·2,447,543篇论文数据，部分数据来源于NoteExpress
Funnel plots were drawn to determine publication bias by plotting the net change in systolic BP against the reciprocal of the standard error of change in systolic BP.
通过绘制收缩期血压的网格变化与收缩期血压标准误差的倒数所得到的漏斗图，用此图去分析出版倾向。
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