TABLE 3.

Corrected item-total correlation for items in SCADS.

Item No	Description of item	SCADS with ten (10) items
Overall Cronbach’s alpha (α) = 0.707		Corrected item-total correlation	Cronbach’s alpha (α) if item deleted
Q1	Admitting injecting bDMARDs following the prescribed dose	0.281	0.699
Q2	Verifying strength of bDMARDs taken	0.306	0.698
Q3	Claiming to inject bDMARDs according to prescribed frequency	0.590	0.650
Q4	Verifying frequency of bDMARDs injection taken	0.590	0.650
Q5	Claiming to inject bDMARDs according to specific day or date	0.500	0.665
Q6	Verifying the specific day or date of bDMARDs injection taken	0.500	0.665
Q7	Forgetfulness in injecting bDMARDs	0.300	0.696
Q8	Continue injecting bDMARDs even though feeling better with no joint pain	0.286	0.696
Q9	The commitment of having bDMARDs injection when traveling abroad	0.244	0.707
Q10	Temporary discontinuation of bDMARDs when having an infection	0.283	0.713