Table 2.

Agreement between QTF-G and TST in patients with rheumatoid arthritis and ankylosing spondylitis.

Rheumatoid ArthritisAnkylosing Spondylitis
TST (−)TST (+)TotalTST (−)TST (+)Total
QTF-G (−)29184782735
QTF-G (+)5253011920
Total34437794655
Kappa0.420.14
  • QTF-G: Quantiferon-TB Gold test; TST: tuberculin skin test.