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. Author manuscript; available in PMC: 2010 Apr 14.
Published in final edited form as: Clin Infect Dis. 2009 Feb 1;48(3):302–312. doi: 10.1086/595847

Figure 3. Observed ROC curves of TST test performance compared with ELISpot results by age and BCG scar status.

Figure 3

a shows the observed ROC curves stratified by age group; the solid line indicates performance in those aged under 2 (n=130); the dashed line in those aged 2-5 (n=275); and the dotted line in those aged 6-16 years old (n=574). b illustrates the observed ROC curves stratified by BCG vaccination scar status; the solid line indicates performance in those with no scar (n=209); the dashed line in those with 1 scar (n=652) and the dotted line in those with 2 or more scars (n=118). Values in boxes indicate TST threshold in millimetres.