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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Transfusion. 2010 Dec;50(12):2628–2637. doi: 10.1111/j.1537-2995.2010.02756.x

Table 2.

Serological Pattern by Location among All Donors

Classification Blood Center Region
Recife Belo Horizonte Sao Paulo Total
Total donations n = 204,124 Total donations n = 139,429 Total donations n = 271,880 Total donations n = 615,433
N (Positive) Prevalence/100,000 donations (95%CI) N (Positive) Prevalence/100,000 donations (95%CI) N (Positive) Prevalence/100,000 donations (95%CI) N (Positive) Prevalence/100,000 donations (95%CI) p-value*
CP 31 15 (10 –21) 46 34 (24 – 43 141 52 (44 – 61) 218 36 (31 – 41) < 0.001
PP 10 5 (2 – 8) 13 9 (4 – 15) 37 14 (9 – 18) 60 10 (7 – 12) 0.011
POPI 19 9 (5 – 14) 12 9 (4 – 14) 13 5 (2 – 7) 44 7 (5 – 9) 0.136
FP 74 37 (28 – 45) 250 183 (160 – 205) 165 61 (52– 70) 489 80 (73 – 87) < 0.001
Total 134 N/A 321 N/A 356 N/A 811 N/A N/A
PP/CP, ratio 0.32 0.28 0.26 0.28 =0.876
POPI/CP, ratio 0.61 0.26 0.09 0.20 <0.001

95%CI: 95% Confidence Interval

*

p-value for chi-square statistics comparing the Recife, Belo Horizonte and Sao Paulo blood centers

**

N/A: Not Applicable