Diabetes distress and peripheral neuropathy are associated with medication non-adherence in individuals with type 2 diabetes in primary care

The role of depression and diabetes distress in glycemic control: A meta-analysis

AIMS

This study evaluated the associations between depression, diabetes distress, glycemic control (HbA1c), and self-care behaviours in individuals with diabetes. Findings on these relationships have been inconsistent, highlighting the need for systematic evaluation.

METHODS

Data from 61 studies involving 19,537 participants conducted between 2001 and 2024 were analysed using random-effects models. Subgroup analyses examined variations by diabetes type, geographic location, and measurement tools. Heterogeneity was assessed using I2 statistics.

RESULTS

Depression and diabetes distress were significantly associated with poorer glycemic control (r = 0.23, 95 % CI [0.15 to 0.31], p < 0.001) and reduced self-care behaviours (r = -0.19, 95 % CI [-0.28 to -0.10], p < 0.001). Stronger correlations were observed in mixed diabetes populations (r = 0.35, 95 % CI [0.30 to 0.40], I2 = 0 %) and in studies conducted in Europe (r = 0.28) and North America (r = 0.34). High heterogeneity (I2 = 97.24 %) was identified.

CONCLUSIONS

Depression and diabetes distress are associated with poorer glycemic control and reduced self-care behaviours. Findings highlight the need for standardized measures and longitudinal studies to explore mechanisms underlying these associations.

Factors associated with foot self-care behaviour and foot screening attendance in people with type 2 diabetes: a cross-sectional study in primary care

OBJECTIVES

To assess the factors associated with foot self-care behaviour and non-adherence to foot screening among patients with type 2 diabetes mellitus (T2DM).

DESIGN AND SETTING

A multicentre cross-sectional study was undertaken in seven primary care polyclinics in Singapore between October 2020 and December 2021.

PARTICIPANTS AND OUTCOMES

275 adults (male 55.3%) with T2DM were included and assessed with the foot self-care behaviour questionnaire, including two aspects of foot care behaviour-preventative behaviour and potential damaging behaviour, and foot care confidence scale. Non-adherence to diabetic foot screening (DFS) attendance was also collected and assessed.

RESULTS

The average preventive behaviour score was 0.65 (SD 0.13, range 0-1) and potential damaging behaviour score was 0.43 (SD 0.09, range 0-1). Patients with greater foot care confidence (β=0.272) and being married (β=0.141) were more likely to adopt preventive behaviours, while patients aged between 21 and 45 years (β=0.136), having shorter DM duration (<5 years) (β=0.142) and moderate foot risk category (β=0.138) were more likely to adopt potential damaging behaviours. Non-adherence to DFS attendance was prevalent up to 43.3%. Non-adherence was higher in patients with higher HbA1c ≥7% (adjusted OR (AOR) 1.878, 95% CI 1.090 to 3.235) and moderate foot risk category (AOR 2.935, 95% CI 1.426 to 7.744).

CONCLUSION

Self-efficacy and being married are associated with preventive behaviours, while clinical parameters (eg, HbA1c, duration of DM and foot risk category) and age were associated with potential damaging behaviours and non-adherence to DFS appointments. Longitudinal studies are needed to confirm the findings for developing foot behavioural education to support foot care behaviours for primary care patients with T2DM.

Coping with Type 2 diabetes: Commonly used strategies associated with mental wellbeing and treatment engagement

Type 2 diabetes (T2D) is a common, chronic condition. People with T2D often report poor mental wellbeing and treatment engagement, especially when stressed. Coping mechanisms may help manage stress, but it is crucial to identify which strategies are most common and (mal)adaptive. Using a psychometrically-informed approach and a series of pilot studies (n = 570) to develop and test the structural validity of a final item pool of coping strategies, a final study recruited 503 people with T2D through Prolific. Participants reported on coping, mental wellbeing (stress, anxiety and depressive symptoms), and treatment engagement (adherence, self-efficacy, A1C). All seven coping strategies (humor, self-blame, avoidance, support-seeking, positive mindset, religion/spirituality, and accessing resources) were psychometrically distinct and were associated with at least one indicator of treatment engagement, but fewer with wellbeing. After controlling for other variables, self-blame, avoidance, and positive mindset were the most robust predictors of both wellbeing and treatment engagement.

Impact of Patient Personality on Adherence to Oral Anticancer Medications: An Opportunity?

