Determinants of medication adherence among Iranian patients with type 2 diabetes: An application of health action process approach

Impact of health literacy and illness perception on medication adherence among older adults with hypertension in Iran: a cross-sectional study

Background

Adherence to medication is an essential factor in controlling and reducing the side effects of non-communicable diseases, particularly hypertension. Medication adherence varies in older adults due to the effects of various factors. The research aimed to examine the determinants of medication adherence among older adults with hypertension.

Methods

This cross-sectional study was performed among 300 people aged 60 years or older referring to health centers in Sarab, Iran, between February and May 2023. To collect data, valid and reliable tools were applied.

Results

There was a significant association between age groups, level of education, and monthly income status with adherence to medication (p-value <0.05). According to the results of hierarchical regression, demographic variables collectively explained 3.2% of the variance in adherence to therapeutic regimens (p-value = 0.143). The inclusion of illness perception at step 2, along with demographic variables, led to a further significant increase in 9.6% of the variance (p-value <0.001). In the final step, health literacy dimensions were added, which explained an additional 8.7% of the variance (p-value <0.001). In total, demographic variables, illness perception, and HL dimensions explained 21.5% of the variance in adherence to therapeutic regimens.

Conclusion

According to the results, demographic variables, illness perception, and HL dimensions were the main determinants of medication adherence among older adults. Health educators should focus on creating interventions that improve medication adherence by addressing illness perception and health literacy dimensions in this particular population.

Influencing factors of health screening among retirees: an extended TPB approach

Background

Health screenings are promoted worldwide as they help detect and prevent overall health issues. Despite expanding coverage, the participation rate among the retired population has not significantly increased. Given the special role of health screenings in promoting health and healthy aging, understanding the behavioral intentions, and influencing factors of retirees' voluntary participation in health screenings is crucial. This study aims to explore the participation intentions in health screenings among the Chinese retired population by integrating the Theory of Planned Behavior (TPB) and Self-Efficacy (SE).

Methods

This study used a cross-sectional design to conduct an online questionnaire among 311 retirees in 2023. The questionnaire, tailored for the Chinese retired population, combines the TPB theory and Self-Efficacy theory, including demographic structure, the basic structure of TPB, and SE.

Results

A Structural Equation Modeling (SEM) approach was used to identify factors related to health screening behaviors. Of the respondents, 311 completed the survey (88.9% response rate). The most crucial determinant of health examination behavior was behavioral intention, with a correlation score of (1.524, p < 0.001). Significant correlates of behavioral intention included Subjective Norms (SN) and Self-Efficacy (SE), followed by Perceived Behavioral Control (PBC) and Attitude (AT), with correlation scores of (0.401, p < 0.001), (0.339, p < 0.001), (0.082, p < 0.001), and (0.060, p < 0.05), respectively.

Conclusion

This study provides insights for enhancing the willingness and behavior of retirees to participate in health screenings.

The mediating effect of self-efficacy on the relationship between social support and medication adherence in adults with type 2 diabetes

Objective

To evaluate the status of medication adherence in diabetic patients and its effective factors.

Methods

A cross-sectional descriptive study was conducted with 170 diabetic patients in Iran. Participants were assessed for medication adherence, self-efficacy, and social support. Descriptive statistics, bivariate analyses, and multiple stepwise regression were conducted to explore predictors for medication adherence.

Results

Regression analysis showed that 48% of medication adherence changes stemmed from the four variables including social support, self-efficacy, income, and education levels, (R2adj = 0.480, F = 39.943, p < 0.001). According to the model, the highest effects were related to income level (β = 0.332, t = 5.493, p ⩽ 0.001) and self-efficacy (β = 0.330, t = 4.789, p ⩽ 0.001), respectively. Based on the final model, only the social support variable showed no significant relationship with adherence (β = 0.002, t = 0.032, p = 0.947).

Conclusion

Social support and self-efficacy were related to medication adherence in diabetic patients, and social support can improve medication adherence in patients with diabetes by affecting self-efficacy. Healthcare workers who interact with individuals with diabetes should take into account the factors mentioned above when designing health promotion interventions to address the needs of these individuals.

