Table 2 Frequencies of SSI^§ according to type of intervention and NNIS^§§ index category.

Breast surgery

406

13 (3.2%)

-

10/281 (3.5%)

2/111 (1.8%)

1/10 (10%)

Cesarean section

1012

27 (2.6%)

-

20/775 (2.6%)

6/218 (2.7%)

0/8 (0%)

Cholecistectomy

740

30 (4%)

4/287 (1.4%)

11/236 (4.6%)

9/145 (6.2%)

4/59 (6.7%)

Gastric surgery

147

20 (13.6%)

1/3 (33.3%)

3/50 (6%)

1/63 (1.6%)

4/23 (17.4%)

Appendectomy

221

19 (8.6%)

0/16 (0%)

1/108 (0.9%)

13/76 (17.1%)

3/18 (16.6%)

Colon surgery

338

64 (18.9%)

2/4 (50%)

14/70 (20%)

24/151 (15.9%)

22/109 (20.2%)

Hernia repair

1014

41 (4%)

1/19 (5.3%)

20/641 (3.1%)

15/283 (5.3%)

4/46 (8.7%)

Abdominal hysterectomy

346

21 (6.1%)

1/12 (8.3%)

7/217 (3.2%)

11/91 (12.1%)

1/20 (5%)

Vaginal hysterectomy

162

6 (3.7%)

-

3/117 (2.5%)

3/41 (7.3%)

0/2 (0%)