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Table 1 Main demographic features, HBV genotypes in Western Amazon, Brazil

From: Molecular epidemiology of hepatitis B and hepatitis delta viruses circulating in the Western Amazon region, North Brazil

Study group Manaus Eirunepe Total
Blood donors Outpatients   
Number (n) 130 60 34 224
Male: female# 98:32 38:22 12:22 -
Age# media, range 35 (18–60) 40 (19–66) 33 (18–50) -
Genotyped HBV samples (n) 110 52 29 191
% HBV A (n/total)* 61.8 (68/110) 44.2 (23/52) 48.3 (14/29) 105
% HBV D (n/total)* 15.4 (17/110) 21.1 (11/52) 17.2 (5/29) 33
% HBV F (n/total)* 22.8 (25/110) 34.6 (18/52) 34.5 (10/29) 53
  1. *p > 0.05 for Chi square comparisons of HBV genotypes among Manaus blood donors, Manaus outpatients and Eirunepe individuals; **p < 0.05 for Fisher’s exact test comparison of HBV A frequencies between Manaus blood donors and outpatients; #p < 0.001 for ANOVA comparisons of ages and Chi square comparison of male:female ratios among Manaus blood donors, Manaus outpatients and Eirunepe individuals.