Angela Meggiolaro1, Carl Rudolf Blankart2,3, Tom Stargardt1, Jonas Schreyögg4. 1. Hamburg Center for Health Economics, Universität Hamburg, Hamburg, Germany. 2. KPM Center for Public Management, Universität Bern, Bern, Switzerland. 3. Swiss Institute for Translational and Entrepreneurial Medicine (sitem-insel), Bern, Switzerland. 4. Hamburg Center for Health Economics, Universität Hamburg, Hamburg, Germany. Jonas.Schreyoegg@uni-hamburg.de.
Abstract
OBJECTIVE: Development of an aggregate quality index to evaluate hospital performance in cardiovascular events treatment. METHODS: We applied a two-stage regression approach using an accelerated failure time model based on variance weights to estimate hospital quality over four cardiovascular interventions: elective coronary bypass graft, elective cardiac resynchronization therapy, and emergency treatment for acute myocardial infarction. Mortality and readmissions were used as outcomes. For the estimation we used data from a statutory health insurer in Germany from 2005 to 2016. RESULTS: The precision-based weights calculated in the first stage were higher for mortality than for readmissions. In general, teaching hospitals performed better in our ranking of hospital quality compared to non-teaching hospitals, as did private not-for-profit hospitals compared to hospitals with public or private for-profit ownership. DISCUSSION: The proposed approach is a new method to aggregate single hospital quality outcomes using objective, precision-based weights. Likelihood-based accelerated failure time models make use of existing data more efficiently compared to widely used models relying on dichotomized data. The main advantage of the variance-based weights approach is that the extent to which an indicator contributes to the aggregate index depends on the amount of its variance.
OBJECTIVE: Development of an aggregate quality index to evaluate hospital performance in cardiovascular events treatment. METHODS: We applied a two-stage regression approach using an accelerated failure time model based on variance weights to estimate hospital quality over four cardiovascular interventions: elective coronary bypass graft, elective cardiac resynchronization therapy, and emergency treatment for acute myocardial infarction. Mortality and readmissions were used as outcomes. For the estimation we used data from a statutory health insurer in Germany from 2005 to 2016. RESULTS: The precision-based weights calculated in the first stage were higher for mortality than for readmissions. In general, teaching hospitals performed better in our ranking of hospital quality compared to non-teaching hospitals, as did private not-for-profit hospitals compared to hospitals with public or private for-profit ownership. DISCUSSION: The proposed approach is a new method to aggregate single hospital quality outcomes using objective, precision-based weights. Likelihood-based accelerated failure time models make use of existing data more efficiently compared to widely used models relying on dichotomized data. The main advantage of the variance-based weights approach is that the extent to which an indicator contributes to the aggregate index depends on the amount of its variance.
Authors: Bradley G Hammill; Lesley H Curtis; Gregg C Fonarow; Paul A Heidenreich; Clyde W Yancy; Eric D Peterson; Adrian F Hernandez Journal: Circ Cardiovasc Qual Outcomes Date: 2010-12-07
Authors: Borja Ibánez; Stefan James; Stefan Agewall; Manuel J Antunes; Chiara Bucciarelli-Ducci; Héctor Bueno; Alida L P Caforio; Filippo Crea; John A Goudevenos; Sigrun Halvorsen; Gerhard Hindricks; Adnan Kastrati; Mattie J Lenzen; Eva Prescott; Marco Roffi; Marco Valgimigli; Christoph Varenhorst; Pascal Vranckx; Petr Widimský Journal: Rev Esp Cardiol (Engl Ed) Date: 2017-12