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.
Observed proportion of practices reaching PPC®-PCMH™ Level 3 by 18-months follow-up, and piecewise ordinal multilevel model predicted slope estimates and P-values. * Piecewise ordinal multilevel model coefficients and p-values for intervention practices. † PPC®-PCMH™ level.