Adherence to prescribed oral anticancer therapy is an important determinant of patient outcomes, including progression-free and overall survival. While many factors (eg, medication side effects and out-of-pocket costs, problems with insurance authorization, and timely medication refills) can affect adherence, one that is relatively unexplored is the impact of a patient's attitude and personality. Patient personality influences medication adherence and persistence in nonmalignant chronic conditions such as cardiovascular disease and diabetes. In breast cancer and chronic myeloid leukemia, studies suggest that personality also affects adherence to oral chemotherapy which can be targeted to improve adherence. In this viewpoint, we highlight the opportunity of incorporating patient personality as interventions to oral cancer therapy adherence and discuss current barriers to implementation.

Oral Diabetes Medication Videos on Douyin: Analysis of Information Quality and User Comment Attitudes

BACKGROUND

Oral diabetes medications are important for glucose management in people with diabetes. Although there are many health-related videos on Douyin (the Chinese version of TikTok), the quality of information and the effects on user comment attitudes are unclear.

OBJECTIVE

The purpose of this study was to analyze the quality of information and user comment attitudes related to oral diabetes medication videos on Douyin.

METHODS

The key phrase "oral diabetes medications" was used to search Douyin on July 24, 2023, and the final samples included 138 videos. The basic information in the videos and the content of user comments were captured using Python. Each video was assigned a sentiment category based on the predominant positive, neutral, or negative attitude, as analyzed using the Weiciyun website. Two independent raters assessed the video content and information quality using the DISCERN (a tool for assessing health information quality) and PEMAT-A/V (Patient Education Materials Assessment Tool for Audiovisual Materials) instruments.

RESULTS

Doctors were the main source of the videos (136/138, 98.6%). The overall information quality of the videos was acceptable (median 3, IQR 1). Videos on Douyin showed relatively high understandability (median 75%, IQR 16.6%) but poor actionability (median 66.7%, IQR 48%). Most content on oral diabetes medications on Douyin related to the mechanism of action (75/138, 54.3%), precautions (70/138, 50.7%), and advantages (68/138, 49.3%), with limited content on indications (19/138, 13.8%) and contraindications (14/138, 10.1%). It was found that 10.1% (14/138) of the videos contained misinformation, of which 50% (7/14) were about the method of administration. Regarding user comment attitudes, the majority of videos garnered positive comments (81/138, 58.7%), followed by neutral comments (46/138, 33.3%) and negative comments (11/138, 8%). Multinomial logistic regression revealed 2 factors influencing a positive attitude: user comment count (adjusted odds ratio [OR] 1.00, 95% CI 1.00-1.00; P=.02) and information quality of treatment choices (adjusted OR 1.49, 95% CI 1.09-2.04; P=.01).

CONCLUSIONS

Despite most videos on Douyin being posted by doctors, with generally acceptable information quality and positive user comment attitudes, some content inaccuracies and poor actionability remain. Users show more positive attitudes toward videos with high-quality information about treatment choices. This study suggests that health care providers should ensure the accuracy and actionability of video content, enhance the information quality of treatment choices of oral diabetes medications to foster positive user attitudes, help users access accurate health information, and promote medication adherence.

A diabétesz okozta distressz és az életminőség összefüggései 2-es típusú cukorbetegséggel élők körében – szisztematikus irodalmi áttekintés

Háttér: Cukorbetegséggel élni megterhelő. Ezért, nem meglepő módon, ez a betegség nagyon gyakran érzelmi distresszt okoz, amelyet betegségre specifikusan diabétesz okozta distressznek hívunk. A cukorbetegséggel élők esetében a negatív érzelmi tünetek azonban nemcsak a pszichés jóllétre hatnak negatívan, hanem a magasabb distresszt megélő betegek alacsonyabb adherenciával jellemezhetőek, rosszabb glikémiás kontrollal rendelkeznek, és körükben magasabb a mortalitás is. A krónikus betegségek, így a cukorbetegség is nagymértékben rontja a szubjektív életminőséget, ráadásul a vonatkozó kutatások eredményei alapján a diabétesz okozta magasabb distressz rosszabb észlelt életminőséggel is együtt jár, és e két tényező külön-külön is, de együttesen is prediktora egyéb, a cukorbetegség önmenedzselésével kapcsolatos változóknak, mint amilyen például a glikémiás kontroll vagy az adherencia. Célkitűzés: Azonosítani néhány tényezőt és rizikófaktort amelyek a 2-es típusú cukorbetegséggel élő felnőttek körében befolyásolják a diabétesz okozta distresszt és az életminőséget. Módszerek: Tanulmányunkat a szisztematikus irodalomkutatás módszerével készítettük, angol nyelvű cikkeket keresve az EBSCO és az Embase adatbázisokban. Eredmények: A diabétesz distresszt és a betegséggel kapcsolatos életminőséget befolyásoló tényezők és rizikófaktorok egy része az ismertetett kutatások alapján beazonosítható, és általuk pontosabban meghatározhatók olyan beavatkozási pontok, amelyekkel a diabétesszel összefüggő distressz és annak következményei eredményesen csökkenthetőek.

