Posts Tagged ‘ Confidence Interval ’

Confidence Intervals for Difference Between Independent Binomial Proportions: A SAS 9.4/STAT 12.3 Update

August 26, 2013
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Confidence Intervals for Difference Between Independent Binomial Proportions: A SAS 9.4/STAT 12.3 Update

For the computing of confidence intervals for difference between two independent binomial proportions in SAS 9.4/STAT 12.3, it’s hard to figure out exactly how many methods are available because there is no “CL=ALL” trigger in RISKDIFF option (but you can get one in BIONOMIAL option to compute the confidence intervals for binomial proportion). As...
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Confidence Intervals for Binomial Proportion: A SAS 9.4/STAT 12.3 Update

August 22, 2013
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Confidence Intervals for Binomial Proportion: A SAS 9.4/STAT 12.3 Update

After getting the access to SAS 9.4 alone with SAS/STAT 12.3, I first took a look at my favorite SAS statistical procedure, PROF FREQ.  Last year I had a note on confidence intervals for binomial proportion based on SAS 9.2/SAS9.3. Now it’s time to throw out some updates. 1. A new confidence limits method...
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Statistical Notes (5): Confidence Intervals for Difference Between Independent Binomial Proportions Using SAS

September 24, 2012
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Statistical Notes (5): Confidence Intervals for Difference Between Independent Binomial Proportions Using SAS

A guy notices a bunch of targets scattered over a barn wall, and in the center of each, in the "bulls-eye," is a bullet hole. "Wow," he says to the farmer, "that’s pretty good shooting. How’d you do it?" "Oh," says the farmer, "it was easy. I painted the targets after I shot the...
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New Book on Confidence Intervals for Proportions by Prof. Newcombe

September 22, 2012
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New Book on Confidence Intervals for Proportions by Prof. Newcombe

Check it out: a new book on confidence intervals for proportions by Prof. Robert G. Newcombe  just recently available from CRC Press: Confidence Intervals for Proportions and Related Measures of Effect Size This book also supplies a set of Excel spreadsheets to calculating CIs, see http://www.crcpress.com/product/isbn/9781439812785 Other users may be interested on a SAS...
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Statistical Notes (3): Confidence Intervals for Binomial Proportion Using SAS

September 15, 2012
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Statistical Notes (3): Confidence Intervals for Binomial Proportion Using SAS

A guy notices a bunch of targets scattered over a barn wall, and in the center of each, in the "bulls-eye," is a bullet hole. "Wow," he says to the farmer, "that’s pretty good shooting. How’d you do it?" "Oh," says the farmer, "it was easy. I painted the targets after I shot the...
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A SAS Implementation of Confidence Intervals for Single Proportion: Eleven Methods

July 14, 2011
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The following two papers by Professor Robert Newcombe, in my limit observation, are the most frequently cited papers in the industry: Two-sided confidence intervals for the single proportion: comparison of seven methods. Newcombe RG, Stat Med , Volume 17 , 8 (April 1998) pp.857-872 Interval estimation for the difference...
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