Table 4: Association of surgery characteristics with SSI in patients with VPS.

Surgery characteristics

Surgical Site Infection

 

Yes

No

Total

p-value

Potential contamination

 

 

 

 

Clean

43 (62.3)

244 (66.1)

287 (65.5)

ref.

Potentially contaminated

15 (21.7)

68 (18.4)

83 (18.9)

0.495

Contaminated

6 (8.7)

35 (9.5)

41 (9.4)

0.953

Infected*

5 (7.2)

22 (6.0)

27 (6.2)

0.581

Hospitalization/preoperative > 24 h

54 (78.3)

269 (72.9)

323 (73.7)

0.353

Trichotomy

37 (92.5)

232 (87.9)

269 (88.5)

0.594

Preoperative bathing

43 (62.3)

149 (42.3)

199 (87.3)

0.005

On the night prior to surgery

3 (7.0)

18 (11.5)

21 (10.6)

ref.

On the day of surgery*

40 (93.0)

138 (88.5)

178 (89.4)

0.576

Antimicrobial prophylaxis

54 (78.3)

290 (78.6)

344 (78.5)

0.951

Indication of VPS surgery

 

 

 

 

First implantation

30 (43.5)

181 (49.1)

211 (48.2)

0.447

Revision

17 (24.6)

97 (26.3)

114 (26.0)

 

Reimplantation

22 (31.9)

91 (24.7)

113 (25.8)

 

VPS dysfunction

47 (95.9)

110 (79.1)

157 (83.5)

0.006

*Fisher’s exact test was used for the statistical analysis.