The role of emotion dysregulation in self-management behaviors among adults with type 2 diabetes

Suboptimal disease self-management among adults with type 2 diabetes is associated with greater risk of diabetes related health complications and mortality. Emotional distress has been linked with poor diabetes self-management; however, few studies have examined the role of emotion dysregulation in diabetes management. The purpose of this study was to examine the relations between different facets of emotion dysregulation and diabetes self-management behaviors among a sample of 373 adults with type 2 diabetes. Separate median regression and binary logistic regression models were used to examine the association of emotion dysregulation facets and each diabetes self-care behavior (i.e., medication nonadherence, diet, exercise, self-monitoring of blood glucose (SMBG), foot care, and smoking). Generally, greater difficulties in emotion regulation were associated with poorer self-management behaviors. However, several facets of emotion dysregulation were linked with better self-management behaviors. Addressing emotion dysregulation among adults with type 2 diabetes has the potential to improve diabetes related self-management.

Effect of Food Consumption on the Pharmacokinetics, Safety, and Tolerability of Once-Daily Orally Administered Orforglipron (LY3502970), a Non-peptide GLP-1 Receptor Agonist

INTRODUCTION

We assessed the effect of the prandial state on the pharmacokinetics, safety, and tolerability of single and multiple doses of orforglipron (LY3502970), an oral, non-peptide glucagon-like peptide 1 receptor agonist (GLP-1 RA), in two studies (A and B).

METHODS

Study A and study B were phase 1, randomized, crossover studies in healthy adults aged 18-65 years and 21-70 years, respectively. Participants received single (3 mg, study A) or multiple (16 mg, study B) oral doses of orforglipron under fasted and fed conditions. Blood samples were collected pre- and postdose to assess area under the concentration-time curve (AUC), maximum observed drug concentration (Cmax), time of Cmax (tmax), and half-life (t1/2) associated with terminal rate constant. AUC and Cmax were analyzed using a linear mixed-effects model. Treatment differences were presented as ratios of geometric least squares means (GLSM). Treatment-emergent adverse events (TEAEs), adverse events of special interest, and serious adverse events were assessed.

RESULTS

Study A included 12 participants (mean age 45.0 years; male 66.7%); study B included 34 participants (mean age 42.8 years; male 88.2%). GLSM AUC and Cmax were lower by 23.7% and 23.2% in study A, and 17.6% and 20.9% in study B, in the fed versus fasted states, respectively. In both studies, t1/2 and median tmax were comparable between fed and fasted states. The majority of TEAEs in both studies were gastrointestinal tract-related conditions. No serious adverse events or deaths were reported in either study.

CONCLUSION

The observed pharmacokinetic differences due to the prandial state are unlikely to contribute to clinically meaningful differences in the efficacy of orforglipron. The safety profile was consistent with the known profiles of other GLP-1 RAs. Given the absence of prandial restrictions, orforglipron may emerge as a convenient oral treatment option for patients with type 2 diabetes or obesity.

TRIAL REGISTRATION

ClinicalTrials.gov identifiers, NCT03929744 and NCT05110794.

Assessing medication adherence and their associated factors amongst type-2 diabetes mellitus patients of Jazan Province, Saudi Arabia: A single-center, cross-sectional study

Background

The prevalence of type 2 diabetes mellitus (T2DM) globally is reaching epidemic proportions. By 2035, it is projected to increase to 417 million, which is of significant concern as T2DM represents the most oversized budget item in many healthcare systems, primarily due to the high rates of morbidity and mortality associated with the disease. The worldwide cost burden of T2DM has been inexorably growing. A key contributor to the remarkably high morbidity and mortality rates is poor glycemic control potentially associated with medication non-adherence.

