Statistical Analysis Methodology

JOURNAL ARTICLE

Ways to Improve Health Care Provider 'Report Cards' — Mar 5, 2012

As health care reform expands the use of "report cards" to grade health care providers, greater attention to reporting methods may be needed to assure the quality of such efforts.

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• News Release

REPORT

Evidence-Based Approaches to Law Enforcement Recruitment and Hiring — Aug 29, 2011

The methods employed, as well as those recommended for future studies, are applicable to any law enforcement agency interested in attracting and identifying high-quality applicants more efficiently.

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• Public Safety Research Area

JOURNAL ARTICLE

Empirical Evidence of Associations Between Trial Quality and Effect Size — Jun 1, 2011

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REPORT

Resource-Constrained Spatial Hot Spot Identification — May 11, 2011

Extends the "actionable hot spot" methodology, first developed by RAND to identify likely areas for improvised explosive device emplacement, to other problem areas where policymakers are faced with spatial, temporal, and quantity constraints when deploying scarce resources. Case studies describe its application to public health, countering piracy, and fighting neighborhood crime.

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• Science and Technology Research Area

JOURNAL ARTICLE

A Model for Teacher Effects from Longitudinal Data Without Assuming Vertical Scaling — Jan 5, 2011

We develop the "generalized persistence" (GP) model, a Bayesian multivariate model for estimating teacher effects that accommodates longitudinal data that are not vertically scaled by allowing less than perfect correlation of a teacher's effects across test administrations.

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• Education and the Arts Research Area

REPORT

Estimating Reliability and Misclassification in Physician Profiling — Sep 28, 2010

Explains the relationship between reliability measurement and misclassification for physician quality and cost measures in health care. Provides details and a practical method to calculate reliability and misclassification from the data typically available to health plans. For any newly proposed system, these methods should enable an evaluator to calculate the reliabilities and, consequently, the misclassification probabilities.

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JOURNAL ARTICLE

Bias Associated with Failing to Incorporate Dependence on Event History in Markov Models — Jan 10, 2010

Failing to incorporate dependence on prior event history in subsequent relapse risk in Markov models can bias modeling results, overestimating the impact of prevention and treatment by up to 85% or underestimating the impact by up to 20%.

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JOURNAL ARTICLE

Nonparametric Inference and Uniqueness for Periodically Observed Progressive Disease Models — Dec 31, 2009

Using a discrete time semi-Markov model, the authors develop an algorithm for nonparametric estimation of the distribution functions of sojourn times in a J state progressive disease model.

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JOURNAL ARTICLE

Sampling to Reduce Respondent Burden in Personal Network Studies and Its Effect on Estimates of Structural Measures — Dec 31, 2009

Interview time in personal network studies can be reduced by randomly sampling a smaller set of the alters named by the respondent and simulating the error that results when data are collected from the smaller group.

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REPORT

The Recalibration of the National Transport Model: PASS1 Demand Model Calibration — Dec 17, 2009

This report documents the results obtained from the re-estimation of models apportioning travel to destination area types, distance band and travel mode for an important component of the UK National Travel Model (NTM).

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• Science and Technology Research Area

REPORT

A Strategic Approach to Joint Officer Management: Analysis and Modeling Results — Jul 16, 2009

As part of a broader research effort examining officer education and development in joint matters, the authors use data analysis and complex modeling to identify billets that that provide and/or require joint experience; and determine whether there are sufficient numbers of officers with joint experience to fill such billets.

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• National Security Research Area

JOURNAL ARTICLE

Bayesian Estimation of Hispanic Fertility Hazards from Survey and Population Data — Jan 31, 2009

Previous studies have demonstrated both large gains in efficiency and reductions in bias by incorporating population information in regression estimation with sample survey data.

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• Related Report

JOURNAL ARTICLE

The Geographic Accessibility of Retail Clinics for Underserved Populations — Dec 31, 2008

The extent to which retail clinics provide access to care for underserved populations remains largely unknown. The purpose of this study was to determine whether retail clinics tend to be located in census tracts with higher medical need.

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JOURNAL ARTICLE

Use of Expert Ratings as Sampling Strata for a More Cost-Effective Probability Sample of a Rare Population — Dec 31, 2008

The authors consider situations in which externally observable characteristics allow experts to quickly categorize individual households as likely or unlikely to contain a member of a rare target population.

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JOURNAL ARTICLE

Subjective Expectations in the Context of HIV/AIDS in Malawi — Dec 31, 2008

Evaluates the feasibility and success of a new interactive elicitation methodology for collecting probabilistic expectations in a developing country context with low levels of literacy and numeracy,

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JOURNAL ARTICLE

Subjective Prior Distributions for Modeling Longitudinal Continuous Outcomes with Non-Ignorable Dropout — Dec 31, 2008

Substance abuse treatment research is complicated by the pervasive problem of non-ignorable missing data-i.e. the occurrence of the missing data is related to the unobserved outcomes. Missing data frequently arise due to early client departure from treatment. Pattern-mixture models (PMMs) are often employed in such situations to jointly model the outcome and the missing data mechanism.

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JOURNAL ARTICLE

The Geographic Distribution, Ownership, Prices, and Scope of Practice at Retail Clinics — Dec 31, 2008

Cross-sectional descriptive study describes characteristics of retail clinics, including their location, scope of practice, prices, acceptance of insurance, and ownership, and to estimate the proportion of the U.S. population that lives within a short driving distance of such a clinic.

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• News Release

JOURNAL ARTICLE

Surveying a Nationally Representative Internet-Based Panel to Obtain Timely Estimates of Influenza Vaccination Rates — Dec 31, 2008

The authors studied the feasibility of using an internet-based panel survey to obtain timely and accurate population-based data on influenza vaccination.

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JOURNAL ARTICLE

Empirical Models of Discrete Choice and Belief Updating in Observational Learning Experiments — Dec 31, 2008

Contrary to previous conclusions, the authors find that respondents do not tend to overweight private information when updating beliefs.

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JOURNAL ARTICLE

Using the Census Bureau's Surname List to Improve Estimates of Race/ethnicity and Associated Disparities — Dec 31, 2008

Commercial health plans need member racial/ethnic information to address disparities, but often lack it. We incorporate the U.S. Census Bureaugass latest surname list into a previous Bayesian method that integrates surname and geocoded information to better impute self-reported race/ethnicity.

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