Table 4 Estimates of Cronbach’s Alpha (α), Pearson’s correlation coefficient (r) for Simplified Medication Questionnaire (SMAQ) scores at T1, T2 and for overall sample

Group

Cronbach’s Coefficient alpha (α)

T1 control

0.66

T1 intervention

0.68

T2 control

0.75

T2 intervention

0.75

All groups

0.72

SMAQ item

Pearson’s Correlation (r)

Do you ever forget to take your medicine?

0.78

Are you careless at times about taking your medicine?

0.49

Sometimes if you feel worse, do you stop taking your medicines?

0.52

Thinking about the last week. How often have you not taken your medicine?

0.48

Did you not take any of your medicine over the past weekend?

0.76

Over the past 3 months, how many days have you not taken any medicine at all?

0.80