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Year : 2014  |  Volume : 5  |  Issue : 3  |  Page : 115-116

Confidence interval how sure you are?

Department of Pediatrics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia

Correspondence Address:
Areej Abdul Ghani Al Fattani
Department of Pediatrics, MBC-58, King Faisal Specialist Hospital and Research Center, P.O. Box 3354, Riyadh 11211
Saudi Arabia
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1658-5127.142003

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Previously, researchers were reported P value as a basis for conclusion, but in this era of evidence-based medicine we are interested now about the precision of the results obtained that allow us to make right decisions in health care practice. The confidence interval (CI) of a parameter goes beyond the P value by also reflecting the precision of the degree to which one can estimate the true population difference. For a particular size of the difference in the population, the larger sample size, the smaller the P value and the narrower will be the CI.

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