topic Directed Acyclic Graph with SAS in Statistical Procedures

Directed Acyclic Graph with SAS

Haemoglobin17 — Mon, 05 Dec 2022 17:34:38 GMT

Hi everyone,

In this period I've been trying to create a DAG for a research project that I've been carrying on. When I discovered that SAS has a specific procedure I was enthusiast , however after several attempts I only obtained tables that summarise the variables in the model and that estimate the causal effect. However it didn't create any graph. Am I doing something wrong? Is it possible to create a DAG graph in SAS?

Here a code that I copied from the SAS User's guide.

Thank you all!!

ods graphics on;

proc causalgraph;
model "Timm17TwoLatent"
Age ==> Parity PFAS Education,
Parity ==> PrevBF Duration PFAS,
PrevBF ==> PFAS Duration,
PFAS ==> Duration,
Education ==> Duration Employment PFAS BMI Alcohol Smoking,
Employment ==> Duration PFAS BMI Alcohol Smoking,
BMI Alcohol Smoking ==> Duration;
identify PFAS ==> Duration;
unmeasured Alcohol Smoking;
run;

Re: Directed Acyclic Graph with SAS

StatDave — Mon, 05 Dec 2022 21:09:27 GMT

PROC CAUSALGRAPH examines the structure of graphical causal models and suggests statistical strategies or steps that enable researchers to estimate causal effects that have valid causal interpretations. Causal models are encoded in the form of directed acyclic graphs (Pearl 2009a, 2009b), which are the primary input for the procedure. It does not produce a graph such as shown in the Getting Started section of the PROC CAUSALGRAPH documentation which represents the causal model that is analyzed in PROC CAUSALGRAPH.

Re: Directed Acyclic Graph with SAS

Haemoglobin17 — Tue, 06 Dec 2022 10:16:45 GMT

Thank you very much for the answer @StatDave ! What a pity.. the documentation was full of nice graphs...