研究表明患高血压的中国人收缩压控制在120-130发生首次中风的风险最低

低于120风险急剧上升；高于130风险逐步上升。

文献链接：

Optimal Systolic Blood Pressure Levels for Primary Prevention of Stroke in General Hypertensive adults

--Findings From the CSPPT (China Stroke Primary Prevention Trial)

主要结果见下图。

Comparisons of first stroke by time-averaged on-treatment systolic blood pressure (SBP) categories in different subgroups. HR indicates hazard ratio.