# Waterfall Plot

Waterfall charts show how the value of a variable increases or decreases until it reaches a final value. In the chart, bars represent an initial value of Y and a series of intermediate values identified by X leading to a final value of Y.

The plot below shows the change in hemoglobin levels in individual patients after treatment with either Nicardipine or a placebo. Decreasing values are plotted to the left of the baseline value; increasing values are plotted to the right.

| 8 | Move your cursor over the plot to identify individual patients. Click a bar to select an individual subject

| 8 | To select multiple subjects, hold down while left-clicking.