Table 1 Patient characteristics and perioperative outcome.

From: Drug resistant bacteria in perianal abscesses are frequent and relevant

Variable

No_Swab-group

n = 456

Swab-groups

p-value

DR(−)

n = 141

DR(+)

n = 220

Male gender

324 (71.1%)

107 (75.9%)

176 (80.0%)

0.0398

Age (years)

44.0 ± 14.4a

40.6 ± 14.6a

43.4 ± 16.8

0.0346

Body mass index (kg/m2)

28.2 ± 6.6

27.4 ± 7.1

27.7 ± 7.5

0.0525

Diabetes mellitus

31 (6.8%)

6 (4.3%)

26 (11.8%)

0.0173

Active smoking

148 (32.5%)

64 (45.4%)

69 (31.4%)

0.0100

Chronic pulmonal disease

30 (6.6%)

8 (5.7%)

24 (10.9%)

0.0881

Coronary artery disease

16 (14.4%)

3 (2.1%)

11 (5.0%)

0.3531

Arterial hypertension

95 (20.8%)

24 (17.0%)

51 (23.2%)

0.3717

CIBD

48 (10.5%)

9 (6.4%)

21 (9.5%)

0.3428

Systemic Immunsuppressionb

15 (3.3%)

6 (4.3%)

21 (9.5%)

0.0023

Surgery ≤ 12 h after initial presentation

260 (57.0%)

102 (72.3%)

151 (68.6%)

0.0005

Supralevatoric or pararectal abscess

9 (2.0%)

5 (3.5%)

15 (6.8%)

0.0062

Gangrenous tissue infectionc

0

1 (0.7%)

13 (5.9%)

< 0.0001

Detection of fistula during index surgery

316 (69.3%)

70 (49.6%)

120 (54.5%)

< 0.0001

    Primary fistula drainage

215 (68.0%)

58 (82.9%)

105 (87.5%)

< 0.0001

    Primary fistulectomy

101 (32.0%)

12 (17.1%)

15 (12.5%)

Stool deviation/Stoma rate

3 (0.7%)

1 (0.7%)

13 (5.9%)

< 0.0001

Postoperative antibiotic therapy

71 (15.6%)

46 (32.6%)

87 (39.5%)

< 0.0001

Change of antibiotic therapies

0

3 (2.1%)

9 (4.1%)

0.0001

Postoperative intensive care

4 (0.9%)

0

11 (5.0%)

0.0002

Re-do surgery (short-term follow-up)

13 (2.9%)

9 (6.4%)

24 (10.9%)

0.0001

Overall recurrencyd

91 (20.0%)

26 (18.4%)

40 (18.2%)

0.8323

30 day mortality

0

0

2 (0.9%)

0.0659

  1. aIndicates significant differences between the groups in Dunn’s multiple comparison. bIncluding chemotherapy within 8 weeks before abscess surgery. cAt index surgery or re-do surgery. dOverall recurrence includes patients with recurrent perianal abscess in long-term follow-up after index surgery or perianal abscess in the patient’s history. CIBD Chronic inflammatory bowel disease.