The degree to which more intensive blood pressure reduction is better than less intensive for secondary stroke prevention has not been delineated.

中文翻译：

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压差降低幅度与中风二级预防之间的关联：荟萃分析和荟萃回归。

对于二级卒中预防而言，强化降压优于强化降压的程度尚未明确。