Table 6. Best fitting multivariate models using somatic variables only, negative affect variables only, and then the combination somatic and negative affect variables to predict relapse during the attempted abstinence.

Withdrawal measure	Wald/Omnibus Chi Sq	p value	OR	OR 95% CI
Somatic variables only model	8.525	0.036
I had trouble getting to sleep (abstinence – baseline)	1.71	0.19	0.59	0.27, 1.29
I had no appetite (abstinence – baseline)	0.93	0.33	1.38	0.71, 2.69
I felt physically tense (abstinence – baseline)	4.4	0.036	2.52	1.06, 5.99
Negative affect variables only model	3.03	0.55
I felt anxious (abstinence – baseline)	0.76	0.38	1.36	0.68, 2.75
Life felt like an uphill struggle (abstinence – baseline)	0.03	0.87	1.08	0.42, 2.82
I had mood swings (abstinence – baseline)	0.24	0.62	0.8	0.33, 1.93
I felt depressed (abstinence – baseline)	0.35	0.55	1.38	0.47, 4.11
Combined somatic and negative affect model	10.82	0.15
I had trouble getting to sleep (abstinence – baseline)	1.98	0.16	0.58	0.27, 1.24
I had no appetite (abstinence – baseline)	0.96	0.33	1.44	0.69, 3
I felt physically tense (abstinence – baseline)	4.77	0.02	3.74	1.14, 12.19
I felt anxious (abstinence – baseline)	0.05	0.83	1.1	0.46, 2.6
Life felt like an uphill struggle (abstinence – baseline)	0.59	0.44	1.6	0.47, 5.7
I had mood swings (abstinence – baseline)	1.7	0.19	0.47	0.15, 1.5
I felt depressed (abstinence – baseline)	0.087	0.77	0.81	0.21, 3.2