Zhiqiang Wang () (Menzies School of Health Research)
Abstract
pwploti plots statistical power on the Y-axis and the required sample size of on the X-axis. Several lines can be plotted on the power curve, each one corresponding to a value of difference (defined in dlist) between two groups. It is an extension to sampsi. Most sampsi options are accepted. Note: pwploti only specifies the mean or proportion value in group 1, #1. The corresponding values in group 2 are derived from the #1 and differences between two groups, dlist. -keyplot- (q.v.) should be installed when more than four labels are needed.
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Publisher Info
Software component provided by Boston College Department of Economics in its series Statistical Software Components with number
S377701.
Size: Programming language: Stata Requires: Stata version 6.0 Date of creation: 13 May 1999 Date of revision:
04 Dec 2000 Handle: RePEc:boc:bocode:s377701
Note: This module may be installed from within Stata by typing "ssc install pwploti". Windows users should not attempt to download these files with a web browser. Contact details of provider: Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA Phone: 617-552-3670 Fax: +1-617-552-2308 Email: Web page: http://fmwww.bc.edu/EC/ More information through EDIRC