Figure 2From: Do heart and respiratory rate variability improve prediction of extubation outcomes in critically ill patients?Distributions of respiratory rate (RR), rapid shallow breathing index (RSBI) and variability. This figure shows the distribution of values for passed and failed of three different measures (from the left: respiratory rate, rapid shallow breathing index, and respiratory rate variability recurrence quantification analysis: maximal diagonal line). Each grey circle represents a subject. The black box with a white line in between represents the median with its 95% confidence interval.Back to article page