Table 3.

Confirmatory Factor Analysis Items and Item–Factor Loadings for Each Clinical Trial (Model 3)

	Loading			Loading
Item	AB, Week 1 (n = 72)	MF, Week 2 (n = 124)	NXP, Week 1 (n = 242)	MF, Week 6 (n = 102)	NXP, Week 6 (n = 204)
1. Craving for cigarettes	.58	.46	.52	.35	.54
2. Irritability, frustration, or anger	.87	.86	.82	.85	.75
3. Anxiety	.90	.84	.83	.77	.77
4. Difficulty concentrating	.60	.81	.72	.82	.82
5. Restlessness	.88	.82	.72	.74	.81
6. Increased appetite or weight gain	.11	.18	.29	.14	.45
7. Depressed or sad mood	.53	.68	.69	.67	.68
8. Insomnia or sleep problems	.25	.39	.34	.44	.36

Note. AB = abstinence study; MF = message framing study; NXP = naltrexone + patch study.