4 papers
Sharp Lower and Upper Bounds for the Covariance of Bounded Random Variables
Ola Hössjer, Arvid Sjölander
In this paper we derive sharp lower and upper bounds for the covariance of two bounded random variables when knowledge about their expected values, variances or both is available.…
Nonparametric bounds for causal effects in imperfect randomized experiments
Erin E. Gabriel, Arvid Sjölander, Michael C. Sachs
Nonignorable missingness and noncompliance can occur even in well-designed randomized experiments making the intervention effect that the experiment was designed to estimate nonide…
Causal bounds for outcome-dependent sampling in observational studies
Erin E. Gabriel, Michael C. Sachs, Arvid Sjölander
Outcome-dependent sampling designs are common in many different scientific fields including epidemiology, ecology, and economics. As with all observational studies, such designs of…
Aim for clinical utility, not just predictive accuracy
Michael C Sachs, Arvid Sjölander, Erin E Gabriel
The predictions from an accurate prognostic model can be of great interest to patients and clinicians. When predictions are reported to individuals, they may decide to take action…