The Performance of Short-Term Heart Rate Variability in the Detection of Congestive Heart Failure

Figure 5

Box plot of features computed for NSR and CHF heartbeat intervals. The central mark represents the median for 40 volunteers (NSR) and 29 subjects (CHF); the edges of the box are the 25th and 75th percentiles. While outliers are plotted individually (+), the whiskers are considered not outliers.