Table 1.
Characteristics of the DBDSaCS cohort (n=6082) in comparison with the national blood donor cohort (n=234,836)
| DBDSaCSa | Blood donors not participatinga | |||
|---|---|---|---|---|
| Women | Men | Women | Men | |
| N (%) | 2683 (44.1) | 3399 (55.9) | 126,738 (54.0) | 108,098 (46.0) |
| Age, years | 36.7 (25.7–50.2) | 39.1 (28.5–50.9) | 34.6 (24.6–48.0) | 39.5 (28.0–51.1) |
| Age strata (%) | ||||
| 18–25 | 21.6 | 12.3 | 26.5 | 16.8 |
| 26–35 | 26.0 | 29.3 | 24.2 | 24.0 |
| 36–45 | 17.5 | 21.7 | 18.9 | 20.9 |
| 46–55 | 19.2 | 19.8 | 18.1 | 21.3 |
| 56–67 | 15.7 | 17.0 | 12.4 | 17.1 |
| Hemoglobin, mmol/L | 8.5 (8.2–8.8) | 9.4 (9.1–9.7) | 8.5 (8.1–8.8) | 9.4 (9.1–9.8) |
| Donations during previous: | ||||
| 1 year | 2 (2–3) | 3 (2–4) | 2 (1–3) | 2 (1–3) |
| 3 years | 5 (4–7) | 6 (4–9) | 3 (1–5) | 4 (2–7) |
| 5 years | 7 (5–10) | 9 (6–12) | 4 (2–8) | 7 (3–11) |
| Weight, kg | 70 (63–80)b | 84 (76–93)b | NA | NA |
| Height, cm | 170 (165–174)c | 183 (178–187)c | NA | NA |
| BMI, kg/m2 | 24.3 (22.1–27.5)d | 25.2 (23.3–27.4)d | NA | NA |
| Current smoker (%) | 11.8e | 12.6e | NA | NA |
| Short form-12 | ||||
| Physical Component Score | 56.6 (53.8–57.8)f | 56.6 (54.1–57.9)f | NA | NA |
| Mental Component Score | 55.1 (51.2–57.7)f | 55.8 (52.8–57.7)f | NA | NA |
Notes: Results are reported as medians (interquartile ranges) and numbers (percentages). aThe DBDSaCS cohort includes blood donors from Central Denmark Region and North Denmark Region compared with blood donors from all five regions of Denmark not participating. b=49 missing values; cn=87 missing; dn=91 missing; en=46 missing values; fn=45.
Abbreviations: DBDSaCS, the Danish Blood Donor S. aureus Carriage Study; BMI, body mass index.