Effectiveness of interferon-gamma release assays for differentiating intestinal tuberculosis from Crohn’s disease: A meta-analysis

Table 2 Characteristics of the included studies

Ref.	ITB/CD patients (n)	Reference standard	Cross-sectional design	Consecutive or random	Blinded design	Prospective
Lee et al[28]	12/44	Bac/His or Clin	Unknown	Yes	Unknown	Yes
Lei et al[29]	88/103	Bac/His	Unknown	Yes	No	Yes
Kim et al[30]	64/64	Bac/His	No	Yes	No	Yes
Li et al[31]	19/65	Bac/His or Clin	Yes	Yes	No	Yes
Kim et al[32]	75/72	Bac/His or Clin	No	Yes	No	Yes

ITB: Intestinal tuberculosis; CD: Crohn’s disease; Bac: Bacteriology; His: Histology; Clin: Clinical course.