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Here is what I have tried:
PROC NPAR1WAY DATA=trout4 wilcoxon median;
CLASS dose;
VAR hemoglobin;
RUN; quit; title;
It is not giving me individual contrasts?
Accepted Solutions
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Remaining questions have been:
I have run a Kruskal Wallis test using proc npar1way. Pairwise two-sided multiple comparison analysis is output.
What is the alpha significance level here? Are we using alpha/12 in case of 4 four dose groups to obtain P>DSCF?
What if I wanted to run a one-tailed test? How would sas syntax change?
PROC NPAR1WAY DATA=trout4 wilcoxon dscf; CLASS dose; VAR hemoglobin; RUN; quit; title;
To interested readers, checking out this reference gave the answers.
Juneau, P. (2004), "Simultaneous Nonparametric Inference in a One-Way Layout Using the SAS System," Proceedings of the PharmaSUG 2004 Annual Conference, Paper SP04.
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Remaining questions have been:
I have run a Kruskal Wallis test using proc npar1way. Pairwise two-sided multiple comparison analysis is output.
What is the alpha significance level here? Are we using alpha/12 in case of 4 four dose groups to obtain P>DSCF?
What if I wanted to run a one-tailed test? How would sas syntax change?
PROC NPAR1WAY DATA=trout4 wilcoxon dscf; CLASS dose; VAR hemoglobin; RUN; quit; title;
To interested readers, checking out this reference gave the answers.
Juneau, P. (2004), "Simultaneous Nonparametric Inference in a One-Way Layout Using the SAS System," Proceedings of the PharmaSUG 2004 Annual Conference, Paper SP04.
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Ok. I found dcsf.
dcsf requests a pairwise multiple comparison analysis and specifically Wilcoxon multiple comparisons. Are these the same?
I am working with Gibbons Nonparametric Statistical Inference equality of k distributions in nonparametric section of the text. See eq 10.4.8.