Table 4

Presurgical variables

VariableInfection
n (%)
No infection
n (%)
RR95% CIP value
Laboratory abnormalities
Hyperglycaemia (>112 mg/ml)
 No13 (7.3)164 (92.7)1
 Yes3 (42.9)4 (57.1)5.8(2.1 to 15.9)0.015
Surgical variables
Patient's surgical scrub
 Physiological saline1 (6.7)14 (93.3)1
 Alcohol15 (8.9)154 (91.1)1.30.2 to 9.41.000
Staff’s scrub
 Chlorhexidine1 (2.6)37 (97.4)1
 Alcohol15 (10.3)131 (89.7)3.90.5 to 28.60.199
Intraoperative lavage
 No10 (8.0)115 (92.0)1
 Yes5 (8.9)51 (91.1)1.10.4 to 3.10.779
 Local1 (33.3)2 (66.7)4.10.7 to 22.90.238
Removal of hair
 Anaesthetised15 (8.4)163 (91.6)1
 Awake0 (0.0)3 (100)
 No1 (33.0)2 (66.7)3.90.7 to 21.10.244
  • Bold values significantly associated with SSI. p-value < 0.050

  • RR, risk ratio.