Table 3 Internal Consistency of the TSQM-9 Items
Time 1 | Time 2 | |||
|---|---|---|---|---|
Items and Domains | Item-total correlation | Cronbach's Alpha | Item-total correlation | Cronbach's Alpha |
Effectiveness | 0.935 | 0.924 | ||
How satisfied or dissatisfied are you with the ability of the medication to prevent or treat your condition? | 0.878 | 0.840 | ||
How satisfied or dissatisfied are you with the way the medication relieves your symptoms? | 0.904 | 0.892 | ||
How satisfied or dissatisfied are you with the amount of time it takes the medication to start working? | 0.819 | 0.805 | ||
Convenience | 0.911 | 0.915 | ||
How easy or difficult is it to use the medication in its current form? | 0.791 | 0.799 | ||
How easy or difficult is it to plan when you will use the medication each time? | 0.841 | 0.854 | ||
How convenient or inconvenient is it to take the medication as instructed? | 0.834 | 0.833 | ||
Global Satisfaction | 0.837 | 0.848 | ||
Overall, how confident are you that taking this medication is a good thing for you? | 0.755 | 0.768 | ||
How certain are you that the good things about your medication outweigh the bad things? | 0.684 | 0.698 | ||
Taking all things into account, how satisfied or dissatisfied are you with this medication? | 0.694 | 0.684 | ||