063:Outcome Assessment, Health Care / Q000706:statistics & numerical data*; D012720:Severity of Illness Index