TABLE 1

Study subject characteristics

ControlSarcoidosis
Subjects2255
Age years47 (15–70)43 (24–75)
Male/female6/1636/19
Ethnicity
 White38 (69)
 Black8 (15)
 Other5 (9)
 Unknown4 (7)
Scadding stage
 05 (9)#
 I20 (36)
 II23 (42)
 III4 (7)
 Unknown3 (6)
Diagnosis assessed by
 TBB-EBB17 (31)
 BALF CD4/CD8 >3.58 (15)
 E(B)US-FNA26 (47)
 Other (e.g. mediastinoscopy, other biopsy)4 (7)
Extrathoracic involvement
 No/yes21/34
 Skin8 (15)
 Eyes16 (29)
 Articular+22 (40)
 Central nervous system3 (6)
 Other6 (11)

Data are presented as n, median (range) or n (%). TBB: transbronchial biopsy; EBB: endobronchial biopsy; BALF: bronchoalveolar lavage fluid; E(B)US-FNA: endoscopic (endobronchial) ultrasound-guided fine needle aspiration. #: three patients had stage I and two patients had stage II sarcoidosis, determined by computed tomography (CT) scan; : two patients had stage I and one patient had stage II sarcoidosis, determined by CT scan; +: self-reported articular involvement.