Table 3 Identified subscale by the means of factor analysis
Component 1 “Unintentional” | Component 2 “Knowledge” | Component 3 “Intentional” | |
|---|---|---|---|
Eigenvalue | 3.313 | 1.329 | 1.314 |
Variance explained | 22.086% | 8.860% | 8.759% |
Possible range of subscale score | 7–28 | 5–20 | 3–12 |
Observed range of subscale score | 7–27 | 5–11 | 3–12 |
N (%) of patients with at least one barrier | 284 (76.8%) | 38 (10.3%) | 141 (38.1%) |
Items | |||
Item 1: “I fully understand what my doctor, nurse or pharmacist has explained to me regarding my medication therapy.” | 0.642 | ||
Item 2: “I can mention the names of my medicines and their scope without hesitation.” | 0.478 | ||
Item 3: “I trust my doctor and agree on my therapy plan together with him.” | 0.696 | ||
Item 4: “My medications only help me if I take them on a strict regular basis.” | 0.496 | ||
Item 5: “Medicines are all poisonous. You should avoid taking medicines at all if possible.” | 0.563 | ||
Item 6: “I feel basically healthy. Therefore, I am sometimes unsure whether I really have to take my medicines daily.” | 0.749 | ||
Item 7: “I take my medicines automatically at a fixed time or on fixed occasions every day (e.g. at meal times, before going to bed).” | 0.477 | ||
Item 8: “I feel that co-payments for medication are a great burden.” | 0.460 | ||
Item 9: “Generally, I find it unpleasant when other people notice my medication intake.” | 0.554 | ||
Item 10: “I frequently forget things on a daily basis.” | 0.613 | ||
Item 11: “Generally, I often feel bad, and sometimes I feel discouraged and depressed.” | 0.651 | ||
Item 12: “I frequently have problems taking my medications (e.g. swallowing, opening the package, dividing the tablets) or it is difficult for me to adhere to the accompanying conditions of the medication intake (e.g. on an empty stomach, with food or alcohol restrictions).” | 0.568 | ||
Item 13: “I have difficulties adhering to my treatment plan, especially when I am away from home (e.g. at weekends, on business trips or holidays).” | 0.468 | ||
Item 15: “I am really frightened about the side effects of my medicines.” | 0.639 | ||
Item 17: “In case I have already noticed or in case I were to notice side effects related to my medicines: I have stopped/would stop taking my medications or took/would take less of them.” | 0.693 | ||