Table 3.

—Univariate Analysis of EBUS-TBNA Characteristics by Diagnostic Yield per Patient Procedure

EBUS-TBNA Characteristic	OR (95% CI)	P Value
Needle gauge (21 vs 22)	1.1 (0.9-1.3)	.56
Age (< 63 vs ≥ 63 y)	1.1 (1.0-1.3)	.17
Number of sites sampled
1 (reference)		…
2	0.7 (0.5-0.9)	.002
3	0.7 (0.5-0.9)	.001
4	0.3 (0.2-0.4)	< .001
≥ 5	0.5 (0.4-0.7)	< .001
Sex (male or female)	1.3 (1.1-1.5)	.002
Ethnicity (white or nonwhite)	0.7 (0.6-0.9)	.002
CT scan short-axis node size, cm
< 1 (reference)		…
1-2	1.5 (1.3-1.8)	< .001
2-3	3.1 (2.3-4.1)	< .001
≥ 3	3.7 (2.6-5.3)	< .001
Lymph nodes sampled
Subcarinal (reference)		…
Left hilar	0.9 (0.7-1.2)	.39
Right hilar	0.8 (0.7-1.0)	.10
Superior mediastinum/aortic  (not including station 4)	1.7 (1.3-2.3)	.001
Low right paratracheal	1.1 (0.9-1.4)	.26
Low left paratracheal	1.1 (0.9-1.4)	.45
ROSE (no vs yes)	1.0 (0.9-1.2)	.80
Smoking status (ever vs never)	1.3 (1.1-1.5)	.003
Comorbid conditions present  (no vs yes)	0.6 (0.6-0.7)	< .001

See Table 2 legend for expansion of abbreviations.