Table 3 Item characteristics CDMS Patient (N = 588) and Staff (N = 570) versions

1 Important decisions.^a

1.95 (1.36)

0.524

0.837

2.71 (1.27)

0.767

0.870

2 Comply with clinician’s advice.^a

1.58 (1.18)

0.520

0.837

2.20 (1.19)

0.668

0.876

3 Treatment in the clinic.^a

1.85 (1.34)

0.552

0.835

2.58 (1.22)

0.695

0.874

4 Every day problems.

2.61 (1.08)

0.140

0.857

2.38 (1.10)

0.302

0.894

5 More control when worsening.^a

0.97 (0.98)

0.445

0.842

1.13 (0.94)

0.453

0.885

6 See clinician how often.

2.00 (1.23)

0.413

0.844

1.39 (0.96)

0.341

0.890

7 Return to work.

2.24 (0.89)

0.453

0.842

1.95 (0.60)

0.545

0.882

8 Suitable occupation.

2.46 (0.91)

0.368

0.845

1.92 (0.55)

0.325

0.888

9 Amount of work.

2.42 (0.97)

0.405

0.844

2.04 (0.63)

0.508

0.883

10 See a doctor.

2.40 (1.29)

0.393

0.845

2.17 (0.95)

0.485

0.884

11Dosage of medication.

1.35 (1.06)

0.573

0.835

2.66 (0.73)

0.697

0.876

12 Another medication.

1.28 (1.02)

0.612

0.833

2.68 (0.77)

0.701

0.876

13 Medication at all.

1.53 (1.20)

0.617

0.831

2.60 (0.76)

0.741

0.874

14 Form of medication.

1.83 (1.26)

0.555

0.835

2.18 (0.78)

0.563

0.881

15 Duration of medication.

1.24 (1.04)

0.663

0.830

2.70 (0.78)

0.737

0.874

Information (IN) sub-scale

Mean (SD)

CITC

α

Mean (SD)

CITC

α

16 Informed about the facts.

3.14 (0.94)

0.506

0.660

2.63 (0.89)

0.350

0.717

17 Know exactly.

3.29 (0.86)

0.617

0.630

3.04 (0.74)

0.638

0.631

18 Explain purpose.

3.41 (0.74)

0.623

0.639

3.43 (0.63)

0.550

0.665

19 Information when asked for.^a

2.64 (1.23)

0.121

0.807

3.03 (0.91)

0.232

0.753

20 Side effects.

3.23 (0.97)

0.467

0.672

2.55 (0.97)

0.516

0.664

21 Various treatment methods.

3.39 (0.80)

0.587

0.643

3.25 (0.70)

0.565

0.656