Aim

The present research's main objective included assessing medication adherence among patients with T2DM in a single center in Jazan Province.

Methods

Three hundred nine patients with T2DM participated in a cross-sectional survey over three months (September to November 2022). The study participants comprised 50.8 % (females) and 49.2 % (males), with a mean age of 44.12 years (SD ± 12.70). A 31-item self-report questionnaire was used for data collection.

Results

Sixty-six percent of the sample were found to be adherent to their T2DM therapy. A positive association was noticed between the GMAS score and the participant's age (r = 0.24; p < 0.01). The participants' medication adherence was significantly associated with having age above 50 years (χ2 = 13.62; p = 0.001), residing in urban localities (χ2 = 21.37; p < 0.001), being married (χ2 = 12.80; p = 0.002), having glycated hemoglobin level more than 8 % (χ2 = 6.99; p = 0.03) and taking between one to three medications per day (χ2 = 17.63; p < 0.001).

Conclusion

The majority of T2DM patients in the present study were found adherent to their anti-diabetic medications, particularly older patients. Future studies should focus on exploring the reasons for the reported high adherence among older patients and non-adherence among younger patients, as this could facilitate the development of a strategy to enhance adherence.

The mediating role of diabetes stigma and self-efficacy in relieving diabetes distress among patients with type 2 diabetes mellitus: a multicenter cross-sectional study

Background

Patients with diabetes mellitus often suffer from diabetes distress. Social support and certain psychological factors potentially influence diabetes distress, but studies exploring the mechanisms underlying these relationships are scarce.

Objectives

To reveal the associations between social support, diabetes stigma, diabetes self-efficacy, and diabetes distress among patients with type 2 diabetes and the underlying mechanisms linking these variables.

Design and methods

A multicenter cross-sectional study was adopted and a sample of 431 patients with type 2 diabetes was investigated. Social support, diabetes stigma, diabetes self-efficacy, and diabetes distress were surveyed with the Perceived Social Support Scale, Type 2 Diabetes Stigma Assessment Scale, Self-Efficacy for Diabetes Scale, and Diabetes Distress Scale, respectively. The hypothesized model was verified using structural equation modeling.

Results

Social support and diabetes stigma had direct associations with diabetes distress. Diabetes stigma mediated the association between social support and diabetes distress, and the association between diabetes self-efficacy and diabetes distress. Diabetes stigma and self-efficacy exerted a chain mediation effect on the association between social support and diabetes distress.

Conclusion

Social support and diabetes stigma were significant predictors of diabetes distress. Diabetes stigma and self-efficacy play essential mediating roles in relieving diabetes distress. This can provide guidance for the development of evidence- and theory-based interventions. Culturally sensitive interventions that aim to provide ongoing social support, decrease diabetes stigma, and enhance self-efficacy have the potential to relieve diabetes distress.

Cognitive behavior therapy for diabetes distress, depression, health anxiety, quality of life and treatment adherence among patients with type-II diabetes mellitus: a randomized control trial

OBJECTIVE

Diabetes distress typically causes depressive symptoms; common comorbidity of diabetes unpleasantly affects patients' medical and psychological functions. Psychotherapeutic interventions are effective treatments to treat depressive symptoms and to improve the quality of life in many chronic diseases including diabetes. The present study investigated the efficacy of cognitive behavior therapy (CBT) to treat depressive symptoms in patients with type 2 diabetes mellitus (T2DM) using experimental and waitlist control conditions.

MATERIALS AND METHODS

A total of 130 diagnosed patients with T2DM were taken from outdoor patients services of different hospitals in Faisalabad. Ninety patients met the eligibility criteria and were randomly assigned to experimental (n = 45) and waitlist control (n = 45) conditions. All the patients completed clinical interviews and assessment measures at pre-and post-assessment stages (16 weeks intervals). Medical consultants at the respective hospitals diagnosed the patients on the base of their medical reports and then referred those patients to us. Then we used different scales to assess primary and secondary outcomes: Diabetes Distress Scale (DDS) and Patient Health Questionnaire (PHQ) to assess primary outcomes, and a Short Health Anxiety Inventory (SHAI), a Revised Version of the Diabetes Quality of Life Questionnaire (DQLQ), and a General Medication Adherence Scale (GMAS) were used to investigate secondary outcomes. Repeated measure ANOVA was used to analyze the results.

