Table 1.

HP Diagnostic Confidence in Both Guidelines

Degree of Diagnostic Confidence	ATS/JRS/ALAT (n = 144) [n (%)]	CHEST (n = 144) [n (%)]	P Value
Definite/HP	26 (18)	94 (65)	<0.0001
High/moderate*	109 (76)	38 (27)	<0.0001
High	60 (42)	38 (27)	0.008
Moderate	49 (34)	—	—
Low	6 (4)	10 (7)	0.44
Not excluded/unlikely	3 (2)	2 (1)	1.0

Definition of abbreviations: ALAT = Asociación Latinoamericana del Tórax; ATS = American Thoracic Society; CHEST = American College of Chest Physicians; HP = hypersensitivity pneumonitis; JRS = Japanese Respiratory Society.

^*ATS/JRS/ALAT guideline separates high confidence (80–89%) from moderate confidence (70–79%), whereas the CHEST guideline unifies these under the category provisional high confidence (70–89%).