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Table 1 Demographic variables and patients characteristics before and after intervention

From: Antibiotic appropriateness and adherence to local guidelines in perioperative prophylaxis: results from an antimicrobial stewardship intervention

Variable Total sample Baseline Post-intervention
Cases, n 789 (100) 407 (51.6) 382 (48.4)
Age, mean (SD) year 56.7 (17.8) 52.5 (18.5) 61.2 (16)
Females, n (%) 465 (58.9) 237 (58.3) 229 (60.1)
Reported allergy to beta-lactams, n (%) 15 (1.9) 6 (1.4) 9 (2.3)
Surgical procedure, n (%)
 Cardiac surgery 61 (7.7) 14 (3.4) 47 (12.3)
 Digestive surgery 95 (12.0) 35 (8.6) 60 (15.7)
 Endocrine surgery 78 (9.9) 61 (15.0) 17 (4.5)
 Vertebral surgery 8 (1) 5 (1.2) 3 (8)
 Hepato–pancreato–biliary surgery 19 (2.4) 15 (3.7) 4 (1)
 Gynecologic surgery 128 (16.2) 74 (18.2) 54 (14.1)
 Neurosurgery 81 (10.3) 28 (6.9) 53 (13.9)
 Ear–nose–throat surgery 104 (13.2) 57 (14.0) 47 (12.3)
 Orthopedic surgery 116 (14.7) 72 (17.7) 44 (11.5)
 Urology 99 (12.5) 46 (11.3) 53 (13.9)
Surgical wound class, n (%)
 Clean 488 (61.9) 242 (59.5) 246 (64.4)
 Clean-contaminated 197 (25) 140 (34.4) 57 (14.9)
 Contaminated 85 (10.8) 21 (5.2) 64 (16.8)
 Dirty 19 (2.5) 4 (1) 15 (3.9)