Table 2.

Zero-order Spearman nonparametric correlations among preoperative predictors of postoperative opioid use.

Preoperative Predictor	2.	3.	4.	5.	6.	7.	8.	9.	10.
1. Preoperative Opioid Use	0.11	0.39***	0.08	0.13	0.02	0.20*	0.15	0.28**	0.12
2. HOME-Euphoric Response	--	0.09	−0.10	−0.01	−0.17	0.00	0.00	−0.03	−0.11
3. HOME-Opioid Exposure	--	--	0.26**	0.19†	0.14	0.24*	0.25*	0.26**	0.00
4. CES-D	--	--	--	0.66***	0.53***	0.14	0.52***	0.52***	0.28**
5. CATS	--	--	--	--	0.59***	0.22*	0.63***	0.42***	0.31**
6. STAI	--	--	--	--	--	0.22*	0.38***	0.38***	0.13
7. MBM	--	--	--	--	--	--	0.22*	0.18†	0.15
8. PROMIS Pain Interference	--	--	--	--	--	--	--	0.39***	0.12
9. PROMIS Sleep Disturbance	--	--	--	--	--	--	--	--	0.21*
10. Temporal Summation of Pain	--	--	--	--	--	--	--	--	--

^†p<.10

^*p<.05

^**p<.01

^***p<.001

Note: TKA = Total Knee Arthroplasty, HOME = History of Opioid Medical Exposure, CES-D = Center for Epidemiological Studies Depression Scale, CATS = Catastrophizing Scale, STAI = State Trait Anxiety Inventory, MBM = Michigan Body Map