Study	Reason for exclusion
COOPE	Only 2 subjects met criteria defined in this review.
FEVER 2005	Not a placebo or no treatment controlled trial.
HDFP	No untreated control group.
MRC2	Only 2 subjects met criteria defined in this review.
MRFIT	No untreated / placebo control group.
Oslo	Approximately half of the subjects had moderately elevated BP and data was not available for the subjects with mild elevation of BP separately.
USPHSHC	Approximately half of the subjects had moderately elevated BP and data was not available for the subjects with mild elevation of BP separately.