Table 1.

Left: Comparison of the rate of opioid dependence amongst Opioid Risk Tool categories. Data is presented as “Average (Standard Deviation)” within each cell; Right: Spearman’s correlation testing of numeric Opioid Risk Tool score and rate of dependence 2 years following surgery

FULL COHORT	Low Risk (N=119)	Moderate Risk (N=9)	High Risk (N=9)	P Value		Spearman’s Rho	Relationship
Dependence:				0.222		0.072	No Relationship
No	96 (80.7%)	9 (100%)	6 (66.7%)
Yes	23 (19.3%)	0 (0.00%)	3 (33.3%)
PRIOR OPIOID USE COHORT	Low Risk (N=30)	Moderate Risk (N=2)	High Risk (N=5)	P Value		Spearman’s Rho	Relationship
Dependence:				0.680		-0.079	No Relationship
No	16 (53.3%)	2 (100%)	3 (60.0%)
Yes	14 (46.7%)	0 (0.00%)	2 (40.0%)
NO PRIOR OPIOID USE COHORT	Low Risk (N=89)	Moderate Risk (N=7)	High Risk (N=4)	P Value		Spearman’s Rho	Relationship
Dependence:				0.449		0.062	No Relationship
No	80 (89.9%)	7 (100%)	3 (75.0%)
Yes	9 (10.1%)	0 (0.00%)	1 (25.0%)