Table 2.
Goodness-of-Fit Values, Parameter Estimates ± 1 SE, and 99% Confidence Intervals (CI) for the Model Predictions at Days 15 and 35 for Empirical Self-Regulation Dynamic Models
| Group | ||
|---|---|---|
| AC | PNc | |
| Number of subjects in group average variables | 98 | 98 |
| Current craving goodness-of-fit (%) | 87.32 | 62.25 |
| CPD goodness-of-fit (%) | 89.16 | 84.12 |
| Quit attempt process: gain, K d | −15.01±0.19 | −10.24±0.10 |
| Craving self-regulator: gain, K c | 0.08±0.03 | 0.30±0.05 |
| Craving self-regulator: time constant, τc | 4.59±2.08 | 1.89±0.44 |
| Craving generation process: gain, K 1 | 0.77±0.02 | 0.52±0.33 |
| Craving generation process: time constant, τ1 | 8.22±0.63 | 26.75±15.09 |
| Craving generation process: system zero, τa | −1.99±0.22 | −21.90±3.45 |
| Current craving model prediction, day 15, 99% CI | 20.80 to 21.75 | 24.93 to 26.08 |
| Current craving model prediction, day 35, 99% CI | 15.63 to 16.68 | 20.13 to 22.13 |
| CPD model prediction, day 15, 99% CI | −0.01 to 1.01 | 1.84 to 2.64 |
| CPD model prediction, day 35, 99% CI | 0.78 to 1.53 | 3.22 to 4.02 |