Table 3 Results from patient call tracker

 Request for more information

53

37.3

 Concern about the risk of adverse event

32

22.5

 Adverse event to a non-study drug

4

2.8

 Opt-out of switch due to general ill-health

6

4.2

 Opt-out of switch for a non-specific reason

55

38.7

 General feedback on the letter

6

4.2

 Concern about ethical aspects of the study

4

2.8

 Prepared to switch

43

30.3

 Not prepared to switch

99

69.7

Total number of patients

142