Table 1 Baseline of patients in no transfusion and transfusion group.
From: A novel model forecasting perioperative red blood cell transfusion
Total (n = 97,443) | No transfusion (n = 91,555) | Transfusion (n = 5888) | P-value | |
|---|---|---|---|---|
Age (years) | < 0.001 | |||
18–29 | 11,263 (11.56%) | 10,834 (11.83%) | 429 (7.29%) | |
30–49 | 28,106 (28.84%) | 26,970 (29.46%) | 1136 (19.29%) | |
50–69 | 41,475 (42.56%) | 38,930 (42.52%) | 2545 (43.22%) | |
≥ 70 | 16,599 (17.03%) | 14,821 (16.19%) | 1778 (30.20%) | |
Gender | < 0.001 | |||
Female | 50,632 (51.96%) | 47,343 (51.71%) | 3289 (55.86%) | |
Male | 46,811 (48.04%) | 44,212 (48.29%) | 2599 (44.14%) | |
Race | < 0.001 | |||
Chinese | 69,485 (71.31%) | 65,130 (71.14%) | 4355 (73.96%) | |
Malay | 9826 (10.08%) | 9252 (10.11%) | 574 (9.75%) | |
Indian | 8621 (8.85%) | 8263 (9.03%) | 358 (6.08%) | |
Others | 9494 (9.74%) | 8895 (9.72%) | 599 (10.17%) | |
ASA-PS | < 0.001 | |||
ASA 1 | 22,147 (22.73%) | 21,558 (23.55%) | 589 (10.00%) | |
ASA 2 | 50,252 (51.57%) | 47,910 (52.33%) | 2342 (39.78%) | |
ASA 3 | 17,793 (18.26%) | 15,583 (17.02%) | 2210 (37.53%) | |
ASA 4–6 | 2150 (2.21%) | 1691 (1.85%) | 459 (7.80%) | |
Cerebrovascular accidents | < 0.001 | |||
No | 65,097 (66.81%) | 61,194 (66.84%) | 3903 (66.29%) | |
Yes | 1811 (1.86%) | 1614 (1.76%) | 197 (3.35%) | |
Ischemic heart disease | < 0.001 | |||
No | 59,953 (61.53%) | 56,572 (61.79%) | 3381 (57.42%) | |
Yes | 6712 (6.89%) | 6008 (6.56%) | 704 (11.96%) | |
Congestive heart failure | < 0.001 | |||
No | 67,619 (69.39%) | 63,568 (69.43%) | 4051 (68.80%) | |
Yes | 1413 (1.45%) | 1233 (1.35%) | 180 (3.06%) | |
Diabetes mellitus on insulin | < 0.001 | |||
No | 66,012 (67.74%) | 62,083 (67.81%) | 3929 (66.73%) | |
Yes | 2329 (2.39%) | 2076 (2.27%) | 253 (4.30%) | |
Grade of kidney disease | < 0.001 | |||
G1 | 50,276 (51.60%) | 47,496 (51.88%) | 2780 (47.21%) | |
G2 | 25,640 (26.31%) | 24,263 (26.50%) | 1377 (23.39%) | |
G3 | 5850 (6.00%) | 5159 (5.63%) | 691 (11.74%) | |
G4–5 | 3477 (3.57%) | 2972 (3.25%) | 505 (8.58%) | |
Type of anesthesia | < 0.001 | |||
General anesthesia | 83,100 (85.28%) | 77,769 (84.94%) | 5331 (90.54%) | |
Regional/spinal anesthesia | 14,343 (14.72%) | 13,786 (15.06%) | 557 (9.46%) | |
Priority of surgery | < 0.001 | |||
Elective | 78,161 (80.21%) | 73,788 (80.59%) | 4373 (74.27%) | |
Emergency | 19,282 (19.79%) | 17,767 (19.41%) | 1515 (25.73%) | |
Surgery risk | < 0.001 | |||
Low | 48,002 (49.26%) | 47,350 (51.72%) | 652 (11.07%) | |
Moderate | 39,724 (40.77%) | 36,261 (39.61%) | 3463 (58.81%) | |
High | 4626 (4.75%) | 3364 (3.67%) | 1262 (21.43%) | |
Anaemia | < 0.001 | |||
None | 67,099 (68.86%) | 65,338 (71.36%) | 1761 (29.91%) | |
Mild | 14,189 (14.56%) | 13,103 (14.31%) | 1086 (18.44%) | |
Moderate/severe | 11,597 (11.90%) | 8698 (9.50%) | 2899 (49.24%) | |
MCV | < 0.001 | |||
80–100 normocytosis | 78,501 (80.56%) | 74,358 (81.22%) | 4143 (70.36%) | |
< 80 microcytosis | 9840 (10.10%) | 8675 (9.48%) | 1165 (19.79%) | |
> 100 macrocytosis | 1369 (1.40%) | 1194 (1.30%) | 175 (2.97%) | |
RDW | < 0.001 | |||
≤ 15.7 | 80,695 (82.81%) | 76,906 (84.00%) | 3789 (64.35%) | |
> 15.7 | 8994 (9.23%) | 7301 (7.97%) | 1693 (28.75%) |
