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help for ^iccconf^
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Confidence Interval for A Single Intraclass Correlation (ICC)
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.^iccconf , level(#)^
^Description^
^-----------^
^iccconf^ is an immediate command that computes a confidence interval for a
single intraclass correlation (ICC). The procedure is based on Rosner's approach
using the F-test.
Three inputs are required:
^icc^ is the intraclass correlation. The input must be a value between 0 and 1
^k^ is the number of subjects
^reps^ is the number of repeated assessments or "within" pair
measurements.
^Option^
^------^
level(#) The level option allows the user to modify the confidence limit.
Use values between 0 and 1. The default is .95.
Example
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To find a 95% confidence interval for an ICC of .914, based on 5 observations
with 2 replcations each:
^.iccconf .914 5 2^
For a 90% confidence interval for the above example, type:
^.iccconf .914 5 2, level(.9)^
References
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Rosner, B. "Fundamentals of Biostatistics, 6th ed" Duxbury, Press (The Thompson
Company): Belmont, CA, 2006, pgs 615-616.
Author
------
Paul F. Visintainer, PhD
Springfield, MA 01089
visint46@gmail.com
Also see
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Manual or on-line help for: @loneway@, @xtreg@, or ^bootcor^, ^xtrho^ if installed