Determinants of Adherence to Treatment in Type 2 Diabetic Patients: A Directed Qualitative Content Analysis Based on Pender's Health Promotion Model

Adherence to the treatment of type 2 diabetes (T2D), which includes the use of prescribed drugs, following a healthy diet, and adopting a physically active lifestyle, is important to control the disease and improve the patients' quality of life. The present study aimed to explain the determinants of adherence to treatment in patients with T2D based on Pender's Health Promotion Model (HPM). The present research used a qualitative content analysis and was based on Pender's HPM. The data were collected through in-depth semi-structured interviews with 20 T2D patients using a purposive sampling in Bandar Abbas, southern Iran. Maximum variation was considered in terms of gender, age, history of diabetes, type of drug used, education, and occupation. The data collection continued until data saturation. At the same time, the collected data were analyzed using the directed content analysis. MAXQDA 10 was used to manage codes and facilitate data analysis. The data analysis led to the extraction of 10 categories and 19 subcategories as the determinants of adherence to the treatment of T2D patients. The participants shared their experiences about personal characteristics and their ecological environment, specific cognition and emotions, and the behavioral results and experience as the determinants of adherence to T2D treatment. The categories extracted from this study in the form of HPM constructs provided a framework to explain treatment adherence. This information can help policy makers and planners in designing future programs.

An exploration of status of chronic diseases and its influencing factors of older people in Chinese home care and long-term care facilities: a cross-sectional study

Background

As the population ages, the proportion of chronic diseases becomes more prevalent. This study aimed to investigate the current status of chronic diseases among the older people in home care (HC) and long-term care facilities (LTCFs) in China and to analyze its influencing factors.

Methods

This cross-sectional study was conducted between 2021 and 2022. A multi-stage stratified random sampling and census sampling approach was used in this survey of the health of 389 older people in HC and 202 older people in LTCFs from Western Hunan, respectively. The following instruments were included in the survey "International Resident Assessment Instrument for Home Care (interRAI-HC)" and the "International Resident Assessment Instrument for Long-Term Care Facilities (interRAI-LTCF)." Univariate analysis was used to examine the prevalence of chronic diseases among older people with different characteristics. Data were analyzed by IBM SPSS version 25.0 software. A p-value of <0.05 was considered statistically significant.

Results

The survey results showed that the prevalence of chronic diseases among older people in HC was 73.26% (95% CI, 68.85-77.68), and the top five chronic diseases were hypertension (26.36%), bone and joint disease (23.36%), gastrointestinal and gallbladder disease (11.78%), heart disease (11.21%), and diabetes (8.97%). The prevalence of chronic diseases among older people in LTCFs was 77.23% (95% CI, 77.23-83.06), and the top five chronic diseases were hypertension (33.11%), bone and joint disease (13.25%), cerebrovascular disease (12.91%), diabetes (11.26%), and heart disease (10.26%). The results showed that long time spent alone, having sleep disorders, and self-rated health status significantly increased HC in older people with the prevalence of chronic diseases (p < 0.05). Having marital status, non-healthy BMI, having sleep disorder, walking with the use of assistive devices, and self-rated health status significantly increased older people in LTCFs with the prevalence of chronic diseases (p < 0.05).

Conclusion

There are differences in the prevalence and distribution of chronic diseases among older people in two different aged care models in China, and there are various risk factors for chronic diseases. Therefore, chronic disease healthcare strategies should be tailored to two different aged care models for older people. Further summary found that older people in HC spend a lot of time alone and suffer from loneliness, which ultimately causes psychological disorders. Thus, psychological adaptation interventions are needed for older people in HC. Besides, older people in LTCFs lack social support from their families (divorced/widowed) and have activity disorders (walking with the use of assistive devices). Thus, social adaptation interventions are needed for older people in LTCFs. This study provides a theoretical basis for the distribution of healthcare and the prevention and treatment of chronic diseases in Chinese older people.

