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Table 2 Self-reported versus urine-toxicology-detected amphetamine-type stimulant use among women participating in the Young Women’s Health Study-2

From: Testing for amphetamine-type stimulant (ATS) use to ascertain validity of self-reported ATS use among young female sex workers in Cambodia

   Urine toxicology result (n)
   Positive Negative
Self-reported use Yes 25 6
  No 3 166
  Percentage   95% CI
Sensitivity 89.3   77.8–100
Specificity 96.5   93.8–99.2
Positive predictive value 80.6   66.7–94.5
Negative predictive value 98.2   96.2–100