Skip to main content

Table 2 Per sample analyses of Mtb stool assay in 259 children

From: Detection of Mycobacterium tuberculosis in pediatric stool samples using TruTip technology

  Positive stool result (n/N) Indeterminate stool result (n/N) Sensitivity (95% CIa) Specificity (95% CIa)
All samples 25/484 1/484   
Confirmed TB (SM+)b 13/13 0/13 100% (59–100%)  
Confirmed TB (SM-) 7/30 0/30 23.3% (5.6–41%)  
Confirmed TB (all smear grades) 20/43 0/43 47% (27–66%)  
Clinically-diagnosed, unconfirmed TB 1/159 0/159 0.6% (0.00–1.9%)  
No TB diagnosis 4/282 1/282   99% (97–100%)
  1. aCI confidence interval; 95% CI are adjusted for multiple samples per patient. bSM smear