Covariates of a healthy diet and physical activity self-management one year after Bariatric surgery: A cross-sectional study

BACKGROUND

Healthy diet and physical activity self-management is important in maintaining weight loss and preventing weight regain after bariatric surgery. We aimed at evaluating covariates of healthy diet and physical activity self-management among patients undergone bariatric surgery using Health Action Process Approach (HAPA) model.

METHOD

In this cross-sectional study, 272 patients with a history of bariatric surgery were selected from the data registry of Tehran Obesity Treatment Study (TOTS). Data were collected using bariatric surgery self-management standard questionnaire (BSSQ), and items based on HAPA model for healthy diet and physical activity self-management. Data were analyzed using Path analysis and AMOS version 24.

RESULTS

The mean score of self-management was (32 ± 10SD). Coping planning construct (β = 0.22; p<0.001) and risk perception (β = 0.02; p<0.01) in dietary self-management and action planning (β = 0.16; p = 0.001) and risk perception (β = 0.001; p = 0.17) in physical activity self-management had the highest and lowest effect powers, respectively. Coping planning (β = 0.22; p<0.001) and action planning (β = 0.17; p<0.03) in diet, and action planning (β = 0.16; p = 0.010) in physical activity were significantly related to self-management. Also, task-coping self-efficacy (β = 0.28; and p<0.001), outcome expectancies (β = 0.37; p<0.001), risk perception (β = 0.13; p = 0.015) in diet and coping self-efficacy (β = 0.50; p<0.001), outcome expectancies (β = 0.12; p = 0.021) in physical activity were significantly related to behavioral intention. The values of CFI = 0.939 and RMSEA = 0.052 for diet and CFI = 0.948 and RMSEA = 0.048 for physical activity indicated adequate fit.

CONCLUSION

HAPA was applicable as a framework for interventions promoting healthy diet and physical activity self-management in patients who have undergone bariatric surgery.

Medications Non-adherence Reasoning Scale (MedNARS): Development and psychometric properties appraisal

Background

Proper elucidation of medication non-adherence reasoning especially in older adults might pave the way for an auspicious therapeutic outcome. The main aim of this study was to develop and psychometrically test the Medications Non-adherence Reasoning (MedNARS) questionnaire for application in research and probably practice settings.

Methods

A mixed methods design was utilized to develop the MedNARS. The item pool was mainly generated based on a qualitative query and literature review. The expert panel approved version of the MedNARS was psychometrically assessed on a convenience sample of 220 older patients with chronic disease. The internal consistency, test-retest reliability, content and face validity of the scale were appraised and its construct validity was assed using exploratory and confirmatory factor analyses.

Results

A nine-item version of the MedNARS was drafted based on the classical item analysis procedures and its estimated internal consistency measure of the Cronbach's alpha (0.85) and test-retest reliability (0.96) were in the vicinity of acceptable range. The exploratory factor analysis (EFA) output revealed a unidimensional structure for the MedNARS and the conducted confirmatory factor analysis (CFA) indicated an acceptable data fit for the extracted one-factor model. The goodness of fit indices were as the followings: χ2 /df=1.63(90% CI: 0.02 to 0.11), root mean squared error of approximation (RMSEA)=(0.07), comparative fit index (CFI)=0.95, Tucker-Lewis index (TLI)=0.93 and standardized root mean squared residual (SRMSR)=(0.05).

Conclusion

The study findings were indicative of MedNARS's applicability and feasibility for use in assessment of medication non-adherence reasoning among the elderly patients with chronic diseases. The MedNARS as a brief and elder-friendly instrument can be applied both in research and practice settings to enhance efficiency, safety, and health outcomes of the therapeutic recommendations.

Effects of Educational Interventions on Dietary Adherence among Type 2 Diabetics in Zahedan: Using the Health Action Process Approach

Background

Type 2 diabetes is the most common type of diabetes, and dietary adherence is a self-care practice. This research aims to improve dietary adherence among type 2 diabetics in Zahedan using the HAPA model.

