Definition of Benefit

LT Lei Tian
KC Kai Cao
DM Dong-Li Ma
SZ Shi-Qiang Zhao
LL Li-Xin Lu
AL Ao Li
CC Chang-Xi Chen
CM Chun-Rong Ma
ZM Zhang-Fang Ma
YJ Ying Jie
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In the present study, we estimated the average benefit brought by 650 nm LLRL compared with the control, which was calculated as follows:

where B is the benefit; Mt is the mean value of 6-month change in primary outcomes of the LLRL group if data is normally distributed, otherwise the median value would be used; and Mc is the mean value of six-month change in primary outcomes of the control group if data is normally distributed, otherwise the median value would be used.

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