marginally significantP = 0.054
Simultaneous with this increasing bundle compliance trend, there were a marginally significant decreasing trend of VAP rate (Mantel-Haenszel chi-square test of trend was 3.71, P = 0.054) and a significant decreasing trend of ventilator utilization (Mantel-Haenszel chi-square test of trend was 190.81, P < 0.001).