Methods

In this cross-sectional study, a total of 210 type 2 diabetics admitted to hospital clinics in Zahedan during summer 2022 were selected. The intervention group (n = 105) and the control group (n = 105) were from hospitals in Zahedan. Samples were selected by the simple random sampling method among the diabetics. After data collection using the demographic characteristics questionnaire and the Dietary Adherence Questionnaire and the HAPA model constructs questionnaire, the pre-test analysis was performed. One and three months after the educational intervention, the questionnaires on HAPA model constructs and self-care behavior were filled out by the patients. Next, data were analyzed using independent t-test, chi-square test, and the Shapiro-Wilk test in SPSS 23.

Results

The results showed that all of the HAPA model constructs had significant differences, one and three months after the educational intervention (P = 0.001), indicating the effectiveness of education in the intervention group. However, there was no significant difference in the control group (P = 0.009).

Conclusion

After the intervention using the HAPA model, the model's constructs had a significant impact on the patients' self-care of dietary adherence following the training.

Socio-personal factors affecting adherence to treatment in patients with type 2 diabetes: A systematic review and meta-analysis

PURPOSE

The purpose of study was to identify the socio-personal factors affecting adherence to the treatment of patients with type 2 diabetes.

METHODS

Cross-sectional articles were extracted from databases such as Web of Science, PubMed, Elsevier. A meta-analysis was performed using integrated odds ratios (OR) and 95% confidence interval (CIs) for age, BMI, depression, educational level, gender, employment status, marital status, smoking status. STATA 12.0 was used to estimate pooled RR in definite subgroups. The quality of the studies included was evaluated using the STROBE checklist.

RESULTS

Thirty-one studies out of 7407 extracted articles were finally selected for the meta-analysis. The results showed that younger people had a 17% higher risk than older people, smokers had a 22% higher risk than non-smokers, and the employed had a 15% higher risk of non-adherence to treatment.

CONCLUSION

In conclusion, older age, smoking and employment can lead to non-adherence to T2D treatment. Interventions are suggested to be made besides common health care considering the socio-personal features on type 2 diabetes patients' treatment adherence.

Medication Adherence and Its Associated Factors among Patients with Type 2 Diabetes Mellitus Attending Primary Health Centers of Eastern Province, Saudi Arabia

Medication adherence by patients with diabetes is critical, as it plays a crucial role in individuals' long-term health and well-being. We evaluated the medication adherence, illness perception, diabetes knowledge, and associated factors among patients with type 2 diabetes mellitus (T2DM) attending primary health centers (PHCs) in the eastern province of the Kingdom of Saudi Arabia (KSA) using a validated Arabic version of a data collection form. In order to identify the variables that are associated with medication adherence, we applied a logistic regression analysis. Furthermore, we performed the Spearman test to find the correlation between medication adherence, illness perception, and diabetes knowledge. Of the 390 studied patients, 21.5% had low medication adherence, and it was significantly associated with gender (adjusted OR (AOR) = 1.89, 95% CI = 1.27-2.73, p = 0.003) and duration of diabetes (AOR = 0.83, 95% CI = 0.67-0.95, p = 0.017). Furthermore, we found a significant positive correlation between medication adherence and illness perception (rho = 0.217, p = 0.007) and knowledge of diabetes and medication adherence (rho = 0.425, p < 0.001). We recommend improving T2DM patients' knowledge about the importance of adherence to their medication regimen in several health education sessions at the PHCs. In addition, we recommend mixed-method medication adherence assessment surveys in different parts of the KSA.

Effectiveness of educational intervention in improving medication adherence among patients with diabetes in Klang Valley, Malaysia

Background

The diabetes patients’ adherence to prescription medication is 67.5%, which is lower than that of patients with any other medical conditions. Patients with low medication adherence are more likely to experience clinical complications, repeated hospitalizations, increased mortality, and increased healthcare costs, hence, education on disease and medication adherence is vital now. This study aimed to assess the level of medication adherence, medicine and information-seeking behaviour, and the effectiveness of online educational intervention in improving medication adherence and medicine and information-seeking behaviours among patients with diabetes in Klang Valley, Malaysia.

