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. 2012 Nov 1;143(4):1036–1043. doi: 10.1378/chest.12-1205

Table 4.

—Univariate Analysis of EBUS-TBNA Characteristics by Diagnostic Yield per Lymph Node Sampled

EBUS-TBNA Characteristic OR (95% CI) P Value
Needle gauge (21 vs 22) 1.3 (1.1-1.6) .004
Age (< 63 vs ≥ 63 y) 0.9 (0.8-1.1) .42
Number of sites sampled
 1 (reference)
 2 0.4 (0.3-0.5) < .001
 3 0.3 (0.2-0.4) < .001
 4 0.2 (0.1-0.2) < .001
  ≥ 5 0.2 (0.1-0.2) < .001
Sex (female or male) 1.2 (1.0-1.4) .031
Ethnicity (white or nonwhite) 1 (0.8-1.2) .90
CT scan short-axis node size, cm
 < 1 (reference)
 1-2 3.3 (2.8-4.0) < .001
 2-3 7.6 (5.7-10.2) < .001
  ≥ 3 9.3 (6.4-13.3) < .001
Lymph nodes sampled
 Subcarinal (reference)
 Left hilar 0.8 (0.6-1.0) .05
 Right hilar 0.8 (0.7-1.1) .18
 Superior mediastinum/aortic  (not including station 4) 2.2 (1.6-3.0) < .001
 Low right paratracheal 1.2 (0.9-1.5) .14
 Low left paratracheal 0.8 (0.6-1.0) .07
 ROSE (no vs yes) 0.7 (0.5-0.8) < .001
 Smoking status (ever vs never) 1.1 (0.9-1.3) .59
 Comorbid conditions present  (no vs yes) 0.7 (0.6-0.8) < .001
 Average number of passes per node 0.9 (0.9-1.0) .07

See Table 2 legend for expansion of abbreviations.