Table 5. Forest plot of HBV MTCT rate (the second trimester or the third trimester).

Study or Subgroup	Second Trimester		Third Trimester		Weight	Risk Ratio	Risk Ratio
	Events	Total	Events	Total		M-H,Fixed,95% CI	M-H,Fixed,95% CI
Han et al.23	0	257	0	105		Not estimable
Hu et al.20	0	30	1	30	17.8%	0.33 [0.01, 7.87]
Liu et al.22	0	24	2	32	25.5%	0.26 [0.01, 5.26]
Pan et al.25	0	66	0	94		Not estimable
Wang et al.24	0	21	0	27		Not estimable
Wang et al.21 (1)	0	20	0	20		Not estimable
Wang et al.21 (2)	0	20	0	20		Not estimable
Wang et al.21 (3)	0	20	0	20		Not estimable
Wang et al.21 (4)	0	20	0	20		Not estimable
Wang et al.21 (5)	0	20	0	20		Not estimable
Wang et al.21 (6)	0	20	0	20		Not estimable
Wang et al.18 (1)	0	20	0	20		Not estimable
Wang et al.18 (2)	0	20	0	20		Not estimable
Wang et al.18 (3)	0	20	0	20		Not estimable
Wang et al.18 (4)	0	20	0	20		Not estimable
Wang et al.18 (5)	0	20	0	20		Not estimable
Wang et al.18 (6)	0	20	0	20		Not estimable
Yin and Wang19	0	74	0	149		Not estimable
Zhou et al.17	0	49	5	64	56.7%	0.12 [0.01, 2.09]
Total (95% CI)		761		741	100%	0.19 [0.03, 1.08]
Total events	0		8
Heterogeneity: Chi2 = 0.27; df = 2 (P = 0.87); I2 = 0%
Test for overall effect: Z = 1.87 (P = 0.06)