Figure 2. The Effect on Systolic Blood Pressure of Dietary Sodium Intake during the Control Diet (Panel
A) and the DASH Diet (Panel B), According to Subgroup.
The error bars represent the 95 percent confidence limits of the changes in blood pressure for each
subgroup. Hypertension was defined as an average systolic blood pressure of 140 to 159 mm Hg or an
average diastolic blood pressure of 90 to 95 mm Hg during the three screening visits. The “other” category
of race and ethnic group is composed primarily of non-Hispanic whites (see Table 1). Asterisks
(P«0.05), daggers (P