Table 8.

Level of IgE in peripheral blood as a measure of CVA.

Study or subgroup	Mean	Experimental		Mean	Control		Weight	Mean difference
		SD	Total		SD	Total		IV, fixed, 95% CI
Li Qiaoxiang 2017	119.33	79.63	60	167.94	89.23	60	8.8%	-48.61 [-78.87, -18.35]
Ma Ying 2018	131.2	26.4	66	189.3	31.7	66	81.2%	-58.10 [-68.05, -48.15]
Xue Ming 2018	124.24	112.45	45	171.58	112.99	45	3.7%	-47.34 [-93.92, -0.76]
Zhang Xiaoyan 2014	136.61	115.56	50	158.94	127.27	46	3.4%	-22.33 [-71.10, 26.44]
Zhao Qi 2018	134.61	117.61	42	156.49	124.88	42	3.0%	-21.88 [-73.76, 30.00]
Total (95% CI)			263			259	100%	-54.58 [-63.54, -45.61]

Heterogeneity: chi² = 3.93; df = 4 (P = 0.42); I² = 0%. Test for overall effect: Z = 11.93 (P < 0.00001).