The status of stigma in patients with type 2 diabetes mellitus and its association with medication adherence and quality of life in China: A cross-sectional study

Type 2 diabetes mellitus (T2DM) is a chronic, lifelong disease that can negatively affect patients’ mental health and quality of life (QoL). A notable proportion of patients with T2DM worldwide have experienced stigma through instances of discrimination, unfair social treatment and lack of promotion opportunities. Stigma refers to the negative emotional experience of people with illness, often mixed with self-stigmatization. Stigma remains an obstacle to patients’ self-management, its association with patients with T2DM on medication adherence and QoL in China are unknown. Therefore, the objective of the study was to analyze the status of stigma in patients with T2DM and its association with medication adherence and QoL in China. A cross-sectional, observational study among 346 inpatients with T2DM in 2 tertiary-level hospitals in Chengdu, China, was conducted using a general data questionnaire, Chinese version type 2 diabetes stigma scale (DSAS-2), Morisky medication adherence scale (MMAS-8) and diabetic QoL specificity scale by convenient sampling method from January to August 2020. The total score and scores for the 3 dimensions of stigma, treated differently, blame and judgment, and self-stigma, were 54.30 ± 12.22, 16.57 ± 4.06, 20.92 ± 4.42, 16.82 ± 4.78, respectively. The scores for medication adherence and QoL were 5.43 ± 1.8 and 73.24 ± 9.38. Pearson correlation analysis showed that the total score of stigma and the scores of each dimension were negatively weak-correlated with the score of medication adherence (r = −0.158 to −0.121, P < .05), and positively moderate-correlated with the score of QoL (R = 0.073 to 0.614, P < .05). Stigma of patients with T2DM was negatively associated with medication adherence, and negatively associated with QoL, namely, the stronger the stigma, the worse the medication adherence and QoL. The results of the hierarchical regression analysis revealed that stigma independently explained 8.8% of the variation in medication adherence and 9.4% to 38.8% of the variation in QoL. The stigma of patients with T2DM was at a moderate degree and negatively correlated with medication adherence and QoL, it is necessary to pay more attention to relieve stigma and negative emotions timely, in order to improve patients’ mental health and QoL.