Hello all,   Is there any way to check multicollinearity using proc GLM?   proc glm data=tmp ; class study CNS stk_loc sex; model fim =study sex age CNS stk_loc /solution ss3 ; run;   The dependent variable is continuous All the independent variables are categorical except age which is continuous   I am familiar with VIF in proc reg, but needed to create dummy variables.   any input appreciated ... View more

Hello all, Is it correct to use the code below to obtain the λ in a Box-Cox transformation? I’m unsure because my model includes an independent categorical variable (pre_score) plus a few categorical and continuous confounders ( age neuro_scale sex ). I was looking for a way to include a class statement to account for the categorical nature of these variables, but it seems that PROC TRANSREG does not support the class statement. Is that necessary to include the categorical nature of these variable?     %let c = 1.45; proc transreg data=tmp1 ss2 details plots=(boxcox); model BoxCox(fim / parameter=&c convenient lambda=-2 to 2 by 0.05) = identity(pre_score age neuro_scale sex); run; Thanks,   ... View more

Hello all, I have an independent categorical variable named "pre_score" with 6 categories (fit, mild, moderate, very mild, managing fit, very fit) and a few confounders named (age, sex, neoro). As shown in the attached screenshot, The overall F test in the first table is significant, and the F- test corresponding to pre_score in the second table ( source table ) is not significant, however one of the categories of pre-score in the last table is significant,   I'm unsure why this happen?  I was expected as the F-test corresponding to pre_score is not significant, there shouldn’t be any significant one for any categories of pre-score in the last table,  or  if there are any significant categories like my example, I would expect the corresponding  F-test to be significant as well.   proc glm data=tmp PLOTS=DIAGNOSTICS ; class pre_score neuro sex; model diff=pre_score age neuro sex/solution ss3; run;   any input appreciated,     ... View more

Hello All, I want to run this macro  %tablen( DATA =tmp1, by= VV , VAR = histo histo_new left_para right_para tumor_clin tumor_imaging tumor_path residual doimm doi doi_new lvsi lvsi_new vag vag_new margins marg_new marg_locn marg_locn_new para para_new ln_involve total_pos total_count, TYPE = 2 2 1 1 1 1 1 2 1 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1, PVALS= 2 2 3 3 3 3 3 1 3 0 1 0 1 0 2 0 2 0 2 0 2 2 3 6, SHOWPVAL =1) ;   but I dont have the defined macro, any helo appreciated to figure out how to run that Thanks ... View more