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Kappa coefficients, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of cutoff scores on the mFTQ used assess full cigarette smoking. The cutoff at ≥3 is bolded to indicate the greatest kappa value for concordance.
| mFTQ Cutoff Score | Kappa | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
| ≥1 | 0.58 | 92% | 84% | 52% | 98% |
| ≥2 | 0.60 | 88% | 86% | 55% | 98% |
| ≥3 | 0.68 | 81% | 93% | 68% | 96% |
| ≥4 | 0.63 | 58% | 98% | 83% | 92% |
| ≥5 | 0.61 | 50% | 99% | 93% | 91% |
| ≥6 | 0.43 | 31% | 100% | 100% | 88% |
| ≥7 | 0.23 | 15% | 100% | 100% | 86% |
