Table 2 Baseline patient characteristics stratified by the concordance of ASA classes given by surgeons and anesthesiologists.
Overall (n = 46,284) | Concordant ASA class (n = 31,186) | Discordant ASA class (n = 15,098) | p value1 | Surgeon ASA lower (n = 11,985) | p value2 | Anesthesiologist ASA class lower (n = 3113) | p value3 | |
|---|---|---|---|---|---|---|---|---|
Male sex, no. (%) | 21,474 (46.4) | 14,312 (46.0) | 7162 (47.4) | 0.0002 | 5670 (47.3) | 0.0072 | 1492 (47.9) | 0.031 |
Age (time of surgery), mean (SD) | 58.0 (16.0) | 59.0 (16.0) | 56.0 (17.0) | < 0.0001 | 56.0 (17.0) | < 0.0001 | 54.0 (16.0) | < 0.0001 |
Race, no. (%) | ||||||||
Chinese | 34,560 (74.7) | 23,814 (76.4) | 10,746 (71.2) | < 0.0001 | 8463 (70.6) | < 0.0001 | 2283 (73.3) | < 0.0001 |
Indian | 4459 (9.6) | 2793 (9.0) | 1666 (11.0) | 1336 (11.2) | 330 (10.6) | |||
Malay | 4111 (8.9) | 2558 (8.2) | 1553 (10.3) | 1306 (10.9) | 247 (7.9) | |||
Others | 3154 (6.8) | 2021 (6.5) | 1133 (7.5) | 880 (7.3) | 253 (8.1) | |||
Creatinine > 2 mg/dl, no. (%) | 2281 (4.9) | 1507 (4.8) | 774 (5.1) | 0.18 | 722 (6.0) | < 0.0001 | 52 (1.7) | < 0.0001 |
Diabetes mellitus on Insulin, no. (%) | 1750 (3.8) | 1025 (3.3) | 725 (4.8) | < 0.0001 | 681 (5.7) | < 0.0001 | 44 (1.4) | < 0.0001 |
History of Congestive heart failure, no. (%) | 1065 (2.3) | 608 (2.0) | 457 (3.0) | < 0.0001 | 432 (3.6) | < 0.0001 | 25 (0.8) | < 0.0001 |
History of Cerebrovascular accident, no. (%) | 1529 (3.3) | 799 (2.7) | 730 (4.8) | < 0.0001 | 683 (5.7) | < 0.0001 | 47 (1.5) | 0.00039 |
History of Ischemic heart disease, no. (%) | 4635 (10.0) | 2500 (8.0) | 2135 (14.1) | < 0.0001 | 1970 (16.4) | < 0.0001 | 165 (5.3) | < 0.0001 |
History of Hypertension, no. (%) | 19,225 (41.5) | 13,591 (43.6) | 5634 (37.3) | < 0.0001 | 5070 (42.3) | 0.021 | 564 (18.1) | < 0.0001 |
History of Smoking, no. (%) | 4327 (9.4) | 2672 (8.6) | 1655 (11.0) | < 0.0001 | 1434 (12.0) | < 0.0001 | 221 (7.1) | 0.0055 |
Surgical specialty, no. (%) | ||||||||
Orthopedics | 14,523 (31.4) | 10,472 (33.6) | 4051 (26.8) | < 0.0001 | 2958 (24.7) | < 0.0001 | 1093 (35.1) | < 0.0001 |
General surgery | 11,294 (24.4) | 7501 (24.1) | 3793 (25.1) | 3062 (25.6) | 731 (23.5) | |||
Urology | 6403 (13.8) | 4472 (14.3) | 1931 (12.8) | 1503 (12.5) | 428 (13.8) | |||
Obstetrics and gynecology | 4799 (10.4) | 2803 (9.0) | 1996 (13.2) | 1826 (15.2) | 170 (5.7) | |||
Otorhinolaryngology | 2844 (6.1) | 1817 (5.8) | 1027 (6.8) | 876 (7.3) | 151 (4.9) | |||
Vascular | 2146 (4.6) | 1418 (4.6) | 728 (4.8) | 582 (4.9) | 146 (4.7) | |||
Plastics | 1468 (3.2) | 942 (3.0) | 526 (3.5) | 388 (3.2) | 138 (4.4) | |||
Neurosurgery | 730 (1.6) | 399 (1.3) | 331 (2.2) | 231 (1.9) | 100 (3.2) | |||
Others | 2077 (4.5) | 1362 (4.4) | 715 (4.7) | 559 (4.7) | 156 (5.01) | |||
