TABLE 2.
Risk of infection comparing LRS to non‐LRS donations, given donation history between 1 and 11 y previously as categorical variables
| Events/person‐years; IR per 1000 person‐years | ||||
|---|---|---|---|---|
| Apheresis donations a | <10% LRS donations | 10%‐90% LRS donations | >90% LRS donations | HR 100% vs 0% LRS (95% CI) b |
| Immunosuppression‐related infections | ||||
| 0 | 134/332 877; 0.40 | NA | ||
| 1‐10 | 96/460 342; 0.21 | 0/6736; 0.00 | 7/21 388; 0.33 | 1.4 (0.6‐3.5) |
| 11‐50 | 75/256 338; 0.29 | 5/9474; 0.53 | 4/7580; 0.53 | 2.1 (0.7‐6.3) |
| 51‐237 | 14/50 198; 0.28 | 0/2924; 0.00 | 0/1136; 0.00 | NA |
| Common bacterial infections | ||||
| 0 | 1524/319 463; 4.8 | NA | ||
| 1‐10 | 1520/452 648; 3.4 | 22/6566; 3.4 | 86/20 922; 4.1 | 1.0 (0.8‐1.3) |
| 11‐50 | 819/252 018; 3.3 | 30/9217; 3.3 | 29/7379; 3.9 | 1.1 (0.8‐1.7) |
| 51‐237 | 152/49 337; 3.1 | 16/2838; 5.6 | 5/1093; 4.6 | 2.5 (1.2‐4.9) |
Abbreviation: IR, incidence rate; NA, not applicable.
a
Apheresis donations between 1 and 11 y previously.
b
Adjusted for age, sex, age and sex interaction, geographical region, and calendar year.