You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
63 lines
1.5 KiB
Plaintext
63 lines
1.5 KiB
Plaintext
7 months ago
|
|
||
|
|
.-
|
||
|
|
help for ^iccconf^
|
||
|
|
.-
|
||
|
|
|
||
|
|
Confidence Interval for A Single Intraclass Correlation (ICC)
|
||
|
|
-------------------------------------------------------------
|
||
|
|
|
||
|
|
.^iccconf <icc> <k> <reps>, 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
|
||
|
|
--------
|
||
|
|
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
|
||
|
|
----------
|
||
|
|
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
|
||
|
|
--------
|
||
|
|
Manual or on-line help for: @loneway@, @xtreg@, or ^bootcor^, ^xtrho^ if installed
|