Table 2.

Fixed effects of time and covariates across models.

Model 1 (Fully unconditional Model)
Effect	Estimate	SE	Pr > |t|	Low CI	High CI
Intercept	14.66	0.22	<.001	14.14	15.18
Model 2 (Unconditional linear growth model)
Effect	Estimate	SE	Pr > |t|	Low CI 5.75	High CI
Intercept	14.68	0.23	<.001	14.17	15.19
time	−.40	.07	<.001	−.55	−.24
Model 3 (Unconditional quadratic growth model)
Effect	Estimate	SE	Pr > |t|	Low CI	High CI
Intercept	14.71	0.25	<.001	14.20	15.22
time	1.26	0.20	<.001	0.85	1.67
time2	−0.45	0.05	<.001	−0.55	−0.35
Model 4 (Conditional main effect model)
Effect	Estimate	SE	Pr > |t|	Low CI	High CI
Δ Anxiety Sensitivity	−0.14	0.03	<.001	− 0.16	−0.05
Δ Anxiety Sensitivity*time	−0.04	0.03	0.15	−0.09	0.02
Δ Anxiety Sensitivity*time2	.0.01	0.01	0.13	−0.003	0.02
Δ Dysphoria	−0.38	0.04	<.001	−0.46	−0.32
Δ Dysphoria*time	−0.04	0.04	0.27	−0.03	0.11
Δ Dysphoria*time2	0.001	0.001	0.95	−0.02	0.01
Model 4 (Conditional interactive effect model)
Effect	Estimate	SE	Pr > |t|	Low CI	High CI
Δ Anxiety Sensitivity * Δ Dysphoria	0.007	0.006	0.68	−0.005	0.009
Δ Anxiety Sensitivity * Δ Dysphoria*time	0.01	0.006	<.001	0.003	0.005
Δ Anxiety Sensitivity * Δ Dysphoria*time2	−0.006	0.001	<.001	−0.001	−0.0004
Model 5 (Conditional main effect model with covariates)3
Effect	Estimat	SE	Pr > |t|	Low CI	High CI
Intercept	14.43	0.62	<.001	13.21	15.66
time	0.71	0.54	0.18	−0.34	1.78
time2	−0.31	0.12	0.01	−0.57	−0.06
Time-varying CO 4	0.003	0.01	0.80	−0.02	0.03
Condition 5	−0.37	0.48	0.44	−1.33	0.58
Condition*time	−0.21	0.16	0.20	−0.55	0.11
Gender	−0.02	0.47	0.95	−0.96	0.91
Gender*time	0.03	0.16	0.83	−0.28	0.35
Tobacco-related illness	−0.17	0.72	0.80	−1.61	1.25
Tobacco-related illness*time	−0.24	0.25	0.35	−0.74	0.26
Baseline CO	0.01	0.02	0.43	−0.02	0.06
Baseline CO*time	0.01	0.02	0.59	−0.03	0.05
Baseline CO*time2	−0.004	0.01	0.43	−0.01	0.01
Use of NRT	0.06	0.59	0.91	−1.11	1.23
Use of NRT*time	1.31	0.60	0.03	0.12	2.50
Use of NRT*time2	−0.29	0.14	0.04	−0.58	−0.001
Δ Anxiety Sensitivity	−0.13	0.03	0.001	−0.20	−0.06
Δ Anxiety Sensitivity*time	0.003	0.03	0.91	−0.06	0.07
Δ Anxiety Sensitivity*time2	−0.001	0.01	0.86	−0.01	0.01
Δ Dysphoria	−0.34	0.04	<.001	−0.44	−0.25
Δ Dysphoria*time	0.001	0.04	0.97	−0.09	0.09
Δ Dysphoria*time2	0.01	0.01	0.49	−0.01	0.03
Model 5 (Conditional interactive effect model with covariates)
Effect	Estimat	SE	Pr >|t|	Low CI	High CI
Δ Anxiety Sensitivity * Δ Dysphoria	0.003	0.004	0.94	−0.009	0.009
Δ Anxiety Sensitivity * Δ Dysphoria*time	0.002 e	0.001	0.002	0.001	0.004
Δ Anxiety Sensitivity * Δ Dysphoria*time2	−0.002	0.001	0.06	−0.005	0.0003

Note. N=198. Low CI & High CI= 95% confidence interval of the estimated beta coefficient; Gender:1 0=male and 1=female; CO = Carbon Monoxide; NRT = Nicotine Replacement Therapy; CPD = Cigarettes Per Day; Δ Anxiety Sensitivity = change in Anxiety Sensitivity (residualized change score); Δ Dysphoria = change in Dysphoria (residualized change score).