TY  - GEN
AU  - Hernán, Miguel A
AU  - Monge Corella, Susana
PY  - 2023
DO  - 10.1136/bmj.p1135
UR  - http://hdl.handle.net/20.500.12105/16171
AB  - Effect estimates may be biased when the study design or the data analysis is conditional on a collider—a variable that is caused by two other variables. Causal directed acyclic graphs are a helpful tool to identify colliders that may introduce...
LA  - eng
PB  - BMJ Publishing Group
KW  - Selection Bias
KW  - Humans
KW  - Bias
TI  - Selection bias due to conditioning on a collider
TY  - research article
ER  -