Regression Analysis

Contents:

All Items (21)

Report

Are U.S. Military Interventions Contagious over Time? Intervention Timing and Its Implications for Force Planning — May 17, 2013

This report challenges the assumption that the timing of deployments and their distribution over time are serially independent, arguing that military interventions occur in temporal clusters driven by the number of interventions in the recent past.

Journal Article

Nonparametric Bayesian Multiple Imputation for Missing Data Due to Mid-Study Switching of Measurement Methods — Jul 1, 2012

Investigators often change how variables are measured during the middle of data-collection, for example, in hopes of obtaining greater accuracy or reducing costs.

Journal Article

Bias and Variance Trade-Offs When Combining Propensity Score Weighting and Regression: With an Application to HIV Status and Homeless Men — Jun 1, 2012

There is a bias-variance tradeoff at work in propensity score estimation; every step toward better balance usually means an increase in variance and at some point a marginal decrease in bias may not be worth the associated increase in variance.

Journal Article

Development of a Prognostic Model for Six-Month Mortality in Older Adults with Declining Health — Mar 1, 2012

This study seeks to develop a new prognostic model, the Patient-Reported Outcome Mortality Prediction Tool (PROMPT), for six-month mortality in community-dwelling elderly patients.

Journal Article

Medical Expenditure Risk and Household Portfolio Choice — Jan 1, 2012

Ownership of risky assets rises as the risk of medical expenditure decreases. Medigap or employer supplemental insurance increases risky asset holding by about 7 percentage points. Belonging to a Medicare HMO increases risky asset holding by 13 percentage points.

Journal Article

Hypothesized, Directly-Coded Curve Shapes in Growth Curve Analysis: An Example — Jan 1, 2012

This article presents a step-by-step example of the use and testing of hypothesized curve shapes in the estimation of growth curves using hierarchical linear modeling for a small intervention study.

Journal Article

Examining Moderated Effects of Additional Adolescent Substance Use Treatment: Structural Nested Mean Model Estimation Using Inverse-Weighted Regression with Residuals — Jan 1, 2012

This article considers the problem of examining causal effect moderation using observational, longitudinal data in which treatment, candidate moderators, and putative confounders are time-varying.

Journal Article

Evaluating the Gifted Program of an Urban School District Using a Modified Regression Discontinuity Design — Sep 1, 2010

This paper examines the impact of a gifted program on retention in an urban school district using a regression discontinuity design.

Journal Article

Estimating Conditional Proportion Curves by Regression Residuals — Jun 1, 2010

We propose a fully nonparametric empirical estimator using the standardized regression residuals from the general location-scale model y=m(x) + v(x)e for the original continuous measurement.

Journal Article

Power of Tests for a Dichotomous Independent Variable Measured with Error — Jan 1, 2008

Examines implications for statistical power of using predicted probabilities for a dichotomous variable rather than the actual variable. Information loss from not observing actual values can be large. Direct substitution is easy and efficient.

Journal Article

A Simple Identification Proof for a Mixture of Two Univariate Normal Distributions — Jan 1, 2008

A simple proof of the identification of a mixture of two univariate normal distributions is given.

Journal Article

Population Constraints on Pooled Surveys in Demographic Hazard Modeling — Jan 1, 2008

In non-experimental research, data on the same population process may be collected simultaneously by more than one instrument.

Journal Article

Medicare Capitation Model, Functional Status, and Multiple Comorbidities: Model Accuracy — Jan 1, 2008

Examines financial implications of the Centers for Medicare & Medicaid Services Hierarchical Condition Categories risk-adjustment model on Medicare payments for individuals with comorbid chronic conditions. Some payments were underpredicted.

Journal Article

The Sample Selection Model from a Method of Moments Perspective — Jan 1, 2007

It is shown how the usual two-step estimator for the standard sample selection model can be seen as a method of moments estimator.

Journal Article

Imputation of SF-12 Health Scores for Respondents with Partially Missing Data — Jan 1, 2005

Missing SF-12 items are prevalent and lead to reduced analytical power.

Journal Article

Improving Care for Minorities: Can Quality Improvement Interventions Improve Care and Outcomes for Depressed Minorities? Results of a Randomized, Controlled Trial — Jan 1, 2003

Quality improvement programs appear to improve quality of care without increasing disparities, and may offer an approach to reduce health disparities.

Report

Effect of the Variable Reenlistment Bonus on Reenlistment Rates: Empirical Results for FY 1971 — Jan 1, 1975

A preliminary study affirming that the VRB is an effective policy tool for increasing first-term reenlistment rates.

Journal Article

The Analysts' Bookshelf: Publications of The RAND Corporation — Jan 1, 1956

The general nature of the RAND Corporations unclassified operations research output and to point out where it can be examined.

People

James R. Broyles

Associate Operations Researcher; Professor, Pardee RAND Graduate School
Ph.D. in industrial engineering, Arizona State University; B.S. in industrial engineering, Arizona State University

People

Eileen Hlavka

Assistant Policy Analyst
M.Phil. (Ph.D. candidate) in policy analysis, Pardee RAND Graduate School; B.A. in mathematics/political science, Reed College

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Researcher Spotlight

Eileen Hlavka

Assistant Policy Analyst

Eileen Hlavka

Eileen Hlavka is an assistant policy analyst at RAND and a Ph.D. student at the Pardee RAND Graduate School. Her career focus is climate change policy, and through her work and Ph.D. studies she strives to learn a variety of mostly quantitative research methods, in the belief that different…

James R. Broyles

Associate Operations Researcher

James R. Broyles

James R. Broyles is an associate operations researcher with a background in stochastic modeling and applied statistics; he is also a professor at the Pardee RAND Graduate School. His research interests include modeling of military logistic networks and health systems. Broyles has conducted…

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