Resolution: standard / high
Figure 3.
DAG showing where, in addition to its effect on blood pressure (BP), birth weight (BW) shares an unmeasured common cause (U) with current weight (CW) which also has an effect on BP.
Arah Emerging Themes in Epidemiology 2008 5:5 doi:10.1186/1742-7622-5-5
Download authors' original image