Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
In this scatterplot of all available pairs of cardiac index (CI) and estimated glomerular filtration rate (eGFR) per patient, no association between CI and eGFR was observed. Compared with linear regression, neither 3-knot spline (p = 0.06), 4-knot spline (p = 0.08), nor fractional polynomial (p = 0.06) demonstrated a better fit to the data.
