Term: Confidence Interval (CI) / Confidence Limits (CL)

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Glossary Definition

Last Updated: 2011-02-22

Definition:

The Confidence Interval is an interval, calculated from data, which contains a population parameter, such as the population median or mean, with specified probability. For example, a 95% confidence interval (written as "95% CI") would have a 95% probability of containing the true population value.

The Confidence Limits are the lower and upper boundaries of a confidence interval, or the values that define the range of a confidence interval.

Related concepts 

• Confidence Interval of Median
• Statistics for Large Databases
• Variance

Related terms 

• Type I Error
• Type II Error
• Variance

References 

• Martens P, Nickel N, Forget E, Lix L, Turner D, Prior H, Walld R, Soodeen RA, Rajotte L, Ekuma O. The Cost of Smoking: A Manitoba Study. Winnipeg, MB: Manitoba Centre for Health Policy, 2015. [Report] [Summary] [Updates and Errata] [Additional Materials] (View)

Term used in 

• Brownell M, Martens PJ, Kozyrskyj A, Fergusson P, Lerfald J, Mayer T, Derksen S, Friesen D. Assessing the Health of Children in Manitoba: A Population-Based Study. Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation, 2001. [Report] [Summary] (View)
• Brownell M, Chartier M, Santos R, Ekuma O, Au W, Sarkar J, MacWilliam L, Burland E, Koseva I, Guenette W. How are Manitoba's Children Doing? Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] [Updates and Errata] [Additional Materials] (View)
• Brownell M, Lix L, Ekuma O, Derksen S, Dehaney S, Bond R, Fransoo R, MacWilliam L, Bodnarchuk J. Why is the Health Status of Some Manitobans Not Improving? The Widening Gap in the Health Status of Manitobans. Winnipeg, MB: Manitoba Centre for Health Policy, 2003. [Report] [Summary] (View)
• Bruce S, De Coster C, Trumble-Waddell J, Burchill C, De Haney S. Acuity of Patients Hospitalized for Medical Conditions at Winnipeg Acute Care Hospitals. Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation and Winnipeg Regional Health Authority, 2001. [Report] [Summary] (View)
• Chartier M, Finlayson G, Prior H, McGowan K, Chen H, de Rocquigny J, Walld R, Gousseau M. Health and Healthcare Utilization of Francophones in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (View)
• Currie RJ (1996). Summary: Alternatives to Acute Care.(View)
• De Coster C, MacWilliam L, Walld R. Waiting Times for Surgery Report: 1997/98 and 1998/99 Update. Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation, 2000. [Report] [Summary] (View)
• Doupe M, Fransoo R, Chateau D, Dik N, Burchill C, Soodeen R-A, Bozat-Emre S, Guenette W. Population Aging and the Continuum of Older Adult Care in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2011. [Report] [Summary] (View)
• Doupe M, Brownell M, Kozyrskyj A, Dik N, Burchill C, Dahl M, Chateau D, De Coster C, Hinds A, Bodnarchuk J. Using Administrative Data to Develop Indicators of Quality Care in Personal Care Homes. Winnipeg, MB: Manitoba Centre for Health Policy, 2006. [Report] [Summary] [Additional Materials] (View)
• Finlayson G, Leslie WD, MacWilliam L. Diagnostic Imaging Data in Manitoba: Assessment and Applications. Winnipeg, MB: Manitoba Centre for Health Policy, 2004. [Report] [Summary] (View)
• Fransoo R, Martens P, Prior H, Chateau D, McDougall C, Schultz J, McGowan K, Soodeen R, Bailly A. Adult Obesity in Manitoba: Prevalence, Associations, and Outcomes. Winnipeg, MB: Manitoba Centre for Health Policy, 2011. [Report] [Summary] (View)
