The February 2012 issue of Health Services Research (HSR) features the first installment of a new series on research methods. The “Methods Corner” is intended to describe established methods or applications where actual research practice is often deficient, perhaps because the source articles are unknown or are difficult to access. In this first article of the series, authors Pinar Karaca-Mandic, Edward C. Norton, and AcademyHealth Methods Council Chair Bryan Dowd, explain the use of interaction terms in nonlinear models. The “Methods Corner” series is occasional, and HSR encourages readers to suggest methods and applications that might be appropriate. The journal is also providing free access to a special collection of manuscripts from the Robert Wood Johnson Foundation Clinical Scholars that examine and inform the health reform process as it unfolds. The special issue aims to address the recurring question of how to inform health policy through research. The articles cover a variety of issues in reform, including expanding the safety net of specialty care, a cross-country comparison of pharmaceutical price controls and regulation, as well as articles on physician readiness for medical home reform and a comparison of physician social networks and variation in treatment. The following AcademyHealth members had their work published this month in HSR: Introducing the Methods Corner Jose J. Escarce, Jacqueline Zinn, and Bryan Dowd Special Section: Global Health Services Research Jose Escarce An Assessment of Patient-Based and Practice Infrastructure-Based Measures of the Patient-Centered Medical Home: Do We Need to Ask the Patient? Bradley Gray and Weifeng Weng Using Fuzzy Set Qualitative Comparative Analysis (fs/QCA) to Explore the Relationship between Medical “Homeness” and Quality Leonard Gregory Pawlson and Sarah Hudson Scholle Primary Care and Health Outcomes among Older Patients with Diabetes Donald Miller Nursing Home Price and Quality Responses to Publicly Reported Quality Information Jan P. Clement, Gloria J. Bazzoli, and Mei Zhao The Effects of Safety Net Hospital Closures and Conversions on Patient Travel Distance to Hospital Services Gloria J. Bazzoli and Woolton Lee Personal Use of Complementary and Alternative Medicine (CAM) by U.S. Health Care Workers Pamela Jo Johnson Ethnic/Race Differences in the Attrition of Older American Survey Respondents: Implications for Health-Related Research Natalia Zhivan Interaction Terms in Nonlinear Models Bryan Dowd International Comparability of Patient Safety Indicators in 15 OECD Member Countries: A Methodological Approach of Adjustment by Secondary Diagnoses Patrick S. Romano, Daniel Tancredi, and Niek Klazinga European Long-Term Care Programs: Lessons for Community Living Assistance Services and Supports? Pamela Doty Building a Bridge to Somewhere Better: Linking Health Care Research and Health Policy Carolyn Clancy From Research to Health Policy Impact Carolyn M. Clancy and Sherry A. Glied Bridging the Gap Between Research and Health Policy Free Manuscripts from RWJF Clinical Scholars Expanding the Safety Net of Specialty Care for the Uninsured: A Case Study Leslie A. Curry Physician Social Networks and Variation in Prostate Cancer Treatment in Three Cities Craig Evan Pollack, Katrina Armstrong Is Patient Safety Improving? National Trends in Patient Safety Indicators: 1998-2007 Tina Hernandez-Boussard The Association of Health Insurance and Disease Impairment with Reported Asthma Prevalence in U.S. Children Tumaini R. Coker, Paul J. Chung Nonfinancial Barriers and Access to Care for U.S. Adults Jeffrey T. Kullgren, Catherine G. McLaughlin, Katrina Armstrong Physician Practices and Readiness for Medical Home Reforms: Policy, Pitfalls, and Possibilities John M. Hollingsworth, Joseph W. Sakshaug, Lingling Zhang, David C. Miller Does a Video-Interpreting Network Improve Delivery of Care in the Emergency Department? Elizabeth A. Jacobs Comparative Cost Analysis of Housing and Case Management Program for Chronically Ill Homeless Adults Compared to Usual Care Anirban Basu "Does This Doctor Speak My Language?" Improving the Characterization of Physician Non-English Language Skills Lisa C. Diamond, Harold S. Luft, Sukyung Chung, Elizabeth A. Jacobs HSR is an official journal of AcademyHealth. Members are eligible for discounted subscriptions to the journal.