Table 8

Postoperative variables

VariableInfection
n (%)
No infection
n (%)
RR95% CIP value
Antibiotic therapy
 Not recommended and unmanaged3 (5.2)55 (94.8)1
 Recommended and administered10 (10.1)89 (89.9)1.90.6 to 6.80.375
 Not recommended and administered3 (11.1)24 (88.9)2.10.5 to 10.00.377
 Recommended and unmanaged0 (0.0)0 (0.0)
Transfusion
 No14 (7.8)165 (92.2)1
 Yes2 (40.0)3 (60.0)5.11.6 to 16.70.061
Albumin
 No16 (8.7)167 (91.3)
 Yes0 (0.0)1 (100)
Packed red cells
 No15 (8.3)166 (91.7)1
 Yes1 (33.3)2 (66.7)4.00.8 to 21.40.240
Plasma
 No16 (8.7)167 (91.3)
 Yes0 (0.0)1 (100)
Whole blood
 No15 (8.2)168 (91.8)
 Yes1 (100)0 (0.0)
Catheter (other than intravenous)
 No12 (7.4)150 (92.6)1
 Yes4 (18.2)18 (81.8)2.50.9 to 6.90.106
Urinary catheterisation
 No12 (7.1)156 (92.9)1
 Yes4 (25.0)12 (75.0)3.51.3 to 9.60.037
Feeding tube
 No16 (9.1)160 (90.9)
 Yes0 (0.0)8 (100)
Elizabethan collar
 Yes4 (8.9)41 (91.1)1
 No9 (32.1)19 (67.9)3.61.2 to 10.60.025
Hospital stayInfectionNo infectionMD95% CIP value
Hospital stay*2.0 (3.3)1.6 (2.5)0.4−0.9 to 1.70.459
Hospital stay presurgical*0.3 (0.9)0.4 (1.1)0.1−0.6 to 0.50.885
Hospital stay postsurgical*1.7 (2.6)1.9 (0.2)0.4−0.6 to 1.40.331
  • Bold values significantly associated with SSI. p-value < 0.050.

  • *Data are expressed as mean (sd) and mean difference.

  • MD, mean difference; RR, risk ratio.