• Fransoo R, Martens P, Burland E, The Need to Know Team, Prior H, Burchill C. Manitoba RHA Indicators Atlas 2009. Winnipeg, MB: Manitoba Centre for Health Policy, 2009. [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)
• Fransoo R, Martens P, The Need to Know Team, Prior H, Burchill C, Koseva I, Rajotte L. Who is in our Hospitals.and why? Winnipeg, MB: Manitoba Centre for Health Policy, 2013. [Report] [Summary] [Additional Materials] (View)
• Garland A, Fransoo R, Olafson K, Ramsey C, Yogendran M, Chateau D, McGowan K. The Epidemiology and Outcomes of Critical Illness in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Report] [Summary] (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)
• Katz A, Avery Kinew K, Star L, Taylor C, Koseva I, Lavoie J, Burchill C, Urquia M, Basham A, Rajotte L, Ramayanam V, Jarmasz J, Burchill S. The Health Status of and Access to Healthcare by Registered First Nation Peoples in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2019. [Report] [Summary] [Updates and Errata] [Additional Materials] (View)
• Katz A, Martens P, Chateau D, Bogdanovic B, Koseva I, McDougall C, Boriskewich E. Understanding the Health System Use of Ambulatory Care Patients. Winnipeg, MB: Manitoba Centre for Health Policy, 2013. [Report] [Summary] (View)
• Kozyrskyj A, Black C, Dunn E, Steinbach C, Chateau D. Discharge Outcomes for Long-Stay Patients in Winnipeg Acute Care Hospitals. Winnipeg, MB: Manitoba Centre for Health Policy, 2003. [Report] [Summary] (View)
• Lix L, Yogendran M, Burchill C, Metge C, McKeen N, Moore D, Bond R. Defining and Validating Chronic Diseases: An Administrative Data Approach. Winnipeg, MB: Manitoba Centre for Health Policy, 2006. [Report] [Summary] (View)
• Martens P, Fransoo R, The Need to Know Team, Burland E, Prior H, Burchill C, Romphf L, Chateau D, Bailly A, Ouelette C. What Works? A First Look at Evaluating Manitoba's Regional Health Programs and Policies at the Population Level. Winnipeg, MB: Manitoba Centre for Health Policy, 2008. [Report] [Summary] [Additional Materials] (View)
• Martens PJ, Fransoo R, McKeen N, The Need to Know Team, Burland E, Jebamani L, Burchill C, De Coster C, Ekuma O, Prior H, Chateau D, Robinson R, Metge C. Patterns of Regional Mental Illness Disorder Diagnoses and Service Use in Manitoba: A Population-Based Study. Winnipeg, MB: Manitoba Centre for Health Policy, 2004. [Report] [Summary] [Additional Materials] (View)
• Martens PJ, Bond R, Jebamani L, Burchill C, Roos NP, Derksen S, Beaulieu M, Steinbach C, MacWilliam L, Walld R, Dik N, Sanderson D, Health Information and Research Committee AoMC, Tanner-Spence M, Leader A, Elias B, O'Neil J. The Health and Health Care Use of Registered First Nations People Living in Manitoba: A Population-Based Study. Winnipeg, MB: Manitoba Centre for Health Policy, 2002. [Report] [Summary] [Additional Materials] (View)
• Menec V, Black C, Roos NP, Bogdanovic B. Defining Practice Populations for Primary Care: Methods and Issues. Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation, 2000. [Report] [Summary] (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)
• Mustard CA, Derksen S, Kozyrskyj A. A Description of the Use of Insured Health Care Services by Income Assistance Recipients in the Province of Manitoba: A Pilot Study. Recipients of Income Assistance for Mental Health Disability. Winnipeg, MB: Manitoba Centre for Health Policy and Evaluation, 2000. [Report] [Summary] (View)
• Roos NP, Mitchell L, Peterson S, Shapiro E. Perspectives on Home Care Data Requirements. Winnipeg, MB: Manitoba Centre for Health Policy, 2001. [Report] (View)