SAS

Use of SAS for Epidemiologists

Below are .pdf files that provide details on the use of selected SAS PROCs.  They were developed as teaching tools for graduate level courses.  Ideally these documents will undergo continual improvements, so if you have any questions, comments, or suggestions, please contact us at Epi.Centre.Org@gmail.com.  Click on the links below to view/download the files:

Use of SAS PROC FREQ for Epidemiologists    (79 pages) Updated May 13 2026

Use of SAS PROC LOGISTIC for Epidemiologists    (80 pages) Updated May 13 2026

Use of SAS PROC SURVEYFREQ for Epidemiologists   (31 pages) Updated May 13 2026

Use of SAS PROC SURVEYLOGISTIC for Epidemiologists   (16 pages) Updated May 13 2026

Use of SAS PROC GENMOD for Epidemiologists   (49 pages) Updated May 13 2026

Use of SAS PROC LIFETEST, PHREG, and GENMOD with Person-Time Analysis for Epidemiologists   (25 pages) Updated May 13 2026

SAS macros

Macros to analyze person-time data using tabular analysis approach

Analysis of a single rate Version 2 - NEW version July 30 2026

Analysis of a single rate Old version - May 13 2026

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Analysis of a 2x2 table with person-time data Version 2 - NEW version August 2026

Analysis of a 2x2 table with person-time data - Old version - May 13 2026

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Analysis of stratified 2x2 tables with person-time data - to be added

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Macro to analyze stratified count data for assessing interaction and confounding 

STRAT2X2 - Macro for assessing interaction and confounding in stratified approach for the Risk Ratio, Risk Difference, and Odds Ratio

Aug 8 2026

SAS macros for Mid-P calculations

MIP-P FOR COMPARING 2 SMRs.sas 

MID-P FOR SMR EQUAL TO 1.sas

MID-P FOR SINGLE PROPORTION.sas

MID-P FOR INCIDENCE DENSITY RATE.sas

MID-P FOR COMPARING 2 RATES.sas

MID-P FOR COMPARING 2 PROPORTIONS.sas