Table 2.

IGRA performance using different cutoffs.

	Cutoff ≥100 mIU/mL	Cutoff ≥147 mIU/mL	Cutoff ≥200 mIU/mL
Sensitivity % (95% CI)	89.4% (81.5–94.3)	87.2% (79.0–92.5)	81.9% (72.9–88.4)
Specificity (95% CI)	84.6% (66.5–93.8)	92.3% (75.9–97.9)	92.3% (75.9–97.9)
Negative predictive value (95% CI)	68.8% (51.4–82.1)	66.7% (50.3–79.8)	58.5% (43.4–72.2)
Positive predictive value (95% CI)	95.5% (88,9–98.2)	97.6% (91.7–99.3)	97.4% (91.2–99.3)
Accuracy (95% CI)	88.3% (81.4–92.9)	88.3% (81.4–92.9)	84.2% (76.6–89.6)