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. Author manuscript; available in PMC: 2017 Sep 1.
Published in final edited form as: Crit Care Med. 2014 Oct;42(10):2278–2289. doi: 10.1097/CCM.0000000000000504

Figure 3.

Figure 3

This figure compares mean tidal volumes (VT, ±SE) pre-randomization (open circles) and post-randomization (closed circles) in RCTs at ARDSNet centers (Figure 3A) and at non-ARDSNet centers that either did (Figure 3B) or did not (Figure 3C) stipulate the use of a low VT protocol for patients after randomization. The figures in the insets in each panel show the estimated mean pre- and post-randomization VT in each group of trials with p-values reflecting the significance for the change in VT.