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. 2012 Feb 15;185(4):427–434. doi: 10.1164/rccm.201107-1244OC

TABLE 5.

AGREEMENT BETWEEN T-SPOT AND QFT-GIT

QFT-GIT Positive QFT-GIT Negative Total
T-Spot positive 14 (0.8%) 20 (1.1%) 34 (1.9%)
T-Spot negative 22 (1.2%) 1,725 (96.9%) 1,747 (98.1%)
Total 36 (2%) 1,745 (98%) 1,781

Definition of abbreviations: QFT-GIT = QuantiFERON-TB Gold In-Tube test; T-Spot = T-SPOT.TB test.

% agreement = 97.6%.

Κ (95% confidence interval) = 0.39 (0.24–0.54).