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. Author manuscript; available in PMC: 2011 Jan 23.
Published in final edited form as: Eur Respir J. 2010 Jan 14;36(3):594–600. doi: 10.1183/09031936.00171509

Table 3.

ROC curve analysis at varying cut-off values for ratio of summed T-cell response: CD4 count

POSITIVE SFC/CD4
RATIO CUT-OFF SENSITIVITY(%) SPECIFICITY(%) LIKELIHOOD RATIO
(SFC/million: CD4) POSITIVE NEGATIVE
.04 91.8 38.0 1.5 0.2
.08 85.9 50.6 1.7 0.3
.12 80.0 62.0 2.1 0.3
1 38.8 97.5 15.3 0.6
1.793 22.4 98.7 17.7 0.8