Statistical analysis
Given the nature of this quality improvement project, there was no formal power calculation or a pre-specified sample size calculation. Because ICUs started at different time points, data were standardized so that the baseline study month was defined as the first month of data collection irrespective of the actual date. Descriptive standardized data on daily care process measures and outcomes were reported as unadjusted proportions for each month with an associated 95% confidence interval (CI). Line plots were generated for all study parameters.