The sign of the bias of unmeasured confounding.

@article{VanderWeele2008TheSO,
  title={The sign of the bias of unmeasured confounding.},
  author={Tyler J. VanderWeele},
  journal={Biometrics},
  year={2008},
  volume={64 3},
  pages={
          702-6
        }
}
Unmeasured confounding variables are a common problem in drawing causal inferences in observational studies. A theorem is given which in certain circumstances allows the researcher to draw conclusions about the sign of the bias of unmeasured confounding. Specifically, it is possible to determine the sign of the bias when monotonicity relationships hold between the unmeasured confounding variable and the treatment, and between the unmeasured confounding variable and the outcome. Some discussion… CONTINUE READING

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