Seroprevalence of Toxoplasma gondii infection in blood donors in mainland China: a systematic review and meta-analysis

Open Access

Table 3.

Seroprevalence of T. gondii in blood donors associated with risk factors.

Factors	Categories	No. of studies	No. of blood donors	No. of IgG(+)	Prevalence [95% CI] (%)	Heterogeneity		Between-group differences^*
						I ²	p-value	Q	p-value
Method								9.46	0.0021
	ELISA	31	41431	3298	7.30 [5.25; 9.67]	98.70%	<0.01
	IHA	9	8353	280	3.16 [1.87; 4.76]	90.40%	<0.01
Age								0.99	0.6082
	18–30	15	15582	1471	7.37 [4.02; 11.61]	98.70%	<0.01
	30–40	15	5458	469	8.49 [5.87; 11.53]	92.60%	<0.01
	>40	15	2903	270	9.36 [6.10; 13.17]	88.70%	<0.01
Gender								0.07	0.7983
	Male	22	16652	1369	6.75 [4.31; 9.67]	97.90%	<0.01
	Female	22	14545	1104	6.21 [4.01; 8.83]	97.10%	<0.01
Occupation								1.84	0.6061
	Students	10	5152	332	4.47 [1.83; 8.13]	96.30%	<0.01
	Job-holders	10	6355	536	5.99 [2.57; 10.64]	97.50%	<0.01
	Farmers	10	4611	561	8.49 [3.91; 14.54]	97.50%	<0.01
	Others	8	2356	188	6.46 [3.22; 10.65]	92.00%	<0.01
Blood								0.01	0.9997
	A	3	1421	104	7.74 [2.38; 15.69]	94.60%	<0.01
	B	3	1773	140	7.36 [1.84; 15.99]	96.40%	<0.01
	AB	3	406	28	6.97 [0.05; 21.35]	92.80%	<0.01
	O	3	1382	95	7.23 [1.51; 16.50]	95.80%	<0.01
Education								10.29	0.0058
	University	3	849	41	4.80 [3.44; 6.37]	0.00%	0.63
	High school	3	2361	161	6.58 [4.79; 8.63]	72.00%	0.03
	≤Middle school	3	641	58	9.01 [6.89; 11.38]	0.00%	0.72

Test for subgroup differences using random effects model.

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