. 2016 May 31;19(1):49–58. doi: 10.1093/ntr/ntw145

Table 3.

Hierarchical Regressions Predicting Demand Indices for the Stress Session

Stress session	B	SE (B)	T score	P	95% CI for B		∆R ²
Intensity (n = 72)
Step 1							0.59
CPSD	0.04	0.01	8.52	<.001	0.03	0.05
SP group	0.03	0.04	0.62	.54	−0.06	0.11
NA baseline	0.01	0.004	2.30	.03	0.001	0.02
Step 2							0.01
CPSD	0.04	0.01	7.88	<.001	0.03	0.05
SP group	0.02	0.05	0.42	.68	−0.07	0.11
NA baseline	0.01	0.01	1.10	.28	−0.004	0.01
CES-D	0.003	0.002	1.36	.18	−0.001	0.01
NA change	-0.002	0.003	-0.55	.58	−0.01	0.01
Step 3							0.04
CPSD	0.04	0.01	8.42	<.001	0.03	0.05
SP group	0.01	0.04	0.15	.88	−0.08	0.10
NA baseline	0.01	0.004	1.52	.13	−0.002	0.02
CES-D	0.003	0.002	1.36	.18	−0.001	0.01
NA change	0.001	0.003	0.31	.76	−0.01	0.01
CES-D × NA	−0.001	0.00	−2.45	.02	−0.001	0.00
Breakpoint (n = 72)
Step 1							0.10
CPSD	0.01	0.01	0.68	.50	−0.01	0.03
SP group	0.14	0.09	1.48	.14	−0.05	0.32
NA baseline	0.01	0.01	1.68	.10	−0.003	0.03
Step 2							0.18
CPSD	0.001	0.01	0.09	.93	−0.02	0.02
SP group	−0.002	0.09	−0.02	−.99	−0.18	0.18
NA baseline	0.02	0.01	2.52	.01	0.01	0.04
CES-D	0.01	0.004	1.33	.19	−0.003	0.02
NA change	0.02	0.01	3.45	.001	0.01	0.04
Step 3							0.05
CPSD	−0.002	0.01	−0.17	.87	−0.02	0.02
SP group	0.02	0.09	0.22	.82	−0.16	0.20
NA baseline	0.02	0.01	2.21	.03	0.002	0.04
CES-D	0.01	0.004	1.40	.17	−0.003	0.02
NA change	0.02	0.01	2.62	.01	0.004	0.03
CES-D × NA	0.001	0.00	2.13	.04	0.00	0.002
O _max (n = 72)
Step 1							0.39
CPSD	0.04	0.01	5.37	<.001	0.03	0.06
SP group	0.04	0.07	0.60	.55	−0.10	0.19
NA baseline	0.01	0.01	2.19	.03	0.001	0.03
Step 2							0.08
CPSD	0.04	0.01	5.06	<.001	0.02	0.06
SP group	−0.05	0.08	−0.62	.54	−0.20	0.10
NA baseline	0.02	0.01	2.88	.01	0.01	0.04
CES-D	0.003	0.003	0.75	.45	−0.01	0.01
NA change	0.02	0.01	2.97	.004	0.01	0.03
Step 3							0.01
CPSD	0.04	0.01	4.91	<.001	0.02	0.05
SP group	−0.04	0.08	−0.52	.61	−0.19	0.11
NA baseline	0.02	0.01	2.70	.01	0.01	0.04
CES-D	0.003	0.003	0.77	.45	−0.004	0.01
NA change	0.01	0.01	2.50	.02	0.003	0.03
CES-D × NA	0.00	0.00	0.79	.43	−0.001	0.001
P _max (n = 72)
Step 1							0.05
CPSD	0.01	0.01	0.91	.36	−0.01	0.03
SP group	0.02	0.10	0.18	.86	−0.19	0.23
NA baseline	0.01	0.01	1.43	.16	−0.01	0.03
Step 2							0.15
CPSD	0.004	0.01	0.41	.69	−0.02	0.03
SP group	−0.12	0.11	−1.15	.25	−0.33	0.09
NA baseline	0.02	0.01	2.16	.03	0.002	0.04
CES-D	0.01	0.01	1.13	.26	−0.004	0.02
NA change	0.02	0.01	3.07	.003	0.01	0.04
Step 3							0.07
CPSD	0.001	0.01	0.11	.91	−0.02	0.02
SP group	−0.09	0.10	−0.91	.37	−0.29	0.11
NA baseline	0.02	0.01	1.81	.08	−0.002	0.04
CES-D	0.01	0.01	1.23	.22	−0.004	0.02
NA change	0.02	0.01	2.12	.04	0.001	0.03
CES-D × NA	0.001	0.001	2.54	.01	0.00	0.003
Elasticity (n = 64)
Step 1							0.32
CPSD	−0.04	0.01	−4.37	<.001	−0.06	−0.02
SP group	−0.02	0.08	−0.23	.82	−0.18	0.14
NA baseline	−0.01	0.01	−1.71	.09	−0.03	0.002
Step 2							0.11
CPSD	−0.04	0.01	−4.35	<.001	−0.05	−0.02
SP group	0.09	0.08	1.07	.29	−0.08	0.26
NA baseline	−0.02	0.01	−2.85	.01	−0.04	−0.01
CES-D	−0.001	0.004	−0.38	.71	−0.01	0.01
NA change	−0.02	0.01	−3.22	.002	−0.03	−0.01
Step 3							0.000
CPSD	−0.04	0.01	−4.19	<.001	−0.05	−0.02
SP group	0.09	0.09	1.00	.32	−0.09	0.26
NA baseline	−0.02	0.01	−2.78	.01	−0.04	−0.01
CES-D	−0.002	0.004	−0.39	.70	−0.01	0.01
NA change	−0.02	0.01	−2.83	.01	−0.03	−0.01
CES-D × NA	0.00	0.00	−0.19	.85	−0.001	0.001

CPSD = cigarettes per smoking day. SP = social phobia, SP group coded 0 = average SP, 1 = high SP. CES-D = depressive symptoms on the CES-D. NA baseline = negative affect on the first administration of the PANAS. NA change = negative affect change between the second and first administrations of the PANAS. CES-D × NA = the interaction between depressive symptoms and negative affect change. CPSD, SP group, NA baseline, CES-D, and NA change were all grand mean centered. Demand indices were log10 transformed.