<The CHISQ option, which performs a Pearson Chi-Square test to detect associations.>
My understanding is that this option is for differences between categorical variables, not trends. Am I wrong?
<The SPEARMAN option, which performs Spearman rank correlation to test for monotonic trends.>
Would this option be used to assess for a trend in ordinal categories of a dependent variable and an independent variable that has more than two ordered categories.?
If I was trying to determine a trend in quantiles of HDL cholesterol, for example, over time (i.e., years), what would be the proper SURVEY syntax?
Something like this?
PROC SURVEY LOGISTIC DATA=data_set;
TABLES hdl_quantiles*year / SPEARMAN;
<The COCHRANQ option, which performs Cochran-Armitage trend test to detect linear trends.>
My understanding is that this option is used to assess whether a trend is present between a binary (two levels, 0/1) dependent variable and an independent variable that has been categorized into more than two ordered categories.
If the non-SURVEY syntax were this (below):
proc freq data=chol9c;
table female*hdl_cat/trend noprint;
run;
What would the PROCSURVEY syntax look like?
Also, what SURVEY option should be used if the dependent variable is multinomial and not binary or ordinal (e.g., Race)? My understanding is that the Cochran-Mantel-Haenszel test would serve this purpose in a non-SURVEY procedure? The cmh option is not available in PROC SURVEYFREQ...
PROC FREQ data=dataset;
TABLES race*year/cmh noprint;
RUN;
Thanks.
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