Health Services and Outcomes Research Methodology
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Erratum to: Assessing the sensitivity of treatment effect estimates to differential follow-up rates: implications for translational research
Health Services and Outcomes Research Methodology - Tập 12 - Trang 320-320 - 2012
HSOR Special Issue on Causal Inference: Introduction
Health Services and Outcomes Research Methodology - Tập 2 - Trang 165-167 - 2001
Constructing an Item Bank Using Item Response Theory: The AMC Linear Disability Score Project
Health Services and Outcomes Research Methodology - Tập 4 - Trang 19-33 - 2003
Patient relevant outcomes, such as cognitive functioning and functional status, measured using questionnaires, have become important endpoints in medical studies. Traditionally, responses to individual items are simply summed to obtain a score for each patient. Recently, there has been interest in another paradigm, item response theory (IRT), proposed as an alternative to summed scores. The benefi...... hiện toàn bộ
A Statistical Model to Detect DRG Upcoding
Health Services and Outcomes Research Methodology - Tập 1 - Trang 233-252 - 2000
The Medicare program, private insurers, and managed care organizations reimburse hospitals for inpatient admissions using the Diagnosis Related Group (DRG). The DRG is determined from a complicated algorithm based on patient medical records. Previous studies generated concerns about ‘DRG upcoding’, in which incorrect DRG codes may be selected by the hospital to obtain higher reimbursement. Insurer...... hiện toàn bộ
Incorporating respondent-driven sampling into web-based discrete choice experiments: preferences for COVID-19 mitigation measures
Health Services and Outcomes Research Methodology - Tập 22 - Trang 297-316 - 2022
To slow the spread of COVID-19, most countries implemented stay-at-home orders, social distancing, and other nonpharmaceutical mitigation strategies. To understand individual preferences for mitigation strategies, we piloted a web-based Respondent Driven Sampling (RDS) approach to recruit participants from four universities in three countries to complete a computer-based Discrete Choice Experiment...... hiện toàn bộ
Assessing geographical variations in hospital processes of care using multilevel item response models
Health Services and Outcomes Research Methodology - Tập 10 - Trang 111-133 - 2010
With health care reform passing in the United States, much effort is directed toward developing and disseminating comparative information on standardized processes of care for health care providers. We propose the use of Bayesian multilevel item response theory models to estimate hospital quality from multiple process measures and to assess geographical variation in hospital quality. Our approach ...... hiện toàn bộ
Does balancing site characteristics result in balanced population characteristics in a cluster-randomized controlled trial?
Health Services and Outcomes Research Methodology - Tập 22 - Trang 469-478 - 2022
Intervention trials with nested designs seek to balance sites randomized regarding key site characteristics. Among the goals of such site-level balancing is to accrue patient-level equivalence among treatment arms. We investigated patient-level equivalence in a cluster randomized controlled trial, which balanced study waves on site-level characteristics. The Behavioral Health Interdisciplinary Pro...... hiện toàn bộ
Using Propensity Scores to Help Design Observational Studies: Application to the Tobacco Litigation
Health Services and Outcomes Research Methodology - Tập 2 - Trang 169-188 - 2001
Propensity score methodology can be used to help design observational studies in a way analogous to the way randomized experiments are designed: without seeing any answers involving outcome variables. The typical models used to analyze observational data (e.g., least squares regressions, difference of difference methods) involve outcomes, and so cannot be used for design in this sense. Because the...... hiện toàn bộ
Estimating heterogeneous effects of a policy intervention across organizations when organization affiliation is missing for the control group: application to the evaluation of accountable care organizations
Health Services and Outcomes Research Methodology - Tập 21 Số 1 - Trang 54-68 - 2021
First introduced in early 2000s, the accountable care organization (ACO) is designed to lower health care costs while improving quality of care and has become one of the most important coordinated care technologies in the United States. In this research, we use the Medicare fee-for-service claims data from 2009–2014 to estimate the heterogeneous effects of Medicare ACO programs on hospital admissi...... hiện toàn bộ
Characterizing bias due to differential exposure ascertainment in electronic health record data
Health Services and Outcomes Research Methodology - Tập 21 - Trang 309-323 - 2021
Data derived from electronic health records (EHR) are heterogeneous with availability of specific measures dependent on the type and timing of patients’ healthcare interactions. This creates a challenge for research using EHR-derived exposures because gold-standard exposure data, determined by a definitive assessment, may only be available for a subset of the population. Alternative approaches to ...... hiện toàn bộ
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