# Category : Science and Education

Archive : EPI_PAK.ZIP

Filename : SAMPSIZE.DOC

SAMPSIZE

A Program for Sample Size

and Power Calculations

Version 1.0, 8/June/1990

(c) 1989, 1990

by

Kevin M. Sullivan

Division of Nutrition

Centers for Disease Control

1600 Clifton Rd. NE, MS A08

Atlanta, GA 30333

SAMPSIZE computes sample sizes for cohort/cross sectional

studies and for unmatched case-control studies. The

formulas used are from:

Kelsey JL, Thompson WD, and Evans AS: Methods in

Observational Epidemiology, Oxford University Press,

New York, 1986 (see tables 10-11 and 10-15)

and

Fleiss JL: Statistical Methods for Rates and

Proportions, John Wiley & Sons, New York, 1981 (see

formulas 3.18 and 3.19).

Sample size calculations for Population Attributable

Fraction (PAF) are based on formulae from:

Browner WS, Newman TB. Sample size and power based on

the population attributable fraction. Am J Public

Health 1989; 79:1289-1294.

Power calculations for cohort/cross sectional studies and

for case-control studies are based on:

Schlesselman JJ: Case-Control Studies, Oxford

University Press, New York, 1982 (see formula 6.9).

Should you have any suggestions or comments, please

contact me.

DISTRIBUTION CONDITIONS

NON-WARRANTY. SAMPSIZE is provided "as is" and without any

warranty expressed or implied. The user assumes all risks of

the use of SAMPSIZE. SAMPSIZE may not run on your particular

hardware/software configuration. We bear no responsibility

for any mishap or economic loss resulting therefrom the use

of this software.

COPYRIGHT CONDITIONS. You may make and distribute copies of

SAMPSIZE provided that there is no material gain involved.

USE AT YOUR OWN RISK. All risk of loss of any kind due to

the use of SAMPSIZE is with you, the user. You are

responsible for all mishaps, even if the program proves to

be defective. This program makes certain assumptions about

the data. These assumptions affect the validity of

conclusions made based on the output from this program.

Please acknowledge SAMPSIZE in any manuscript that uses

its calculations.

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This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/