Biology — Causal DAG: Air Pollution & Asthma

title "Air pollution and asthma"
exposure E "Air pollution"
outcome O "Childhood asthma"
mediator I "Airway inflammation"
confounder U "Urban living"
confounder S "Socioeconomic status"
E -> I
I -> O
E -> O
U -> E
U -> O
S -> E
S -> O