Confounding

Author: r0f1

README.md

@@ -800,7 +800,8 @@ Distances for comparing histograms and detecting outliers - [Talk](https://www.y
 [causality](https://github.com/akelleh/causality) - Causal analysis using observational datasets.  
 
 ##### Papers
-[Difference between Effect Modification and Interaction](https://www.sciencedirect.com/science/article/pii/S0895435621000330)  
+[Bours - Confounding](https://edisciplinas.usp.br/pluginfile.php/5625667/mod_resource/content/3/Nontechnicalexplanation-counterfactualdefinition-confounding.pdf)  
+[Bours - Effect Modification and Interaction](https://www.sciencedirect.com/science/article/pii/S0895435621000330)  
 
 #### Probabilistic Modeling and Bayes
 [Intro](https://erikbern.com/2018/10/08/the-hackers-guide-to-uncertainty-estimates.html), [Guide](https://github.com/CamDavidsonPilon/Probabilistic-Programming-and-Bayesian-Methods-for-Hackers)