Predictors of diagnostic yield in bronchoscopy: a retrospective cohort study comparing different combinations of sampling techniques

Table 1 Baseline characteristics of 363 cases

	n	%
*Sex*
Male	221	60.9
Female	142	39.1
*Age (years)*
< 59	87	24.0
59–67	92	25.3
68–74	90	24.8
> 74	94	25.9
Size*
<= 2 cm	41	11.3
2–3 cm	62	17.1
3–4 cm	53	14.6
> 4 cm	207	57.0
*Distance from carina#*
<= 5 cm	144	39.7
> 5 cm	179	49.3
Indeterminate	40	11.0
*Endobronchial visibility*
Non visible lesion	132	36.4
Constriction, compression or submucosal lesion	90	24.8
Visible lesion	141	38.8
*Localization*
Left upper lobe without lingula	75	20.7
Left lingula	10	2.8
Left lower lobe	53	14.6
Right upper lobe	88	24.2
Right middle lobe	19	5.2
Right lower lobe	73	20.1
Mediastinum	30	8.3
Indeterminate	15	4.1

*Size was measured on axial Ct thorax, only chest radiograph available in 5 cases.
#Distance from carina is measured as the distance from carina to the lesion on the chest radiograph, front projection.

ISSN: 1471-2466