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.
Descriptive statistics for follow-up IOP in the OHTS data, where the intercept, slope, and variance of residuals are estimated from the simple linear regression model fit to each patient. Smoothed cubic-splines are imposed to those who have developed POAG (broken line) and those who are free of POAG (solid line) respectively
