Table 2 Baseline data of the study group
Variable | No antibiotic N = 66,995 | Antibiotic given N = 32,106 | Combined N = 99,101 |
|---|---|---|---|
Age: | |||
≤ 40 | 23,114 (77.5%) | 6720 (22.5%) | 29,834 |
41–60 | 27,621 (70.3%) | 11,671 (29.7%) | 39,292 |
> 60 | 16,260 (54.2%) | 13,715 (45.8%) | 29,975 |
Gender: | |||
Male | 18,775 (57.1%) | 14,081 (42.9%) | 32,856 |
Female | 48,220 (72.8%) | 18,025(27.2%) | 66,245 |
ASA: | |||
1 | 38,134 (74.8%) | 12,854 (25.2%) | 50,988 |
> 1 | 28,861 (60.0%) | 19,252 (40.0%) | 48,113 |
Indication: | |||
Uncomplicated | 49,722 (84.2%) | 9331 (15.8%) | 59,053 |
Complicated | 17,273 (43.1%) | 22,775 (56.9%) | 40,048 |
Operation method: | |||
Laparoscopic | 63,791 (73.9%) | 22,534 (26.1%) | 86,325 |
Open | 3204 (25.1%) | 9572 (74.9%) | 12,776 |
Operation time (min): | |||
< 90 | 41,010 (81.4%) | 9386 (18.6%) | 50,396 |
≥ 90 | 25,985 (53.4%) | 22,720 (46.6%) | 48,705 |
Gallbladder perforation: | |||
No | 50,878 (73.5%) | 18,329 (26.5%) | 69,207 |
Yes | 16,117 (53.9%) | 13,777(46.1%) | 29,894 |
Emergency: | |||
Elective | 56,475 (82.4%) | 12,093 (17.6%) | 68,568 |
Emergency | 10,520 (34.5%) | 20,013 (65.5%) | 30,533 |
Year: | |||
2005–2006 | 3938 (60.8%) | 2539 (39.2%) | 6477 |
2007–2015 | 63,057 (68.1%) | 29,567(31.9) | 92,624 |