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. 2021 Dec 10;10(24):e022913. doi: 10.1161/JAHA.121.022913

Figure 1. Probability of death by continuous baseline NT‐proBNP. Restricted cubic spline modeling for the probability of in‐hospital mortality across varying levels of NT‐proBNP admission value.

Figure 1

The solid black line indicating probability and the shaded area representing 95% CI. The vertical lines indicate the interquartile (IQR: 25th=74.55 pg/mL, 50th=299.0 pg/mL, and 75th=1608.0 pg/mL) of NT‐proBNP values. The C‐statistic for the model was 0.704, knots located at 200, 600 and 1000 pg/mL with logarithmic smoothing of the curve. A rug plot on the x axis displays the density of the data. The presentation of the x axis was restricted to NT‐proBNP values <3000 pg/mL to display the highest density of data and increased in probability of death. NT‐proBNP indicates N‐terminal pro‐B‐type natriuretic peptide.