Online Tools

Literature databases


National Library of Medicine database of biomedical literature citations from MEDLINE, life sciences journals, and online books

PubMed Central

Searchable, full-text archive of biomedical and life sciences journal literature; includes final peer-reviewed journal manuscripts that arise from NIH funds, per the NIH Public Access Policy.


U.S. Department of Education database of education-related literature, including journal articles, conferences, government documents, reports, books, and bibliographies

Google Scholar

Search the Web for peer-reviewed papers, theses, books, preprints, abstracts, and technical reports from broad areas of research.


Search the Web for journal content, scientists’ homepages, courseware, pre-print server material, patents, and institutional repository and website information.


Database of nursing and allied health journals

The Cochrane Library

A collection of seven evidence-based medicine databases


Database of biomedical journals


Database of psychology journal articles, book chapters, books, and dissertations

Science Direct

Database of science, technology and medicine journal articles and book chapters

Web of Science, Science Citation Index, and Social Science Citation Index

Databases of all cited references captured from indexed articles

Ethics in Research

The bases for human subject protection:

National Institutes of Health (NIH) Office of Extramural Research (OER), Research Involving Human Subjects

Health and Human Services (HHS) Office of Human Research Protections (OHRP)

Health and Human Services (HHS) Office of Research Integrity

HHS policies, regulations, information on research misconduct, conferences, publications, and more

U.S. Food and Drug Administration (FDA) Guidance for Institutional Review Boards and Clinical Investigators

FDA’s current thinking on protection of human subjects in research

World Health Organization (WHO) Ethical standards and procedures for research with human beings

Guidelines, regional activities, and more

Research Ethics Blog

Human Subjects Research Ethics blog

The American Journal of Bioethics blog

On Being A Scientist: Responsible Conduct In Research

eBook from the National Academies Press

Statistical Tools

Electronic Statistics Textbook

Electronic textbook providing both basic and in-depth exploration of statistical concepts

The Interactive Statistical Pages

Provides links to online books, tutorials, and software, as well as downloadable software

ASA’s Ethical Guidelines for Statistical Practice

Intended to encourage ethical and effective statistical work, and to assist students in learning to perform statistical work responsibly

Studies of Diagnosis and Screening [PDF], CPRI 2012

EBM toolbox, Centre for Evidence Based Medicine, Toronto

Oxford Centre for Evidence Based Medicine

University of British Columbia Bayesian calculator

Meta-DiSc Software, Hospital Universitario Ramon y Cajal

Optimizing Clinical Research for Evidence-Based Practitioners [PDF], CPRI 2011

Group Studies of Treatment [PDF], CPRI 2009

Exploratory Software for Confidence Intervals, Geoff Cumming, Latrobe University

Scripts and Software for Noncentral Confidence Interval and Power Calculations, Mike Smithson, Australian National University

PSY Statistical Program, School of Psychology, the University of New South Wales

Issues in Single-Subject Research [PDF], by Kevin Kearns, CPRI 2009

Evaluating Single-Subject Treatment Research: Lessons Learned from the Aphasia Literature by Pélagie M. Beeson and Randall R. Robey
Article on calculating effect sizes for single-subject designs

Simulation Modeling Analysis program on
Bootstrapping techniques for statistical significance testing for single-subject designs