Table 2.
Diagnostic parameters for urges to smoke measures as predictors of relapse during week 9–26 and week 9–52.
| Predictor | Week 9–26 | Week 9–52 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Relapsed (N) | Abstinent (N) | SN (%) | SP (%) | PPVa (%) | Relapsed (N) | Abstinent (N) | SN (%) | SP (%) | PPVb (%) | |
| TSU <3 | 68 | 102 | 9.3 | 97.1 | 70.0 | 91 | 79 | 9.0 | 98.8 | 90.0 |
| TSU ≥3 | 7 | 3 | 9 | 1 | ||||||
| SUT <4 | 69 | 104 | 8.0 | 99.0 | 85.7 | 94 | 79 | 6.0 | 98.8 | 85.7 |
| SUT ≥4 | 6 | 1 | 6 | 1 | ||||||
TSU time spent with urges (1–6 = all of the time). SUT strength of urges to smoke (1–6 = extremely strong). SN sensitivity. SP specificity.
aPPV positive predictive value given a 42% prevalence of relapse.
bPPV positive predictive value given a 56% prevalence of relapse.