Table 2.
Sensitivity, Specificity, Positive Predictive Value, and Negative Predictive Value of Each Susceptibility Measure at Follow-up Year 1 and Follow-up Year 2 for Each Tobacco Product or E-Cigarette, 2013–2016 COMPASS Study
| Tobacco product or e-cigarette | S1-Try | S2-Offer | S3-Smoke | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | |||||||||||||
| Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | Year 1 | Year 2 | |
| Tobacco cigarettes | 52.7 | 47.7 | 78.6 | 80.8 | 19.0 | 34.3 | 94.6 | 88.1 | 47.2 | 40.6 | 83.7 | 85.6 | 21.7 | 37.2 | 94.3 | 87.3 | 41.8 | 34.7 | 86.6 | 88.0 | 23.0 | 37.8 | 94.0 | 86.5 |
| E-cigarettes | 43.4 | 44.2 | 77.0 | 77.3 | 9.9 | 12.4 | 95.9 | 95.1 | 39.2 | 35.0 | 82.2 | 82.2 | 11.3 | 12.4 | 95.9 | 94.6 | 31.6 | 29.7 | 85.0 | 85.1 | 10.9 | 12.5 | 95.5 | 94.4 |
| Cigarillos or little cigars | 42.3 | 41.9 | 76.4 | 76.9 | 5.1 | 9.1 | 97.8 | 96.0 | 39.3 | 36.3 | 81.6 | 82.0 | 6.0 | 10.1 | 97.8 | 95.8 | 30.4 | 27.5 | 84.5 | 84.8 | 5.5 | 9.1 | 97.6 | 95.4 |
| Cigars | 47.6 | 39.4 | 76.4 | 76.4 | 4.3 | 5.4 | 98.5 | 97.4 | 45.8 | 34.9 | 81.6 | 81.6 | 5.2 | 6.0 | 98.6 | 97.4 | 34.5 | 22.2 | 84.5 | 84.3 | 4.7 | 4.6 | 98.3 | 97.0 |
| Hookah | 48.6 | 42.4 | 76.4 | 76.5 | 3.8 | 5.7 | 98.7 | 97.5 | 46.6 | 33.6 | 81.6 | 81.5 | 4.6 | 5.7 | 98.8 | 97.3 | 34.3 | 30.7 | 84.5 | 84.6 | 4.1 | 6.2 | 98.5 | 97.4 |
| Smokeless tobacco | 45.3 | 34.1 | 76.2 | 76.1 | 2.6 | 3.2 | 99.0 | 98.0 | 39.6 | 31.8 | 81.3 | 81.3 | 2.9 | 3.8 | 99.0 | 98.1 | 22.6 | 18.2 | 84.2 | 84.2 | 2.0 | 2.6 | 98.7 | 97.8 |
| Any tobacco product or e-cigarette | 47.7 | 44.0 | 79.6 | 81.7 | 26.9 | 41.3 | 90.6 | 83.3 | 41.6 | 36.9 | 84.6 | 86.3 | 29.9 | 44.1 | 90.2 | 82.3 | 36.7 | 31.6 | 87.4 | 88.7 | 31.4 | 44.9 | 89.7 | 81.6 |
S1-Try: “Do you think in the future you might try smoking cigarettes?”
S2-Offer: “If one of your best friends was to offer you a cigarette, would you smoke it?”
S3-Smoke: “At any time during the next year do you think you will smoke a cigarette?