DECUS Heritage
Version: May 1990
Submitted By: W.D. Dupont & W.D. Plummer, Jr, Vanderbilt University School of Medicine
Operating System: MS-DOS V3.1, VAX/VMS V4.7
Source Language: FORTRAN 77
Keywords: Mathematical
Memory Requirements: 180KB
Notes: Executable and/or object code is furnished. This program is described in detail in Dupont & Plummer, "Power and Sample Size Calculations: A Review and Computer Program, Controlled Clinical Trials 1990; 11:116-28".
Abstract: The POWER program performs sample size and power calculations for the most common study designs. This program can be used for studies with dichotomous, continuous or survival response measures. The alternative hypotheses of interest may be specified either in terms of differing response rates, means, or survival times; or in terms of relative risks or odds ratios. Studies with dichotomous or continuous outcomes may be either matched or independent. The program can determine the sample size needed to detect a specified alternative hypothesis with the required power, the power with which a specific alternative hypothesis can be detected with a given sample size, or the specific alternative hypotheses that can be detected with a given power and sample size. This flexibility facilitates an iterative approach to sample size selection. The program writes a log file of all calculated estimates and can produce an output file for plotting power curves.
Last Update: Thu Jan 11 18:44:09 1996
Submitted By: W.D. Dupont & W.D. Plummer, Jr, Vanderbilt University School of Medicine
Operating System: MS-DOS V3.1, VAX/VMS V4.7
Source Language: FORTRAN 77
Keywords: Mathematical
Memory Requirements: 180KB
Notes: Executable and/or object code is furnished. This program is described in detail in Dupont & Plummer, "Power and Sample Size Calculations: A Review and Computer Program, Controlled Clinical Trials 1990; 11:116-28".
Abstract: The POWER program performs sample size and power calculations for the most common study designs. This program can be used for studies with dichotomous, continuous or survival response measures. The alternative hypotheses of interest may be specified either in terms of differing response rates, means, or survival times; or in terms of relative risks or odds ratios. Studies with dichotomous or continuous outcomes may be either matched or independent. The program can determine the sample size needed to detect a specified alternative hypothesis with the required power, the power with which a specific alternative hypothesis can be detected with a given sample size, or the specific alternative hypotheses that can be detected with a given power and sample size. This flexibility facilitates an iterative approach to sample size selection. The program writes a log file of all calculated estimates and can produce an output file for plotting power curves.
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Last Update: Thu Jan 11 18:44:09 1996