Table 2.

The publication bias by Egger test.

Meta-analysis	Number of included studies	T value	df	p-value
IL-2	4	1.67	2	0.24
IL-4	4	-1.05	2	0.40
IL-6	7	1.60	5	0.17
IL-8	4	2.75	2	0.11
IL-12	5	3.08	3	0.05 (0.0542)
TNF-α	8	1.65	6	0.15
IFN-γ	4	6.44	2	0.02*
CD3	13	-0.60	11	0.56
CD4	13	-0.23	11	0.82
CD8	13	-0.65	11	0.53
CD4/CD8	11	-0.03	9	0.97

*P<0.05.