Table 2.
Convalescent plasma donor’s characteristics.
| Independent variable | ELISA IgG positive result (ratio ≥1.1) | ELISA IgG negative result (ratio<0.8) | Total donors | Missing data | P Value |
|---|---|---|---|---|---|
| age (years) - median (IQR) | 40(14) | 39(16) | 40(13) | 1711 (20.8 %) | P<0.0001 |
| Gender – no. (%) | 2030 (24.7 %) | P<0.05 | |||
| male | 5113 (92.7 %) | 599 (90.6 %) | 5712 (92.5 %) | ||
| female | 402 (86.6 %) | 62 (13.4 %) | 464 (7.5 %) | ||
| The location of donors in terms of the prevalence of SARS-CoV-2- no. (%) | 1466 (17.9 %) | P > 0.05 | |||
| Red | 3648 (60.8 %) | 429 (58.1 %) | 4077 (60.5 %) | ||
| Orange | 1497 (24.9 %) | 213 (28.9 %) | 1710 (25.4 %) | ||
| Yellow | 857 (14.3 %) | 96 (13.0 %) | 953 (14.1 %) | ||
| Donation history- no. (%) | 2121 (25.8 %) | P > 0.05 | |||
| First donation | 5062 (93.2 %) | 598 (91.9 %) | 5660 (93.0 %) | ||
| Return | 372 (6.8 %) | 53 (8.1 %) | 425 (7.0 %) | ||
| Ethnicity- no. (%) | 1731 (21.1 %) | P<0.0001 | |||
| Persians | 3521 (61.2 %) | 404 (55.7 %) | 3925 (60.6 %) | ||
| Azeris | 1189 (20.7 %) | 182 (25.1 %) | 1371 (21.2 %) | ||
| Turkmens | 251 (4.4 %) | 5 (0.7 %) | 256 (4.0 %) | ||
| Gilaks | 42 (0.7 %) | 15 (2.1 %) | 57 (0.9 %) | ||
| Arabs | 523 (9.1 %) | 101 (13.9 %) | 624 (9.6 %) | ||
| Baluchs | 224 (3.9 %) | 18 (2.5 %) | 242 (3.7 %) | ||
| Length of hospitalization (days) - median (IQR) | 2.74 – 0(5) | 3.01 – 0(6) | 2.47 – 0(5) | 7206 (87.8 %) | P > 0.05 |
| Chest CT, positive result- no. (%) | 60(11.8 %) | 5(9.1 %) | 65(11.5 %) | 7633 (93.0 %) | P > 0.05 |
| Blood types – no. (%) | 2149 (26.2 %) | P<0.01 | |||
| A | 1837(33.9 %) | 203(31.6 %) | 2040(33.7 %) | ||
| B | 1338(24.7 %) | 147(22.9 %) | 1485(24.5 %) | ||
| AB | 487(9.0 %) | 38(5.9 %) | 57(8.7 %) | ||
| O | 1753(32.4 %) | 254(39.6 %) | 2007(33.1 %) | ||
| Rh- no. (%) | 2149 (26.2 %) | P > 0.05 | |||
| Positive | 4930(91.0 %) | 575(89.6 %) | 5505(90.9 %) | ||
| Negative | 485(87.9 %) | 67(12.1 %) | 552(9.1 %) | ||
| Donation type- no. (%) | 2127 (25.9 %) | NA | |||
| Recovered | 352(6.5 %) | 63(9.6 %) | 415(6.8 %) | ||
| Source | 5071(93.5 %) | 593(90.4 %) | 5664(93.2 %) | ||
| Type of CCP- no. (%) | 2339 (28.5 %) | P<0.0001 | |||
| Therapeutic | 5140 (87.66 %) | ||||
| Nulliparous female with positive rapid test | 187 (4.03 %) | 28 (5.6 %) | 215(4.18 %) | ||
| Men with positive rapid test | 4453 (95.97 %) | 472 (94.4 %) | 4925(95.82 %) | ||
| Nontherapeutic | 723 (12.34 %) | ||||
| ever-parous women/Nulliparous female with negative rapid test | 135 (22.88 %) | 24 (18.04 %) | 159(22.0 %) | ||
| Men with negative rapid test | 455 (77.12 %) | 109 (81.96 %) | 564(78.0 %) |
NA: Not applicable.