Figure 2. Characteristics of living donors by year of donation.

Plots of pre-donation characteristics by year of donation with smoothed trends (loess curves) over time for each quantile (5^th, 25^th, 50^th, 75^th, and 95^th). Gray circles represent data points. The middle solid black line represents the median. The black dotted-dashed lines are the 25^th and 75^th percentiles. The black dotted lines are the 5^th and 95^th percentiles and the solid grey lines are smoothed through the minima and maxima. The slopes and significance of tests for linear trends are shown in Table 4.