Factors Influencing Insulin Adherence among Outpatients with Type 2 Diabetes Mellitus and the Impact of Pharmaceutical Intervention: A Randomized Clinical Trial

Table 3

Assignment of independent variables in the logistic regression model.

Variables	Assignment
	0	1	2	3	4	5
Age (year)	18∼29	30∼39	40∼49	50∼59	60∼70
Diabetes duration (year)	0∼5	6∼10	>10
Medical insurance	Self-pay	Employee essential medical insurance	Free medical care	Resident essential medical insurance
HbA1c (%)	<6.5	6.5∼7.0	7.1∼9.9	10.0∼12.0	>12.0
Diabetes and medication knowledge	0∼5	6∼7	8∼9	10∼11	12∼13	14∼15
Management of self-efficacy	<0.40	0.40∼0.54	0.55∼0.69	0.70∼0.84	≥0.85
Medication beliefs	<−5	−5∼−2	−1∼2	3∼6	≥7

Based on previous research and clinical experience, continuous variables among the influencing factors were transformed into categorical variables. Values were assigned to each level, facilitating subsequent logistic regression analysis.