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.
Cumulated partitioned hazard ratio scores for physical activity in the prediction of CHD deaths during 35 years. Thick line indicates cumulated partitioned hazard ratio scores; dotted lines indicate upper and lower confidence limits; straight line indicates fitted regression equation.
