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Table 1 Socio-demographic characteristics of blood donors

From: Seroprevalence of human immunodeficiency virus, hepatitis B and C viruses, and Treponema pallidum infections among blood donors at Shiyan, Central China

Characteristics No. (%)
Gender
 Male 122 951 (58.1)
 Female 88 688 (41.9)
Age group (years)
 18–25 56 355 (26.6)
 26–35 53 751 (25.4)
 36–45 69 094 (32.7)
  > 45 32439 (15.3)
ABO Blood groups
 O Type 68 247 (32.3)
 A Type 65 653 (31.0)
 B Type 57 843 (27.3)
 AB Type 19 896 (9.4)
Occupation
 Worker 38 376 (18.1)
 Student 22 683 (10.7)
 Farmer 19 016 (9.0)
 Merchant 18 636 (8.8)
 Office staff 14 441 (6.8)
 Doctor 13 189 (6.2)
 Govt. employee 12 014 (5.7)
 Teacher 8 213 (3.9)
 Soldier 1 574 (0.8)
 Others 63 497 (30.0)
  1. Note: No.=Number. For occupation, the others including housewife, freelancers and migrant labors