Table 2.

Zero-order correlations among study variables (N = 144).

		1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.	12.
1.	Opioids	--
2.	Female	−0.10	--
3.	AHI	0.20^*	−0.13	--
4.	BDI–II	0.17^*	0.04	−0.13	--
5.	Sleep meds	0.14	−0.02	0.15	0.12	--
6.	Non–opioids	−0.10	0.12	−0.03	−0.08	0.01	--
7.	Pain	0.22^**	−0.17^*	−0.02	0.39^***	−0.08	−0.24^**	--
8.	SOL self–report	0.19^*	−0.04	0.14	0.24^**	0.24^**	−0.02	0.01	--
9.	SOL actigraphy	0.25^**	−0.15	0.04	0.29^**	0.10	−0.16	0.24^**	0.48^***	--
10.	WASO self–report	0.03	0.11	−0.09	0.23	−0.12	−0.11	0.22^**	0.08	−0.01	--
11.	WASO actigraphy	0.21^*	0.07	0.13	0.06	0.07	−0.01	0.11	0.19^*	0.24^**	0.28^**	--
12.	Quality	−0.14	0.02	0.09	−0.14	0.17^*	0.23	−0.38^***	−0.06	−0.06	−0.30^***	−0.05	--
13.	Time in bed	0.22^**	−0.02	0.08	0.24^**	0.31^***	−0.05	−0.03	0.42^***	0.36^***	0.11	0.50^***	0.10

Note. p < .05.

^**

p < .01.

^***

p < .001.

AHI = apnea hypopnea index. BDI-II = Beck Depression Inventory. Sleep meds = yes/no use of sleep medication. Non-opioids = yes/no use of non-opioid medication. Opioids = yes/no use of opioid medication. Pain = average pain intensity (visual analogue scale). Quality = sleep quality. SOL = sleep onset latency. TIB = time in bed. WASO = wake after sleep onset.