Design and development of the MacTSQ measure of satisfaction with treatment for macular conditions used within the IVAN trial

Journal of Patient-Reported Outcomes

Table 5 MacTSQ Single scale forced one factor: Principal axis factoring factor loadings and internal consistency

Item N	Item	Factor loadings	Cronbach’s alpha if item deleted
9	Safety	0.680	0.790
6	Apprehensive	0.637	0.788
11	Continue	0.612	0.800
14	Length of course	0.600	0.794
3	Discomfort or pain	0.540	0.796
1	Treatment	0.531	0.804
15	Encourage others	0.528	0.806
4	Treatment working	0.508	0.803
13	Time at clinic	0.464	0.810
2	Side effects	0.461	0.804
5	Unpleasant	0.442	0.806
10	Information	0.420	0.811