Table 2: Principal components analysis followed by varimax rotation factor loadings and item-total correlations of items of the drug use health beliefs scale (n = 210).

Scale items Corrected item-total correlation Cronbach's alpha of items Factor loading of items Variance
Perceived susceptibility 0.89 16.4%
1. If I use non prescription drug, likelihood harm is very high for me. 0.725 0.873 0.670
2. If I use a non prescription drug, drug allergy is likely high. 0.751 0.869 0.659
3. If I use non prescription drug, I possibly will death. 0.645 0.889 0.687
4. If I use non-prescription drug, my body and organs damage. 0.726 0.873 0.652
5. Others suggest the drugs will harm to me. 0.726 0.873 0.708
6. I do not suggest my drug to others for causing damage. 0.740 0.871 0.730
Perceived severity 0.80 14.5%
7. A drug allergy scares me. 0.522 0.786 0.618
8. When I think damage/adverse of drugs to body, I will be stress. 0.565 0.777 0.797
9. I am afraid of think allergy of non prescription drug. 0.657 0.755 0.747
10. I live problems concerning side effects/damage of non-prescription drug to be continuing a very long time. 0.677 0.753 0.631
11. If I use non-prescription drug, my concrete surroundings can undermine confidence to me in my environmental relationship. 0.436 0.808 0.475
12. If I use incorrect and non-prescription drug, it can do serious changes in my life (loss of vision). 0.561 0.777 0.506
Health motivation 0.92 13.7%
13. I would like to make early discovery my health problems. 0.755 0.921 0.691
14. To be healthy is very important for me. 0.825 0.911 0.774
15. I investigate new information to improve my health. 0.771 0.918 0.717
16. I learn new information for use of correct drug. 0.790 0.916 0.723
17. I think it is important I do behaviours and knowledge to be improve my health. 0.851 0.908 0.803
18. I use prescription drug. 0.766 0.919 0.691
Perceived benefits 0.90 10.0%
19. To use prescription drug for my benefit. 0.838 0.861 0.825
20. To use prescription drug provides my healing. 0.798 0.875 0.785
21. To use prescription drug, drug poisoning (allergies) can decrease or completely blocked. 0.758 0.889 0.780
22. To use prescription drug protects my legal rights. 0.764 0.888 0.742
Perceived barriers 0.84 9.1%
23. To take prescription drug very difficult for me due to process. 0.536 0.830 0.502
24. Procedures of take prescription drug get my very time. 0.608 0.815 0.598
25. No one will help me for taking prescription drug. 0.710 0.795 0.727
26. I do not have to comply tedious procedures since non prescription drugs heal me. 0.681 0.801 0.679
27. If drug make heal, prescription is not needed for drug. 0.550 0.827 0.513
28. I do not have time to get prescription drug. 0.626 0.812 0.563
Self-efficacy 0.93 5.2%
29. I know the procedure of getting prescription drug. 0.580 0.944 0.555
30. I am able to use my drug correctly. 0.859 0.913 0.819
31. I can heal using my drug correctly. 0.867 0.912 0.827
32. I can get drug information from explained to me and I can correct use my drug. 0.742 0.925 0.693
33. I can get the information required since I can correct use drug. 0.864 0.913 0.824
34. I can use my drugs correct doses. 0.847 0.915 0.844
35. I can use my drug recommended time intervals. 0.767 0.922 0.737
Total 0.91 69.1%