Table 6.
—Multivariate Hierarchical Logistic Regression Model for Diagnostic Yield Per LN
| All LNs (N = 1,819) |
LNs From Patients With PET Scans (n = 839) |
|||||
| Variable | OR | 95% CI | P Value | OR | 95% CI | P Value |
| Hospital volume | 1.002 | 1.000-1.004 | .013 | 1.000 | 0.997-1.003 | .90 |
| Sex: male vs female | 0.73 | 0.53-0.99 | .045 | 0.84 | 0.53-1.32 | .45 |
| Smoking status: smoker vs never | 1.45 | 1.02-2.06 | .037 | 1.30 | 0.76-2.22 | .34 |
| Number of LN sites: > 2 vs 1 or 2 | 0.38 | 0.05-3.08 | .11 | 0.40 | 0.25-0.65 | < .001 |
| Deep/general vs moderate anesthesia | 0.91 | 0.57-1.46 | .70 | 1.23 | 0.52-2.9 | .63 |
| On-site cytologic evaluation: yes vs no | 0.90 | 0.56-1.44 | .63 | 2.55 | 0.68-9.55 | .11 |
| Size of LN, cm | ||||||
| ≤ 1 vs < 1-2 (reference) | 0.29 | 0.21-0.39 | < .001 | 0.33 | 0.21-0.53 | < .001 |
| < 2-3 vs < 1-2 | 2.10 | 1.35-3.28 | .001 | 1.52 | 0.7-3.31 | .29 |
| > 3 vs < 1-2 | 2.05 | 1.08-3.91 | .029 | 2.49 | 0.78-8.00 | .12 |
| Location of LN: 4L vs other | 0.98 | 0.65-1.47 | .91 | 1.17 | 0.65-2.11 | .59 |
| Linear EBUS-TBNA biopsy: yes vs no | 2.05 | 0.80-5.27 | .13 | 4.19 | 0.39-44.42 | .19 |
| PET scan: positive vs negative | 4.30 | 2.57-7.18 | < .001 | |||