. Author manuscript; available in PMC: 2013 Jun 1.

Published in final edited form as: Sleep Med. 2012 Apr 28;13(6):752–758. doi: 10.1016/j.sleep.2012.02.014

Table 3.

Bivariate Correlations Between Assessment Instruments

	1	2	3	4	5	6	7	8
1. PSQI Sleep Efficiency	-
2. PSQI Perceived Sleep Quality	.44^*	-
3. PSQI Daily Disturbances	.25^*	.39^*	-
4. PSQI Global Score	.79^*	.84^*	.60^*	-
5. CAPS	.36^*	.40^*	.37^*	.48^*	-
6. BDI	.22^*	.34^*	.47^*	.41^*	.50^*	-
7. STAXI Trait Anger	.03	.01	.15	.05	.22^*	.30^*	-
8. PILL	.20^*	.34^*	.53^*	.43^*	.45^*	.48^*	.23^*	-

Values represent Pearson’s product-moment correlation coefficients. BDI, Beck Depression Inventory; CAPS, Clinician Administered PTSD Scale; PILL, Pennebaker Inventory of Limbic Languidness; PSQI, Pittsburgh Sleep Quality Index; STAXI, State-Trait Anger Expression Index.

p < .05 with Bonferroni correction for multiple comparisons.