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Table 1 Baseline characteristics of patients who underwent laparoscopic surgery in the study period (n = 1397)

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

  Pre-intervention
(n = 942)
Intervention
(n = 455)
P value
Age, median, (IQR) years 66 (52–75) 68 (55–76) 0.04
Male gender, n (%) 431 (56.4) 260 (57.1) 0.79
Co-morbidities, n (%)
 Diabetes mellitus 129 (13.7) 63 (13.8) 0.94
 Chronic lung diseases 42 (4.5) 27 (5.9) 0.23
 Cardiovascular diseases 37 (3.9) 32 (7.0) 0.01
 Hypertension 333 (35.4) 180 (39.6) 0.14
 Dyslipidemia 158 (16.8) 73 (16.0) 0.76
Current smoker, n (%) 446 (47.4) 224 (49.2) 0.51
ASA score, n (%)
 1 no disturbance 207 (22.0) 72 (15.8) Ref.
 2 mild disturbance 654 (69.4) 344 (75.6) 0.01
 3 severe disturbance 79 (8.4) 37 (8.1) 0.22
 4 life-threatening 2 (0.2) 2 (0.4) 0.30
Wound class, n (%)
 2 clean-contaminated 936 (99.4) 454 (99.8) 0.44
 3 contaminated 6 (0.6) 1 (0.2) 0.44
Emergent operation, n (%) 152 (16.1) 70 (15.4) 0.72
Type of surgery, n (%)
 Gastrectomy 242 (25.7) 129 (28.4) 0.29
 Cholecystectomy 213 (22.6) 94 (20.7) 0.41
 Appendectomy 125 (13.3) 32 (7.0) 0.001
 Colectomy 130 (13.8) 70 (15.4) 0.43
 Proctectomy 231 (24.5) 130 (28.6) 0.11
 Cholecystectomy and appendectomy 1 (0.1) 0 (0) N/A
Operation time, median, (IQR) min 213 (133–286) 222 (145–322) 0.003
  1. Abbreviations: IQR interquartile range, ASA American Society of Anesthesiologists, N/A not applicable