Table 2

UTI rate of patients who underwent posterior spine fusion and who either had or did not have RFs.

Levels FusedRF Within 1 y, n (%)No RF, n (%)OR P
<7 Levels Fused
 n 3851188--
 UTI contracted within:
  7 d<11<11--
  1 mo13 (3.4)15 (1.3)2.730.01
  2 mo17 (4.4)21 (1.8)2.560.006
  3 mo21 (5.5)28 (2.4)2.40.004
7–12 Levels Fused
 n 3911170--
 UTI contracted within:
  7 d<11<11--
  1 mo<1116 (1.4)--
  2 mo11 (2.8)20 (1.7)1.660.03
  3 mo15 (3.8)23 (2.0)2.00.01
12 Levels Fused
 n 3621196--
 UTI contracted within:
  7 d<11<11--
  1 mo16 (4.4)20 (1.7)2.70.004
  2 mo21 (5.8)26 (2.2)2.8<0.001
  3 mo23 (6.4)33 (2.8)2.40.002

  • Abbreviations: RF, risk factor; UTI, urinary tract infection.