Figure 1
From: Prevalence of prehypertension and hypertension in a Chinese rural area from 1991 to 2007
Age-adjusted prevalence of normotension (NT), prehypertension (PHT) and hypertension (HT) in different years and genders. (a) Prevalence of NT, prehypertension (PHT) and HT in men; (b) Prevalence of NT, PHT and HT in women; (c) Prevalence of NT, PHT and HT in all subjects. *P<0.05, **P<0.01: vs. 1991; #P<0.05, ##P<0.01: vs. 1991; □P<0.05, □□P<0.01: vs. 2002.
