Survey Statistics
RTI is a leader in survey research and survey statistics. Augmenting our extensive program in survey research with unmatched statistical science capabilities, our survey statisticians are able to consult with clients on virtually every aspect of survey design and analysis and offer solutions tailored to specific client needs.
Capabilities
- Sampling
Sampling frame construction; sample design and selection; small area estimation; rare population sampling: general population screening, list sampling, network sampling - Weighting
Estimation of survey bias; reduction of nonresponse and coverage bias - Imputation
Chi-squared automatic interaction detection for development of imputation classes; hot-deck imputation; regression imputation; predictive mean neighborhoods; logical imputation; mean value imputation - Nonsampling error analysis
Nonresponse reduction and compensation; evaluation and reduction of survey error; measurement error modeling; reduction of data processing error - Small area estimation
SAEs for large sample areas; aggregates of lower-level estimates; person-, unit-, aggregate-level predictors; geographic information mapping; Fay-Harriot SAE methodology; estimating function Gaussian likelihood (EFGL) methodology - Statistical disclosure control
MASSC; analyzing risk levels of variables; deleting identifying variables from a PUF; applying data coarsening techniques to continuous or categorical variables; data swapping by exchanging data between randomly selected individuals
Projects
-
Department of Defense Worldwide Surveys of Substance Abuse and Health-Related Behaviors Among Military Personnel. This project collects data on health behaviors such as alcohol and tobacco use, diet and weight management, stress, mental health, workplace outcomes, and illicit drug use to inform DoD health policy and programs.
-
National Inmate Survey of Sexual Assaults (NIS). The National Inmate Survey, a congressionally mandated study funded by the Bureau of Justice Statistics, is measuring the incidence and effects of sexual assault in correctional facilities and determining characteristics of victims and perpetrators. RTI is responsible for developing a touch-screen ACASI instrument, sampling about 100,000 inmates in 450 facilities, collecting data, record abstraction, data processing, data analysis, and reporting.
-
Early Childhood Longitudinal Study-Birth Cohort (ECLS-B). ECLS-B is a longitudinal study intended to provide information that will inform policy regarding young children, their families and schools, and early care and education. The primary goal is to provide a comprehensive and reliable set of data that may be used to describe and better understand children's early development; their preparation for school; key transitions during the early childhood years; children's experience in early care and education programs, kindergarten, and the primary and elementary grades; and how their early experiences relate to their later development, learning, and experiences in school.
-
National Postsecondary Student Aid Study (NPSAS). NPSAS is the only periodic, nationally representative survey of student financial aid, the fundamental purpose of which is to create a research data set for a large sample of students that brings together information about federal, state, and private aid programs, and gathers additional demographic and enrollment data to establish the appropriate context.
-
Baccalaureate and Beyond (B&B). This longitudinal study collects data from students who originally participated in NPSAS, asking questions about their job search activities, education, employment experiences after graduation, and the impact of postsecondary education on subsequent life experiences (employment, family formation, lifestyles).
-
National Study of Postsecondary Faculty (NSOPF). NSOPF provides data about faculty and instructional staff at public and private not-for-profit 2- and 4-year postsecondary institutions in the United States to postsecondary education researchers, planners, and policymakers.
-
Education Longitudinal Study: 2002 (ELS:2002). ELS:2002 is a longitudinal survey that monitors the transitions of a national sample of young people as they progress from tenth grade to, eventually, the world of work. ELS:2002 obtains information from students, school records, parents, teachers, librarians, and school administrators.
-
Occupational Information Network (O*NET). O*NET, is a comprehensive database of worker attributes and job characteristics. As the replacement for the Dictionary of Occupational Titles (DOT), O*NET is the nation's primary source of occupational information.
rti.org