Table 3.

The meta-analysis results after individual exclusion of studies.

Excluding studies	I2	SMD	95%CI	P
Ahn S 2012	89%	-0.57	[-0.93, -0.21]	0.002
Chan 2018	88%	-0.63	[-0.99, -0.26]	0.0008
Chen 2010	88%	-0.63	[-0.99, -0.26]	0.0007
Gao 2017	83%	-0.47	[-0.78, -0.17]	0.002
Hui 2015	84%	-0.64	[-0.97, -0.31]	0.0002
Hu 2022	89%	-0.58	[-0.94, -0.21]	0.002
Li 2015	89%	-0.62	[-0.99, -0.26]	0.0008
Liu 2024	89%	-0.53	[-0.89, -0.18]	0.003
Li 2012	89%	-0.59	[-0.96, -0.23]	0.001
Meng 2014	86%	-0.52	[-0.86, -0.18]	0.003
Song 2013	89%	-0.59	[-0.95, -0.22]	0.002
Zhao 2017	89%	-0.57	[-0.92, -0.21]	0.002
Zhou 2021	89%	-0.57	[-0.94, -0.21]	0.002
Zhu 2017	88%	-0.53	[-0.88, -0.18]	0.003