Table 2.

Zero-order correlations between PSQI global and component scores for those with principal or coprincipal GAD (n = 134)

	Global	1	2	3	4	5	6	7
Global PSQI	1.00
1. Subjective sleep quality	0.76***	1.00
2. Sleep latency	0.67***	0.36***	1.00
3. Sleep duration	0.68***	0.56***	0.26**	1.00
4. Habitual sleep efficiency	0.64***	0.54***	0.26**	0.48***	1.00
5. Sleep disturbances	0.58***	0.39***	0.29***	0.30***	0.30***	1.00
6. Use of sleep medication	0.61***	0.33***	0.43***	0.10	0.21*	0.23**	1.00
7. Daytime dysfunction	0.53***	0.36***	0.25**	0.31***	0.24**	0.31***	0.11	1.00

Note.

^*p < 0.05,

^**p < 0.01,

^***p < 0.001

PSQI = Pittsburgh Sleep Quality Index; GAD = generalized anxiety disorder