Table 1.

Reliability of the five independent variables and dependent variable.

Variable	No. of items	Cronbach’s alpha (α)
Internal psychological	6	0.58
External psychological	2	0.61
Internal physical	5	0.57
External physical	4	0.61
Educational	3	0.55
SMBG adherence	2	0.92

SMBG: self-monitoring of blood glucose.