Strengths and limitations
One of the major advantages of this study is to determine which knowledge patients lacked and the erroneous steps of insulin injection, as well as related factors in order to shape the patient education and target specific patients for education. However, some limitations should be considered when interpreting the results. Firstly, KAP questionnaire was focused only on insulin pen use, but not covered a broader domain in treatment of diabetes. Secondly, patients in our study used only two types of insulin pens (Insulin Aspart 70/30 and Insulin Glargine) because of the hospital’s limited resources.