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Table 2 Changes in outcomes after the intervention of SAP

From: Optimal timing of surgical antimicrobial prophylaxis in laparoscopic surgery: a before-after study

  Pre-intervention
(n = 942)
Intervention
(n = 455)
P value
SAP, n (%) 940 (99.8) 455 (100)  
SAP drip infusion time, median, (IQR) min 16 (13–20) 23 (17–30) <  0.001
Time from SAP completion to surgical incision, median, (IQR) min 8 (2–16) 26 (15–35) <  0.001
Time windows, n (%)
  > 120 min 13 (1.4) 3 (0.7) 0.18
 61–120 min 11 (1.2) 5 (1.1) 0.57
 31–60 min 56 (5.9) 161 (35.4) <  0.001
 0–30 min 702 (74.5) 278 (61.1) <  0.001
 <  0 min 158 (16.8) 8 (1.8) <  0.001
SSI, n (%) 130 (13.8) 60 (13.2) 0.80
Type of SSI, n (%)
 Superficial SSI 78 (8.3) 35 (7.7) 0.71
 Deep SSI 0 (0) 4 (0.9) N/A
 Organ-space SSI 52 (5.5) 21 (4.6) 0.48
  1. Abbreviations: SAP surgical antimicrobial prophylaxis, IQR interquartile range, SSI surgical site infection, N/A not applicable