Table 1 Characteristics of surgical interventions during the three periods (n = 417,233)
Missing | Period 1 | Period 2 | Period 3 | p value | |
|---|---|---|---|---|---|
Number of surgeries | 157,783 | 113,570 | 145,880 | ||
Mean age, year | 4 (< 0.00%) | 58.1 | 57.7 | 58.7 | < 0.001a |
Sex, n (%) | 1485 (0.36%) | 0.12b | |||
Female | 88,989 (56.5) | 63,003 (56.1) | 82,041(56.3) | ||
Male | 68,602(43.5) | 49,362 (43.9) | 63,751 (43.7) | ||
ASA 1 | 80,423 (19.3%) | 33,856 (25.8) | 22,152 (24.4) | 27,527 (24.1) | < 0.001c |
ASA 2 | 61,583 (46.9) | 40,887 (44.9) | 52,402 (45.8) | ||
ASA 3 | 32,131 (24.4) | 24,364 (26.8) | 30,287 (26.5) | ||
ASA 4 | 3715 (2.8) | 3440 (3.8) | 4044 (3.5) | ||
ASA 5 | 101 (0.1) | 96 (0.1) | 118 (0.1) | ||
ASA 6 | 40 (0.0) | 29 (0.0) | 38 (0.0) | ||
Acute surgery, n (%) | 331 (<0.1%) | 47,080 (29.8) | 46,228 (40.7) | 50,742 (34.9) | < 0.001b |
Elective surgery, n (%) | 110,702 (70.2) | 67,333 (59.3) | 94,817 (65.1) | ||
Surgery duration, mean, h:min:sec | 0 | 1:11:23 | 1:14:00 | 1:12:08 | < 0.001a |