. Author manuscript; available in PMC: 2016 May 16.

Published in final edited form as: Am J Drug Alcohol Abuse. 2014 Feb 12;40(2):163–169. doi: 10.3109/00952990.2013.848875

Table 2.

Zero-Order Correlations and Principal-Component Factor Analysis of Craving Scales Measured at Baseline (n = 147).

	Product-Moment Correlations				PCF^a

	1.	2.	3.	4.	F1	F2
1. Penn Craving Scale	1.00				.81	.03
2. DDQ – Desire/Intention	.66^**	1.00			.95	−.10
3. DDQ – Negative Reinforcement	.44^**	.69^**	1.00		.81	.09
4. DDQ - Control	.17^*	.09	.21^*	1.00	−.02	1.00

p < .05,

^**

p < .01

Principal-component factor analysis with promax rotation.