Table 2. Blood product groups by age and sex.
| All | Female aged <50 years | Female aged ≥50 years | Male aged <50 years | Male aged ≥50 years | ||||||
| Blood product transfused | N | N (%n) | N | N (%n) | N | N (%n) | N | N (%n) | N | N (%n) |
| All | 1046 | 130 | 77 | 661 | 178 | |||||
| Whole and components | 621 (59.4) | 34 (26.2) | 44 (57.1) | 425 (64.3) | 118 (66.3) | |||||
| Components only | 425 (40.6) | 96 (73.8) | 33 (42.9) | 236 (35.7) | 60 (33.7) | |||||
| Year 1 | 182 | 16 | 19 | 115 | 32 | |||||
| Whole and components | 112 (61.5) | 0 (0.0) | 10 (52.6) | 85 (73.9) | 17 (53.1) | |||||
| Components only | 70 (38.5) | 16 (100) | 9 (47.4) | 30 (26.1) | 15 (46.9) | |||||
| P (vs female aged <50 years) | 0.0006* | <0.0001 | 0.0003 | |||||||
| Year 2 | 327 | 53 | 31 | 199 | 44 | |||||
| Whole and components | 178 (54.4) | 15 (28.3) | 14 (45.2) | 122 (61.3) | 27 (61.4) | |||||
| Components only | 149 (45.6) | 38 (71.7) | 17 (54.8) | 77 (38.7) | 17 (38.6) | |||||
| P (vs female aged <50 years) | 0.1168 | <0.0001 | 0.0011 | |||||||
| Year 3 | 355 | 37 | 15 | 233 | 70 | |||||
| Whole and components | 219 (61.7) | 13 (35.1) | 11 (73.3) | 147 (63.1) | 48 (68.6) | |||||
| Components only | 136 (38.3) | 24 (64.9) | 4 (26.7) | 86 (36.9) | 22 (31.4) | |||||
| P (vs female aged <50 years) | 0.0002 | <0.0001 | <0.0001 | |||||||
| Year 4† | 182 | 24 | 12 | 114 | 32 | |||||
| Whole and components | 112 (61.5) | 6 (25.0) | 9 (75.0) | 71 (62.3) | 26 (81.3) | |||||
| Components only | 70 (38.5) | 18 (75.0) | 3 (25.0) | 43 (37.7) | 6 (18.8) | |||||
| P (vs female aged <50 years) | 0.0041 | 0.0008 | <0.0001 | |||||||
Year 1: April 2018 to May 2019, year 2: April 2019 to May 2020, year 3: April 2020 to May 2021, year 4: May 2021 to September 2021. With the exception of females aged ≥50 years at years 2 and 4, where the proportional difference did not reach statistical significance, females aged <50 years were significantly less likely to receive LTOWB than all other groups in every year of the study. Given the seasonal nature of trauma, transfusion practices over 5 months of summer may not be directly comparable to a full year.
*
Chi-square probability values in bold are significant after a Bonferroni correction (alpha 0.05 divided by 24 tests =p < 0.0021; group comparisons excluding feamles < 50 are not listed)
†
May 2021 to September 2021, inclusive