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Table 1 Seroprevalence for HGV in blood donors associated to risk factors detected by EIA/ELISA

From: Prevalence of hepatitis G virus infection among 67,348 blood donors in mainland China

Factors Categories No. of studies No. of blood donors No. of positivity Prevalence [95%CI](%) Heterogeneity Between-group differences
I 2 P-value Q P-value
Region         26.81 0.0002
  Northeast 7 2150 60 2.69[1.55;4.11] 66% P < 0.01   
  East China 32 22,286 544 2.83[2.01;3.76] 92% P < 0.01   
  South China 12 10,800 315 3.84[1.39;7.30] 97% P < 0.01   
  Northwest 13 11,803 637 5.68[4.80;6.63] 62% P < 0.01   
  Central China 9 3958 149 5.37[3.11;8.16] 88% P < 0.01   
  Southwest 6 3133 92 3.21[1.78;5.00] 80% P < 0.01   
  North China 12 6919 270 5.08[2.73;8.08] 95% P < 0.01   
Sample type         0.34 0.56
  Full blood 70 46,022 1376 3.81[3.06;4.63] 94% P < 0.01   
  Plasma 8 15,027 691 4.80[2.30;8.10] 97% P < 0.01   
Type of donation         3.38 0.066
  Voluntary 59 36,232 1033 3.03[2.20;3.97] 95% P < 0.01   
  Paid 32 24,817 1034 4.46[3.47;5.56] 90% P < 0.01   
Sex         0.43 0.51
  Male 10 14,031 469 3.06[1.22;5.63] 98% P < 0.01   
  Female 10 10,310 390 4.10[2.01;6.85] 96% P < 0.01   
Age         3.48 0.32
  21–30 3 530 15 2.13[0.88;3.76] 0 P = 0.60   
  31–40 3 597 15 2.10[0.88;3.70] 10% P = 0.33   
  41–50 3 434 19 4.03[1.44;7.60] 42% P = 0.18   
  51- 1 10 1 10.0[0.0;38.09] 0