SSD for R A Comprehensive Statistical Package to Analyze Single-System Data

• Published in: Research on social work practice Vol. 23; no. 3; pp. 346 - 353
• Main Authors: Auerbach, Charles, Schudrich, Wendy Zeitlin
• Format: Journal Article
• Language: English
• Published: Los Angeles, CA SAGE Publications 01-05-2013; SAGE PUBLICATIONS, INC
• Subjects: Computer Software; Control charts; Correlation; Graphs; Open Source Technology; Research Design; Social research; Social Work; Statistical Analysis; Tutorials; Videotape Recordings; Videotapes; Web sites; statistical software; single-system design; SINGWIN
• ISSN: 1049-7315; 1552-7581
• DOI: 10.1177/1049731513477213

The need for statistical analysis in single-subject designs presents a challenge, as analytical methods that are applied to group comparison studies are often not appropriate in single-subject research. SSD for R is a robust set of statistical functions with wide applicability to single-subject research. It is a comprehensive package of statistical tests and produces accompanying graphs for almost every function. These include, among others, tests of autocorrelation, t-tests, effect sizes, median and celeration χ2 analyses, and control charts. All functions and graphs are described in a series of tables. Since SSD for R is open source, it is freely available and can be accessed on the authors’ website, www.ssdanalysis.com. Additional support, including video tutorials and sample data are also available at no charge.