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. 2011 Jun 9;140(6):1557–1566. doi: 10.1378/chest.10-2914

Table 5.

—Multivariate Hierarchical Logistic Regression Model for Diagnostic Yield Per Patient

All Patients (n = 891)
Patients With PET Scans (n = 379)
Variable OR 95% CI P Value OR 95% CI P Value
Hospital volume 1.003 1.000-1.006 .037 1.003 0.999-1.007 .14
Sex: male vs female 0.72 0.5-1.05 .08 0.75 0.42-1.35 .26
Smoking status: smoker vs never smoker 1.55 1.02-2.34 .042 1.59 0.79-3.18 .15
Number of LN sites: > 2 vs ≤ 1 0.57 0.38-0.85 .015 0.55 0.3-1.04 .06
On-site cytologic evaluation: yes vs no 1.15 0.62-2.12 .56 1.39 0.26-7.36 .48
Anesthesia: deep/general vs moderate 1.11 0.62-2.01 .66 1.06 0.19-5.95 .90
Largest LN, cm
 ≤ 1 vs < 1-2 (reference) 0.51 0.34-0.77 .003 0.41 0.23-0.75 .006
 < 2-3 vs < 1-2 2.49 1.61-3.85 < .001 2.27 1.07-4.78 .034
 > 3 vs < 1-2 3.61 2.17-6.00 < .001 3.37 1.26-8.98 .019
Linear EBUS-TBNA biopsy: yes vs no 2.42 0.91-6.44 .07 0.67 0.04-10.22 .67
PET scan: positive vs negative 3.12 1.39-7.01 .018

See Table 1 and 3 legends for expansion of abbreviations.