Table 2.
Demographic characteristics and testing results among blood donor population tested by serology and NAT, Georgia, January – December 2020.
| All Donors | Infectious Marker Positivity | Serology/NAT Test Concordance | |||||
|---|---|---|---|---|---|---|---|
| n (column %) | Serology or NAT Positive n (row %) | Serology and NAT Negative n (row %) | Chi-square P-Value | Serology negative/NAT Positive n (row %) | Serology and NAT Positive n (row%) | Chi-square P-Value | |
| Donations | 54,116 | 671 (1.2) | 53,445 (98.8) | – | 60 (12.3) | 427 (87.7) | – |
| Unique donors | 39,164 | 671 (1.7) | 38,493 (98.3) | – | 60 (12.3) | 427 (87.7) | – |
| Age group | |||||||
| 18–29 | 14,068 (35.9) | 118 (0.8) | 13,950 (99.2) | <0.001 | 9 (13.6) | 57 (86.4) | 0.008 |
| 30–39 | 11,909 (30.4) | 249 (2.1) | 11,660 (97.9) | 14 (7.0) | 187 (93.0) | ||
| 40–49 | 8162 (20.8) | 200 (2.5) | 7,962 (97.5) | 22 (14.6) | 129 (85.4) | ||
| 50+ | 5025 (12.8) | 104 (2.1) | 4,921 (97.9) | 15 (21.7) | 54 (78.3) | ||
| Sex | |||||||
| Female | 11,058 (28.2) | 147 (1.3) | 10,911 (98.7) | <0.001 | 20 (20.8) | 76 (79.2) | 0.005 |
| Male | 28,106 (71.8) | 524 (1.9) | 27,582 (98.1) | 40 (10.2) | 351 (89.8) | ||
| Region | |||||||
| Tbilisi | 22,838 (58.3) | 395 (1.7) | 22,443 (98.3) | <0.001 | 35 (12.4) | 247 (87.6) | <0.001 |
| Adjara | 7016 (17.9) | 138 (2.0) | 6,878 (98.0) | 11 (11.0) | 89 (89.0) | ||
| Imereti | 1588 (4.1) | 16 (1.0) | 1,572 (99.0) | 6 (42.9) | 8 (57.1) | ||
| Kvemo Kartli | 5835 (14.9) | 90 (1.5) | 5,745 (98.5) | 5 (6.6) | 71 (93.4) | ||
| Samegrelo | 589 (1.5) | 25 (4.2) | 564 (95.8) | 0 (0.0) | 9 (100.0) | ||
| Shida Kartli | 1298 (3.3) | 7 (0.5) | 1,291 (99.5) | 3 (50.0) | 3 (50.0) | ||
| Remuneration status * | |||||||
| Paid | 12,668 (32.3) | 122 (1.0) | 12,546 (99.0) | <0.001 | 27 (28.4) | 68 (71.6) | <0.001 |
| Voluntary | 20,997 (53.6) | 396 (1.9) | 20,601 (98.1) | 30 (10.6) | 252 (89.4) | ||
| Replacement | 5493 (14.0) | 153 (2.8) | 5340 (97.2) | 3 (2.7) | 107 (97.3) | ||
| Donor Status | |||||||
| First | 30,988 (79.1) | 642 (2.1) | 30,346 (97.9) | <0.001 | 47 (10.0) | 422 (90.0) | <0.001 |
| Repeat | 8176 (20.9) | 29 (0.4) | 8,147 (99.6) | 13 (72.2) | 5 (27.8) | ||
Abbreviations: HBV = hepatitis B virus; HCV = hepatitis C virus; HBsAg = HBV surface antigen; anti-HCV = antibody to HCV; anti-HIV = antibody to HIV; NAT = nucleic acid amplification test.
*
Missing values not shown.