INS and diabetes mellitus: Therefore, the primary objective of this study was to investigate the impact of insulin glargine versus NPH insulin on a composite Diabetes Related Quality of Life score (DRQoL), consisting of a standardized and unweighted Insulin Treatment Experience Questionnaire Score (ITEQ), a Problem Areas in Diabetes (PAID) questionnaire score, and the mental health score in the Short Form (SF)-12® Health Survey, in a randomized controlled study.