异质性可能是因为受试者选择不同的差异或是研究前对锂盐暴露的不同，导致了终止效应的不同影响。
Heterogeneity may have been due to differences in selection of participants, and to differing exposures to lithium in the pre-study phase resulting in variable influence of a discontinuation effect.
研究作者写道，“与未提前终止的试验相比，提前终止的RCT的效应较大。”
"Truncated RCTs were associated with greater effect sizes than RCTs not stopped early," the study authors write.
通过逐步改变初始和终止地下水位间土单元中孔隙水的密度模拟地下水位上升的效应。
The effect of the rise of ground water level was simulated by increasing the mass density of pore water in the soil elements between the initial and targeted ground water levels.
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