Figure 2.

Network diagrams for the association between interventions and outcomes. (A) Network diagram of 28-day mortality. (B) Network diagram of ventilator-free days at 28 days. (C) Network diagram of ICU mortality. (D) Network diagram of in-hospital mortality. (E) Network diagram of new infection events. Network diagrams showing ARDS treatment comparisons in clinical trials with respect to the number of studies and sample sizes. The width of the line is proportional to the number of trials directly comparing each pair of treatments, and the size of each node is proportional to the sample size of randomized participants.