RESULTS

The findings indicated that patients who received CBT got a significant reduction in their diabetes distress F(1,60) = 222.710, P < 0.001, η² = .788), depressive symptoms F(1,60) = 94.436, P < 0.001, η² = .611), health anxiety F(1,60) = 201.915, P < .0.001, η² = 771), and a significant improvement in their quality of life F(1,60) = 83.352, P < 0.001, η² = .581), treatment adherence F(1,60) = 67.579, P < 0.001, η² = .566) and physical activity schedule F(1,60) = 164.245, P < .0.001, η² = .736 as compared to the patients in waitlist control condition.

CONCLUSION

It is concluded that cognitive behavior therapy is an effective and promising intervention for depressive symptoms, diabetes distress, and health anxiety which also helps the person to promote quality of life, treatment adherence and physical activity.

Diabetes-related distress and associated factors among adults with diabetes in Germany: Results of the nationwide study "Disease knowledge and information needs - Diabetes mellitus 2017"

BACKGROUND

Diabetes-related distress (DRD) can affect diabetes management adversely. In lack of population-based data, the frequency and determinants of DRD among adults with diabetes in Germany remain controversial.

METHODS

This study included 1367 adults with diabetes who participated in a nationwide health telephone survey conducted among German adults aged 18 years and older in 2017. The short form of the Problem Areas in Diabetes (PAID-5) scale was used to assess DRD. The associations of high DRD (PAID-5 sum score ≥ 8) with socio-demographics, diabetes-related risk factors, diabetes clinical characteristics as well as quality of self-care and chronic illness care assessed by patients were tested in multivariable logistic regression models.

RESULTS

The overall DRD prevalence was 15.1% (95% confidence intervals, 95% CIs, 12.5-18.0%) with no significant difference between men (14.7%, 95% CIs 11.2-19.1%) and women (15.4%, 11.9-19.8%). In multivariable analyses, DRD was significantly associated with younger age (odds ratio 0.96, 95% CIs 0.94-0.98, per year), immigration background (2.26, 1.16-4.42), current smoking (2.06, 1.14-3.70), insulin use (2.57, 1.45-4.56), and the presence of diabetes-specific complications (1.80, 1.10-2.94) or depressive symptoms (5.34, 3.24-8.81). Among those with depressive symptoms (18,4% of the study population), 38.3% also had DRD, which accounted for 7.0% (95% CIs 5.3-9.3%) of the study population.

CONCLUSION

DRD is a common health problem among adults with diabetes in Germany, and highly correlates with depressive symptoms, current smoking, immigration background, and insulin use. Addressing DRD needs to become an integrative part of ambulatory diabetes care.

Fully Convolutional Neural Network Deep Learning Model Fully in Patients with Type 2 Diabetes Complicated with Peripheral Neuropathy by High-Frequency Ultrasound Image

This study was aimed at exploring the diagnostic value of high-frequency ultrasound imaging based on a fully convolutional neural network (FCN) for peripheral neuropathy in patients with type 2 diabetes (T2D). A total of 70 patients with T2D mellitus were selected and divided into a lesion group (n = 31) and a nonlesion group (n = 39) according to the type of peripheral neuropathy. In addition, 30 healthy people were used as controls. Hypervoxel-based and FCN-based high-frequency ultrasound images were used to examine the three groups of patients to evaluate their diagnostic performance and to compare the changes of peripheral nerves and ultrasound characteristics. The results showed that the Dice coefficient (92.7) and mean intersection over union (mIOU) (82.6) of the proposed algorithm after image segmentation were the largest, and the Hausdorff distance (7.6) and absolute volume difference (AVD) (8.9) were the smallest. The high-frequency ultrasound based on the segmentation algorithm showed higher diagnostic accuracy (94.0% vs. 86.0%), sensitivity (87.1% vs. 67.7%), specificity (97.1% vs. 94.2%), positive predictive value (93.1% vs. 86.7%), and negative predictive value (94.4% vs. 84.0%) (P < 0.05). There were significant differences in the detection values of the three major nerve segments of the upper limbs in the control group, the lesion group, and the nonlesion group (P < 0.05). Compared with the nonlesion group, the patients in the lesion group were more likely to have reduced nerve bundle echo, blurred reticular structure, thickened epineurium, and unclear borders of adjacent tissues (P < 0.05). In summary, the high-frequency ultrasound processed by the algorithm proposed in this study showed a high diagnostic value for peripheral neuropathy in T2D patients, and high-frequency ultrasound can be used to evaluate the morphological changes of peripheral nerves in T2D patients.

