. Author manuscript; available in PMC: 2016 Mar 1.

Published in final edited form as: Res Social Adm Pharm. 2014 Oct 8;11(2):253–264. doi: 10.1016/j.sapharm.2014.08.005

Table 2.

One-Component Solution of the Nine-Item Scale

Item^c	Phase 1^a		Phase 2^b
Item^c	Communality	Factor Loadings	Communality	Factor Loadings
My medication is helping improve my condition.	0.23	0.48	0.18	0.42
My medication does not seem to help that much.^d	0.32	0.56	0.39	0.62
Sometimes I think I take too many medications.^d	0.37	0.61	0.35	0.59
Sometimes I think I may not be taking the right medication for my condition.^d	0.39	0.63	0.60	0.78
Sometimes my medication has effects I do not like.^d	0.41	0.64	0.41	0.64
Sometimes I feel worse after I take my medication.^d	0.50	0.71	0.63	0.79
I worry about drug interactions between the medications I take.^d	0.35	0.59	0.42	0.65
My medication interferes with my routine daily activities.^d	0.54	0.74	0.60	0.77
I have trouble taking my medication the way I am supposed to.^d	0.31	0.56	0.33	0.57

Total n=394, however not every respondent answered each question. For this analysis, n=358. Accounted for 38% of variance

Total n=200, however not every respondent answered each question. For this analysis, n=199. Accounted for 43% of variance

1=Strongly Agree, 2=Agree, 3=Not Sure, 4=Disagree, 5=Strongly Disagree

Reverse-scored so that higher scores on scale are associated with more MRPs.