Table 3. Factors that affect sampling adequacy in various lymph node stations.

Localization	OR	(95% Cl)	Univariate	OR	(95% Cl)	Multivariate
			p			p
Subcarinal (7)
Age	0,983	(0.966-1.000)	0,045	0,983	(0.966-1.000)	0,049
Gender	1,033	(0.652-1.636)	0,889	0,937	(0.578-1.517)	0,791
Lymph node size	1,248	(0.975-1.598)	0,078
Number of passes	1,609	(1.168-2.218)	0,004	1,23	(0.695-2.176)	0,478
Number of slides	1,273	(1.098-1.475)	0,001	1,24	(1.062-1.448)	0,006
Right paratracheal (4R)
Age	0,996	(0.976-1.017)	0,727	0,997	(0.975-1.020)	0,817
Gender	1,186	(0.671-2.094)	0,558	1,21	(0.660-2.218)	0,538
Lymph node size	1,799	(1.186-2.728)	0,006	1,486	(0.973-2.268)	0,067
Number of passes	2,029	(1.342-3.068)	0,001	1,026	(0.400-2.629)	0,957
Number of slides	1,396	(1.157-1.684)	<0.001	1,418	(1.146-1.756)	0,001
Right interlobar (11R)
Age	0,996	(0.974-1.017)	0,688	0,995	(0.972-1.018)	0,654
Gender	0,716	(0.378-1.353)	0,303	0,796	(0.401-1.580)	0,515
Lymph node size	1,645	(1.004-2.695)	0,048	1,594	(0.960-2.645)	0,071
Number of passes	2,228	(1.352-3.672)	0,002	2,277	(1.360-3.811)	0,002
Number of slides	1,404	(1.109-1.777)	0,005	0,958	(0.533-1.720)	0,885
Left paratracheal (4L)
Age	1,011	(0.974-1.049)	0,564	1,007	(0.968-1.047)	0,729
Gender	1,14	(0.461-2.819)	0,777	1,253	(0.479-3.276)	0,646
Lymph node size	1,16	(0.657-2.049)	0,609
Number of passes	1,767	(1.025-3.047)	0,04	1,656	(0.955-2.869)	0,072
Number of slides	1,253	(0.961-1.635)	0,095
OR: Odds ratio; CI: Confidence interval.