Table 4.

Factor Analysis with Varimax Rotation of the Medication Adherence Scale (N = 99).

Item	Factora
	1	2	3
1. Believed that it is important to take all of the pills my doctor prescribed for my health	.88	.16	−.05
4. Understand why I need to take pills prescribed for me	.81	.21	.03
2. Believed that it is important to take my pills on time	.67	.03	−.14
3. Believed that it is okay to skip my pills when I am feeling better	−.10	.35	−.20
7. Know the side effects of the pills that I take everyday	.12	.80	−.01
5. Know all the names of pills that I take everyday	.23	.78	−.01
6. Know the dose of each pill that I take everyday	.17	.73	.08
16. Amount of pills that I need to take a day	−.03	−.05	.88
9. Confusing the medication times	.02	.01	.86
13. Belief that my symptoms are better	−.27	.02	.84
17. The frequency of my medication schedule	.02	.10	.84
12. Belief that I’ll be fine even though I skip one dose of medication	−.28	−.05	.83
18. Having no support from my family or somebody for reminding me to take my medication	.01	.06	.80
10. Not trusting the efficacy of medications in my disease	−.22	.02	.79
14. Belief that my symptoms are the same even though I skip the medication	−.40	.03	.77
11. Cost of medication	.02	−.22	.68
15. Not carrying my medication when I am out	.10	−.24	.67
8. Forgetting the time of medication	.20	−.16	.65

^aFactor 1 = Attitude about medication adherence

Factor 2 = Knowledge of prescribed medications

Factor 3 = Barriers to medication adherence