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. 2016 Jul 5;1(4):96–105. doi: 10.1002/lio2.27

Table 2.

Unadjusted and Adjusted Cox's Proportional Hazard Models for Variables Analyzed Fitted for Need for Revision Sinus Surgery and/or Nasal Polypectomy During Follow‐up of Average 9 Years.

Revision Sinus Surgery and/or Polypectomy
Univariate Multivariable
Events (23) HR 95% CI P Value HR 95% CI P Value
Gender
Male 9 1 Not entered
Female 14 1.54 0.67–3.56 .31
Age
< 40 years 8 1 Not entered
≥ 40 years 15 0.77 0.33–1.82 .56
Allergic rhinitis
No 8 1 1
Yes 15 2.86 1.21–6.76 .017 3.97 1.34–11.73 .013
Asthma
No 12 1 Not entered
Yes 11 1.71 0.76–3.88 .20
AERD
No 16 1 1
Yes 7 3.37 1.38–8.23 .008 0.34 0.076–1.48 .15
Previous and/or current nasal polyps
No or ACP1 7 1 Not entered
Yes 16 2.31 0.94–5.68 .07
Recurrent nasal polyps
No 16 1 1
Yes 7 5.08 2.07–12.45 < .001 5.77 1.37–24.3 .017
Smokers
No 21 1 Not entered
Yes 2 0.34 0.08–1.45 .15
Need for regular intranasal corticosteroid
No 4 1 1
Yes 19 6.63 2.26–19.49 .001 4.64 1.47–14.68 .009
Preoperative peroral corticosteroid
No 16 1 1
Yes 6 5.13 2.00–13.15 .001 9.27 1.89–45.40 .006
Previous sinus surgery and/or nasal polypectomy
No 11 1 1
Yes 12 5.06 2.23–11.49 <.001 2.50 0.60–10.36 .21
Ethmoidectomy performed as a part of current surgery
No 9 1 1
Yes 14 2.70 1.17–6.27 .021 0.48 0.13–1.80 .28

The six variables that entered the adjusted Cox's proportional hazard were chosen from those that were statistically significant variables in unadjusted Cox's proportional hazard models.

1When removing ACP from the analysis, the result remained similar.

ACP = antrochoanal polyp; AERD = aspirin‐exacerbated respiratory disease; CI = confidential interval; HR = hazard ratio.