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Dr. Ronaldo Iachan
Senior Methodologist/Statistician Consultant

Ronaldo Iachan, PhD, is a senior statistician and fellow at ICF focused primarily on issues of health behavior, environmental, and social statistics. Ronaldo has 40 years of experience in statistical design and analysis, with more than 50 refereed articles published in statistical methods, particularly in the areas of survey sampling design and analysis. He was a professor of statistics at the University of Wisconsin and at IowaState University, and served in the ICF Institutional Review Board (IRB) for nearly 20 years.Ronaldo has been the lead statistician on dozens of national and state surveys such as the Centers for Disease Control and Prevention’s (CDC’s) Youth Risk Behavior Survey (YRBS), the National Youth Tobacco Survey (NYTS), and the School Health Policies and Practices Study (SHPPS). Also for CDC, he has designed and weighted several cycles of the Medical Monitoring Project and National HIIV Behavior Surveillance. For the National Cancer Institute, he is leading the technical assistance in design, weighting, and analysis tasks for dozens of cancer grantees.

Ronaldo has conducted cross-national analyses of data from the Health Behavior in School-aged Children (HBSC) survey on topics ranging from depression to youth violence. He is the statistical lead in a project for the National Center for Health Statistics focusing on non-response analysis and weighting for the National Health Interview Survey (NHIS). For the Behavioral Risk Factor Surveillance System (BRFSS), he has recently developed methods for national weights, and models for small area estimation and for rare populations. Ronaldo has led the statistical tasks in national and state dual frame RDD telephone surveys, and the 2016 review of the National Survey of Children’s Health (NSCH) for the Health Research and Services Administration (HRSA). Ronaldo obtained his master’s and doctorate degrees from the University of California, Berkeley.

Insights by Dr. Ronaldo Iachan