slightly significantp = 0.047
Blood pressure classes and hypertension Taken as a whole, the differences in the distribution of the four diagnostic classes in the two groups were slightly significant ( p = 0.047), with a lower prevalence of normal BP (58.0% vs. 82.2%) and a higher prevalence of the other three classes in Group A; in particular, masked hypertension was much higher in Group A (25.9% vs. 8.9%) (Table 4 ).