Exploring of Determinants Factors of Anti-Diabetic Medication Adherence in Several Regions of Asia - A Systematic Review

BACKGROUND

The determinants of medication adherence in people with diabetes may differ between populations of an area due to social environment, cultural beliefs, socioeconomic conditions, education, and many other factors differences.

OBJECTIVE

Therefore, this study aims to explore, identify and classify the determinants of medication adherence in several Asian regions.

METHODS

A systematic literature review was conducted to gain insight into the determinants of medication adherence. Seven relevant databases (EBSCO, ProQuest, PubMed, ScienceDirect, Scopus, Wiley, dan Taylor and Francis) and hand searching methods were conducted from January 2011 to December 2020. Keywords were compiled based on the PICO method. The selection process used the PRISMA guidelines based on inclusion, and the quality was assessed using Crowe's critical assessment tool. Textual summaries and a conceptual framework model of medication adherence were proposed to aid in the understanding of the factors influencing medication adherence.

RESULTS

Twenty-six articles from countries in several Asian regions were further analyzed. Most studies on type 2 diabetes patients in India used the MMAS-8 scale, and cross-sectional study is the most frequently used research design. The medication adherence rate among diabetic patients was low to moderate. Fifty-one specific factors identified were further categorized into twenty-three subdomains and six domains. Furthermore, the determinants were classified into four categories: inconsistent factors, positively related factors, negatively related factors, and non-associated factors. In most studies, patient-related factors dominate the association with medication adherence. This domain relates to patient-specific demographics, physiological feelings, knowledge, perceptions and beliefs, comorbidities, and other factors related to the patient. Several limitations in this review need to be considered for further research.

CONCLUSION

Medication adherence to diabetic therapy is a complex phenomenon. Most determinants produced disparate findings in terms of statistical significance. The identified factors can serve various goals related to medication adherence. Policymakers and health care providers should consider patient-related factors.

Medication Adherence and Associated Factors in Patients With Type 2 Diabetes: A Structural Equation Model

Background: The number of patients with type 2 diabetes (T2D) is increasing. Medication treatment is of great importance to stabilize blood glucose. Previous studies have reported that neuroticism, self-efficacy, and social support are factors associated with medication adherence, but few studies have fully investigated the mechanisms between these factors and medication adherence in patients with T2D. Purpose: To explore the prevalence of medication adherence and the factors associated with medication adherence in patients with T2D. Methods: A cross-sectional study consisting of 483 patients with T2D was conducted from July to December 2020. Questionnaires containing sociodemographic and clinical characteristics, the Morisky Medication Adherence Scale-8 (MMAS-8), the neuroticism subscale of the Eysenck Personality Questionnaire-Revised Short Scale (EPQ-RS), the Multidimensional Scale of Perceived Social Support (MSPSS), and the Diabetes Management Self-efficacy Scale (DMSES) were used to collect data. The structural equation model (SEM) was used to test the hypotheses. Results: This study included 305 (63.1%) medication adherence and 178 (36.9%) medication non-adherence patients with T2D. Social support directly influenced medication adherence (β = 0.115, P = 0.029) and indirectly influenced medication adherence through self-efficacy (β = 0.044, P = 0.016). Self-efficacy directly influenced medication adherence (β = 0.139, P = 0.023). Neuroticism indirectly affected medication adherence through social support (β = -0.027, P = 0.023) and self-efficacy (β = -0.019, P = 0.014). Moreover, there was a sequential mediating effect of social support and self-efficacy on the relationship between neuroticism and medication adherence (β = -0.010, P = 0.012). After controlling for age and gender, similar results were obtained. The model fit indices showed a good fit. Conclusions: The medication adherence of patients with T2D needs to be improved. Neuroticism, social support, and self-efficacy had direct or indirect effects on medication adherence in patients with T2D. Healthcare providers should comprehensively develop intervention programs based on neuroticism, social support, and self-efficacy to improve medication adherence in patients with T2D.