[Prevalence of prehypertension and associated cardiovascular risk: two years follow up results].

Objective: To observe the prevalence, blood pressure change in prehypertensive population and associated cardiovascular risk factors.

Methods: Data from a prehypertensive cohort defined with the JNC-7 prehypertension diagnostic criteria were obtained in the employees of kailuan group during the health examination between 2006 to 2007 and the same population was revisited between 2008 to 2009 to observe the change of blood pressure and the associated determinants for blood pressure change.

Results: (1) There were 25 474 prehypertensive during the 1(st) visit and 8361 subjects developed hypertension during the 2(nd) visit (35.