Causal inference question

I used DoWhy to create some synthetic data. The causal graph is shown below. Treatment is v0 and y is the outcome. True ATE is 10. I also used the DoWhy package to find ATE (propensity score matching) and I obtained \~10, which is great. For fun, I fitted a OLS model (y \~ W1 + W2 + v0 + Z1 + Z2) on the data and, surprisingly the beta for the treatment v0 is 10. I was expecting something …

causal causal inference data datascience dowhy fun graph inference ols package question synthetic synthetic data treatment true