Characteristic

Description

Sex

(n. 67,502)

Female

Male

39,990 (59%)

27,512 (41%)

Age

(n. 67,502)

Median

54 (IQR: 37 - 70)

ASA score

1

2

3

4

5

Not known

19,567 (29%)

26,372 (39%)

10,424 (15%)

1325 (2%)

88 (0%)

9726 (14%)

Intervention class

(n. 67,502)

I―clean

II―clean-contaminated

III―contaminated

IV―dirty-infected

Not known

31,925 (47%)

24,011 (36%)

3393 (5%)

1558 (2%)

6615 (10%)

Intervention duration

(n. 65,552)

Median

60 (IQR: 35 - 110)

Infection risk index

(n. 67,502)

0 - 1

2 - 3

N.D.

34,112 (50%)

3343 (5%)

30,047 (44%)

Pre-operative hospital stay (days)

(n. 67,502)

Median

1 (IQR: 1 - 2)

Post-operative hospital stay (days)

(n. 56,430)

Median

4 (IQR: 2 - 7)

Type of intervention

(n. 67,502)

Elective

Urgent

Not known

52,224 (77%)

14,405 (21%)

873 (1%)

Intervention technique

(n. 67,502)

Classic

Not known

Videoscopic

51,054 (76%)

910 (1%)

15,538 (23%)

Perioperative antibiotic prophylaxis

(n. 23,547)

Not performed

Not known

Performed

2,100 (9%)

10,473 (44%)

10,974 (47%)