Table 3.
Serological Pattern by Demographic Characteristics among 1st time Donors
| Characteristics | Serological pattern |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| Confirmed Positive Chagas (CP) | Probable Positive Chagas (PP) | Possible Other Parasitic Infection (POPI) | False Positives (FP) | ||||||
| N (Donations) | 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) | |
| Overall | 186970 | 213 | 114 (99 – 129) | 49 | 26 (19 – 34) | 18 | 10 (5 – 14) | 179 | 96 (82 – 110) |
| Age | |||||||||
| age <25 | 73596 | 11 | 15 (6 –24)* | 6 | 8 (2 – 15)* | 4 | 5 (0 – 11) | 64 | 87 (66 – 108) |
| age ≥ 25 – <35 | 61857 | 45 | 73 (52 –94) | 15 | 24 (12 – 37) | 8 | 13 (4 – 22) | 53 | 86 (63 – 109) |
| age ≥ 35 – <45 | 31329 | 67 | 214 (163 – 265) | 15 | 48 (24 – 72) | 3 | 10 (0 – 20) | 38 | 121 (83 – 160) |
| age ≥ 45 – <55 | 15761 | 57 | 362 (268 –455) | 10 | 63 (24 – 103) | 2 | 13 (0 – 30) | 19 | 121 (66 – 175) |
| age ≥ 55 | 4363 | 33 | 756 (499 – 1013) | 3 | 69 (0 – 147) | 1 | 23 (0 – 68) | 5 | 115 (14 – 215) |
| Gender | |||||||||
| Female | 73630 | 87 | 118 (93 – 143) | 21 | 29 (16 – 41) | 3 | 4 (0 – 9)* | 56 | 76 (56 – 96) |
| Male | 113340 | 126 | 111 (92 – 131) | 28 | 25 (16 – 34) | 15 | 13 (7 – 20) | 123 | 109 (89 – 128) |
| Education | |||||||||
| < High School | 12817 | 60 | 468 (350 – 586)* | 11 | 86 (35 – 137)* | 2 | 16 (0 – 37) | 9 | 70 (24 – 116) |
| High School | 16913 | 39 | 231 (158– 303) | 6 | 35 (7 – 64) | 2 | 12 (0 – 28) | 15 | 89 (44 – 134) |
| Complete 3 of College | 62486 | 29 | 46 (30 – 63) | 6 | 10 (2 – 17) | 2 | 3 (0 – 8) | 33 | 53 (35 – 71) |
| College + | 15566 | 3 | 19 (0 – 41) | -- | -- | 1 | 6 (0 – 19) | 11 | 71 (29 – 112) |
| Type of Donation | |||||||||
| Community | 100092 | 105 | 105 (85 – 125) | 22 | 22 (13 – 31) | 10 | 10 (4 – 16) | 85 | 85 (67 – 103) |
| Replacement | 86843 | 108 | 124 (101 – 148) | 27 | 31 (19 – 43) | 8 | 9 (3 – 16) | 94 | 108 (86 – 130) |
| Location | |||||||||
| Recife | 57921 | 27 | 47 (29 – 64)* | 8 | 14 (4 – 23)* | 8 | 14 (4 – 23) | 26 | 45 (28 – 62) |
| Belo Horizonte | 43871 | 45 | 103 (73 – 133) | 7 | 16 (4 – 28) | 5 | 11 (1 – 21) | 87 | 198 (157 – 240) |
| Sao Paulo | 85178 | 141 | 166 (138 – 193) | 34 | 40 (27 – 53) | 5 | 6 (1 – 11) | 66 | 77 (59 – 96) |
95%CI: 95% Confidence Interval
*
p-value < 0.05