Table 2.

Non-Parametric Correlations

	1	2	3	4	5	6	7	8	9
1 BPI Severity	1	.66^**	.50^**	.29^*	.17	−.24	.38^**	−.16	−.14
2 BPI Interference	.66^**	1	.53^**	.28^*	.25^*	−.15	.42^**	.11	−.09
3 PCS	.50^**	.53^**	1	.50^**	.43^**	−.17	.44^**	.02	−.04
4 Anxiety (PROMIS)	.30^*	.28^*	.50^**	1	.64^**	−.26^*	.38^**	−.12	−.26
5 Depression (PROMIS)	.17	.25^*	.43^**	.64^**	1	−.12	.36^**	−.02	.02
6 Pain Threshold	−.24^*	−.15	−.17	−.26^*	−.12	1	−.09	.33^*	.30^*
7 Sleep Quality	.38^**	.42^**	.44^**	.38^**	.36^**	−.09	1	.01	−.05
8 CAR	−.16	.11	.02	−.12	−.02	.33^*	.01	1	.52^**
9 AUC_G	−.14	−.09	−.04	−.26	.02	.30^*	−.05	.52^**	1

^*.

Correlation is significant at the 0.05 level (two-tailed)

^**.

Correlation is significant at the 0.01 level (two-tailed)

BPI: Brief Pain Inventory; PCS: Pain Catastrophizing; PROMIS: Patient-Reported Outcomes Measurement Information System (T-Score); PSQI6: Pittsburgh Sleep Quality Index; CAR: Cortisol Awakening Response; AUCG: Area under the curve with respect to ground, Total post-awakening cortisol levels