Table 2 ABO blood group distribution and donor characteristics

Blood group

A+

15

9.09 (5.53–14.6)

B+

13

7.88 (4.60–13.2)

O-

13

7.88 (4.60–13.2)

O+

124

75.2 (67.9–81.2)

Type of donor

Family

65

39.4 (32.2–47.1)

Paid

61

37.0 (29.9–44.7)

Voluntary

39

23.6 (17.7–30.8)

Number of previous donations in the last one year

First time

51

30.9 (24.3–38.4)

once

23

13.9 (9.40–20.2)

Twice

16

9.70 (6.00–15.3)

≥ 3

32

19.4 (14.0–26.2)

Life time

43

26.1 (19.9–33.4)