Table 4.

Scale Reliability: Mean stigma levels and internal consistency of Methadone Maintenance Treatment Stigma Mechanisms Scale (N = 93)

Scales (subscales)		M (SD)	α	Modified α with item removed
MMT-SMS
Anticipated Stigma	(k=9)	2.85 (0.89)	.886	.887 (2. Family members will not support my methadone treatment)*
Family Members	(k=3)	2.97 (1.07)	.806	N/A
Employers	(k=3)	2.76 (1.09)	.907	N/A
Healthcare Workers	(k=3)	2.81 (1.14)	.879	N/A
Enacted Stigma	(k=9)	2.55 (0.93)	.902	N/A
Family Members	(k=3)	2.78 (1.20)	.893	N/A
Employers	(k=3)	2.22 (1.02)	.933	N/A
Healthcare Workers	(k=3)	2.65 (1.18)	.899	.912 (18. Healthcare workers have not prescribed me medication that I needed)*
Internalized	(k=7)	2.33 (1.04)	.952	N/A
SU-SMS
Anticipated Stigma	(k=9)	2.94 (1.05)	.932	N/A
Family Members	(k=3)	2.94 (1.24)	.939	N/A
Employers	(k=3)	3.03 (1.19)	.892	N/A
Healthcare Workers	(k=3)	2.86 (1.17)	.886	N/A
Enacted Stigma	(k=9)	2.76 (0.93)	.872	N/A
Family Members	(k=3)	3.29 (1.24)	.918	.920 (10. Family members have thought I cannot be trusted)**
Employers	(k=3)	2.44 (1.08)	.804	.898 (15. Employers have not given me promotions)**
Healthcare Workers	(k=3)	2.55 (1.23)	.878	N/A
Internalized	(k=6)	3.23 (1.04)	.917	N/A

k = number of items in the scale or subscale, respectively.

^*MMT-SMS item number is the same as listed in Table 2.

^**SU-SMS item number is the same as listed in supplemental material (Measure S2).