FILENAME goptions URL "http://192.38.117.59/~linearpredictors/datafiles/goptions.sas";
%include goptions;

FILENAME url URL "http://192.38.117.59/~linearpredictors/datafiles/readVitaminD.sas";
%include url;

/*
All women
*/ 

PROC FORMAT;
    VALUE bmigroupf
        0 = "Normal weight"
        1 = "Slight over weight"
        2 = "Obese";  
RUN;

DATA women;
	SET vitamind (WHERE = (category=2));
    if bmi > 0 and bmi < 25 then bmigroup = 0;
    if bmi >= 25 and bmi < 30 then bmigroup = 1;
    if bmi >= 30 then bmigroup = 2;

    logvitd=log10(vitd);

RUN;

title 'marginal differences';    
PROC GLM data=women; 
    CLASS country;
    MODEL logvitd = country / clparm;
    ESTIMATE 'Denmark vs. Poland' country 1 0 0 -1;
    ESTIMATE 'Finland vs. Poland' country 0 1 0 -1;
    ESTIMATE 'Ireland vs. Poland' country 0 0 1 -1;
run;

title 'adjusted differences';    
PROC GLM data=women; 
    CLASS country;
    MODEL logvitd = country bmi / clparm;
    ESTIMATE 'Denmark vs. Poland' country 1 0 0 -1;
    ESTIMATE 'Finland vs. Poland' country 0 1 0 -1;
    ESTIMATE 'Ireland vs. Poland' country 0 0 1 -1;
run;