Fig. 2: Length of hospitalization by gestational age group among neonates with acute kidney injury.

Box-and-whiskers plot illustrating length of hospitalization among the various gestational age groups. The Box is defined by the 25th and 75th percentiles. Within the Box, the mean length of hospitalization is indicated by the notation (open circle, cross, X, triangle, curved line, respectively) and the median length of hospitalization is indicated by the horizontal bold bar. The whiskers indicated the minimum and maximum observations. 1Significant for non-linear trend (p < 0.0001) using the Jonckheere-Terpstra test.