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Comparison of the relationship between (A) systolic blood pressure (SBP) and (B) diastolic blood pressure (DBP) surge levels and 12-h ambulatory blood pressure averages. Data shows the linear trend in hypertensive firefighters (Solid line, dark grey squares) and normotensive firefighters (dashed line, light grey diamonds). BP surge values capture the BP immediately occurring when the pager alarm sounds. *Both significant at p = .01.
