. Author manuscript; available in PMC: 2015 Jun 16.

Published in final edited form as: Health Psychol. 2014 Jul 14;33(10):1204–1213. doi: 10.1037/hea0000089

Table 1.

Correlations Among Predictor and Outcome Variables

Variable	1	2	3	4	5	6	7	8	9
1.PSQI V1	—
2.PSQI V2	.65^**	—
3.PSQI V3	.68^**	.86^**	—
4.SBP V1	.10	.10	.01	—
5.SBP V2	.43^**	.23^*	.21	.30^*	—
6.SBP V3	.23	.20	.15	.42^**	.46^**	—
7.DBP V1	.09	.10	.03	.94^**	.20	.39^**	—
8.DBP V2	.37^**	.16	.21	.34^**	.95^**	.51^**	.29^*	—
9.DBP V3	.21	.20	.12	.54^**	.42^**	.94^**	.48^**	.50^**	—
M	7.70	5.47	5.26	138.52	137.65	137.32	80.10	79.28	79.82
SD	4.10	3.64	3.54	17.82	18.57	19.36	12.97	12.09	12.05

Note. V1 PSQI = Visit 1 Pittsburg Sleep Quality Index; V2 PSQI = Visit 2; V3 PSQI = Visit 3; V1 SBP = Visit 1 systolic blood pressure; V2 SBP = Visit 2; V3 SBP = Visit 3; V1 DBP = Visit 1 diastolic blood pressure; V2 DBP = Visit 2; V3 DBP = Visit 3.

p < .05.

^**

p < .01.