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Table 2 Distribution of responses to ABQ-items*

From: Validation of the Adherence Barriers Questionnaire – an instrument for identifying potential risk factors associated with medication-related non-adherence

Item

Mean

Median

SD

Skewness

Item 1: “I fully understand what my doctor, nurse or the people at my pharmacy have explained to me so far”.+

1.58

1.00

0.700

1.082

Item 2: „I can mention the names of my medicines and their scope without hesitation”.+

2.33

2.00

0.975

0.149

Item 3: „I trust my doctor and agree to my therapy plan together with him”.+

1.28

1.00

0.512

1.846

Item 4: “My medications help me only if I take them absolutely regularly as recommended”.+

1.27

1.00

0.512

1.961

Item 5: „Medicines are all poisonous. You should avoid taking medicines at all if possible”.

1.82

2.00

0.902

0.849

Item 6: „I feel basically healthy. Therefore I am sometimes unsure whether I really have to take my medicines daily”.

1.79

2.00

0.869

0.971

Item 7: „I take my medicines every day automatically at a fixed time or on fixed occasions”.+

1.36

1.00

0.609

1.847

Item 8: „I feel that co-payments for medicines are a great burden”.

2.66

3.00

1.059

−0.135

Item 9: „I frequently forget things on an everyday basis”.

2.32

2.00

0.906

0.435

Item 10: „Generally I often feel bad, and sometimes I feel discouraged and depressed.”

2.24

2.00

0.908

0.329

Item 11: „I frequently have problems taking my medications or it is difficult for me to keep me on the accompanying conditions of the medication intake”.

1.73

1.50

0.902

1.184

Item 12: „I have to overcome obstacles to my healthcare”.

2.03

2.00

1.120

0.678

Item 13: „I really would need help on an everyday basis (and particularly related to my treatment with medicines). But I do not get any help”.

1.55

1.00

0.855

1.565

Item 14: „I am really frightened of the side effects of my medicines.”

1.91

2.00

0.854

0.797

Item 15a: „In case I already noticed or in case I would notice side effects related to my medicines: I have talked or would talk to my doctor about them as soon as possible”.+

1.28

1.00

0.605

2.543

Item 15b: „In case I already noticed or in case I would notice side effects related to my medicines: I have stopped/would stop my medications or took/would take less of them”.

1.80

1.50

0.976

1.005

  1. *Questionnaire was applied in German; translation into English has been done by the authors; score per item 1–4; n = 432 patients/respondents.
  2. +This item was reverse coded.
  3. Bold numbers represent maximum/minimum values.
  4. ABQ: Adherence Barriers Questionnaire, SD: Standard Deviation.