TY - JOUR KW - Dapsone KW - Enzyme-Linked Immunosorbent Assay KW - Hemagglutination Tests KW - Humans KW - leprosy KW - Patient Compliance KW - Sensitivity and Specificity KW - Statistics as Topic AU - Nagelkerke N J AU - Fidler V AU - Buwalda M AB -

We explore the estimation of sensitivity and specificity of diagnostic tests when the true disease state is unknown. Instrumental variables which subdivide the patient population are used. A logistic model, relating these instrumental variables to the (unknown) true disease state is proposed. It is shown that this procedure allows the goodness-of-fit to the resulting model to be tested.

BT - Statistics in medicine C1 - http://www.ncbi.nlm.nih.gov/pubmed/3043622?dopt=Abstract DA - 1988 Jul DO - 10.1002/sim.4780070703 IS - 7 J2 - Stat Med LA - eng N2 -

We explore the estimation of sensitivity and specificity of diagnostic tests when the true disease state is unknown. Instrumental variables which subdivide the patient population are used. A logistic model, relating these instrumental variables to the (unknown) true disease state is proposed. It is shown that this procedure allows the goodness-of-fit to the resulting model to be tested.

PY - 1988 SP - 739 EP - 44 T2 - Statistics in medicine TI - Instrumental variables in the evaluation of diagnostic test procedures when the true disease state is unknown. VL - 7 SN - 0277-6715 ER -