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Thorax 54:921-924 doi:10.1136/thx.54.10.921
  • Original article

Interferon gamma for diagnosing tuberculous pleural effusions

Table 2

Sensitivity, specificity, and likelihood ratio for positive test result (LR+) for all possible cut off points

Cut off point (pg/ml) Sensitivity Specificity LR+
0 1.000 0.000 1.00
22 0.974 0.593 2.39
83 0.974 0.889 8.77
88 0.949 0.889 8.54
240 0.949 0.963 25.62
1300 0.538 0.963 14.54
1400 0.538 1.000
2750 0.000 1.000

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