By introducing definition 1 we want to emphasize the fact that when talking about the biological function of a gene we are interested in the causal involvement of a gene in a certain biological process instead of talking about biochemical properties.
Part of the difficulty lies in the application of the concept of direct causality before selecting all the causal variables of interest for a specific patient.
The collection of ancillary covariate information relevant to the causal question of interest.
Condition 4 mentioned above focused on choosing the correct statistical model for the causal question of interest.
Estimation of the causal effect of interest can proceed from the classical (frequentist) perspective or from the Bayesian perspective.
What matters is whether such methods yield the causal estimand of interest and whether the obtained estimand is capable of being evaluated against violations of causal assumptions.
The causal relations of interest may be hard to identify using the proportion of students in Polimodal as an instrument for schooling.
6 Our empirical design is similar to various other studies attempting to identify the causal effect of interest by using data on neighboring regions.
Equation 3 can be derived by substituting the first-stage equation (Eq. 2), into the causal relation of interest (Eq. 1), obtaining the reduced form.
