Figure 3b:

Graphs show the estimated proportions of participants who met anatomic maturation criteria on the basis of 1-day and 2-week AVF flow and vein diameter. Shown are the predicted probabilities that the (a) KDOQI and (b) UAB criteria will be reached at 6 weeks for different levels of either 1-day (dashed curves) or 2-week (solid curves) mean vein diameter (horizontal axis) and AVF blood flow with the black, blue, and red curves representing AVF blood flows of 250, 500, and 1000 mL/min, respectively. The curves were fit by using logistic regression with cubic splines for both AVF flow and vein diameters. The different ranges in mean vein diameter in the predicted probability curves for different AVF flows reflect the positive association of AVF flow and mean vein diameter, with higher vein diameter ranges for higher AVF flows. Fistula location was not a significant predictor of meeting the anatomic maturation criteria after accounting for the 1-day or 2-week AVF flows and was thus not included in the models.