August 2009
Intermediate to advanced
648 pages
17h 35m
English
book
Categorical Data Analysis Using The SAS® System, 2nd Edition
by Maura E. Stokes, Charles S. Davis, Gary G. Koch
Content preview from Categorical Data Analysis Using The SAS® System, 2nd Edition
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10.7. 1:m Conditional Logistic Regression
Researchers in a midwestern county tracked flu cases requiring hospitalization in those residents aged 65 and older during a two-month period in one winter. They matched each case with two controls according to sex and age and also determined whether the cases and controls had a flu vaccine shot and whether they had lung disease. Vaccines were then verified by county health and individual medical practice records. Researchers were interested in whether vaccination had a protective influence on the odds of getting a severe case of flu.
This study is an example of a 1:2 matched study since two controls were chosen for each case. Thus, in order to analyze these data with the SAS System, you need to use ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.