Term: Type I Error

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Glossary Definition

Last Updated: 2012-11-05

Definition:

A statistical error that produces a false positive result, whereby the test statistic predicts incorrectly a significant difference or correlation between groups. The likelihood of Type I errors can be reduced by using more conservative alpha level (thresholds of significance), such as 0.01 rather than 0.05. (Meyers LS et al., 2006).

Related concepts 

• Variance

Related terms 

• Bonferroni Method
• Confidence Interval (CI) / Confidence Limits (CL)
• Null Hypothesis
• Type II Error

References 

• Meyers LS, Gamst G, Guarino AJ. Applied Multivariate Research: Design and Interpretation. Thousand Oaks, CA: Sage Publications Inc; 2006.(View)

Term used in 

• Doupe M, Kozyrskyj A, Soodeen R, Derksen S, Burchill C, Huq S. An Initial Analysis of Emergency Departments and Urgent Care in Winnipeg. Winnipeg, MB: Manitoba Centre for Health Policy, 2008. [Report] [Summary] [Additional Materials] (View)
• Fransoo R, Martens P, The Need to Know Team, Burland E, Prior H, Burchill C, Chateau D, Walld R. Sex Differences in Health Status, Health Care Use, and Quality of Care: A Population-Based Analysis for Manitoba's Regional Health Authorities. Winnipeg, MB: Manitoba Centre for Health Policy, 2005. [Report] [Summary] [Additional Materials] (View)
• Fransoo R, Martens P, The Need to Know Team, Prior H, Burchill C, Koseva I, Bailly A, Allegro E. The 2013 RHA Indicators Atlas. Winnipeg, MB: Manitoba Centre for Health Policy, 2013. [Report] [Summary] [Additional Materials] (View)
• Heaman M, Kingston D, Helewa M, Brownell M, Derksen S, Bogdanovic B, McGowan K, Bailly A. Perinatal Services and Outcomes in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] [Updates and Errata] (View)
• Metge C, Chateau D, Prior H, Soodeen R, De Coster C, Barre L. Composite Measures/Indices of Health and Health System Performance. Winnipeg, MB: Manitoba Centre for Health Policy, 2009. [Report] [Summary] (View)
• Roos NP, Shapiro E. Monitoring the Winnipeg Hospital System: The First Report. 1990-1992 . Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation, 1994. [Report] [Summary] (View)