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Scatterplot of hemoglobin (Hb) vs. log-transformed iohexol-measured glomerular filtration rate (mGFR) by race. White children (N=338) are depicted with open circles; African-American (A-A) children (N=91) are depicted with solid circles. Race -specific linear regression lines of Hb on log(mGFR) are overlayed. Regression line for white children is a dashed line,; for A-A children is a solid line.