Methods

Individuals aged 12 years and above with a prior diagnosis of diabetes were identified and randomly divided into (control (n=183), and intervention groups (n = 206). Data about their medication adherence and information-seeking behaviour were obtained. As part of the online educational intervention, a month of daily general reminders to take their medications and educational materials about diabetes had provided to them via WhatsApp groups. After a month, the groups were reassessed, and the data were compared.

Results

The results showed that, at baseline, most of the respondents in the control (58.8% females and 53.08% males) and intervention (65.52% females and 85.12% males) groups had a low level of medication adherence. After a month of intervention, medication adherence was significantly improved in the intervention group (91.4% females and 71.28% males) compared to the control group (38.23% females and 44.44% males). At baseline, only 96 (52.45%) respondents in the control group and 110 (52.38%) in the intervention group preferred to read online educational materials to know more about their condition(s), it was improved after a month of intervention in the intervention group where 204 (99.02%) respondents prefer online materials, however no change in the control group response.

Conclusion

The study concludes that medication adherence and information-seeking behaviours among the study population have been significantly improved after a month of structured intervention. Medication adherence plays a crucial role in risk reduction strategies subsequently it improves the patient’s quality of life. Thus, well-planned more robust educational interventions on chronic diseases are warranted to improve the health outcomes of the patients.

The relationship between glucose intolerance status and risk of hospitalization during two decades of follow-up: Tehran lipid and glucose study

OBJECTIVE

To assess the relationship between glucose intolerance statuses at baseline defined as normal glucose tolerance (NGT), pre-diabetes, newly diagnosed (NDM) and known diabetes mellitus (KDM) and all-cause hospitalization among Iranian men and women during 20 years of follow-up.

RESEARCH DESIGN AND METHODS

This study included 8,014 individuals (3,836 men) ≥30 years from the cohort of Tehran Lipid and Glucose Study. Incidence rate ratios (IRRs) and (95% confidence interval (95% CI) for three groups of pre-diabetes, NDM and KDM was estimated using the Negative Binomial regression model, considering NGT group as reference group. Regression models were adjusted for age, body mass index, hypertension, chronic kidney disease, and cardiovascular disease (CVD).

RESULTS

Among men, compared with NGT group, those with pre-diabetes, NDM and KDM had higher incidence rate for hospitalization, with IRRs (95% CI) of 1.08 (0.96-1.20), 1.38 (1.20-1.57) and 1.96 (1.66-2.26), respectively, after adjusting for confounders. The corresponding values were 1.07 (0.96-1.17), 1.40 (1.21-1.59) and 2.07 (1.72-2.42) for women. Men with diabetes, generally had a higher rate of hospitalization for CVD rather than their female counterparts (IRRs: 1.46; 1.17-1.74). In patients with diabetes, the most common causes of hospitalization were macrovascular complications (i.e. coronary heart disease and stroke). Moreover, among the individuals with diabetes, those with poor glycaemic control (fasting plasma glucose (FPG) >10 mmol/l) had 39% higher rate of hospitalization than those with fair glycaemic control (FPG <10 mmol/l) (1.39; 1.12-1.65), adjusted for confounders.

CONCLUSION

Pre-diabetes, NDM, and KDM were associated with increased hospitalization rates during long-term follow-up. Interventions such as lifestyle modification or pharmacological therapies aiming to slow down the pre-diabetes and fair control of diabetes might potentially decrease the rate of hospitalization.Key messagesNDM and KDM status both increased rate of all-cause hospitalization.CVD and T2DM complication were the most common cause of hospitalization among patients with diabetes.Hospitalization due to recurrent CHD was significantly higher in men with diabetes than their female counterparts.

The relationship between personality profile and self-care among patients with type 2 diabetes

Background

As a chronic disease, diabetes needs special self-care behaviors until the end of life. Personality traits are considered to be effective psychological factors in controlling diabetes and self-care in patients with diabetes. The present study was conducted to determine the relationship between personality profile and self-care among people with type 2 diabetes.

Methods

In this descriptive-correlational study conducted in 2021, 160 patients with type 2 diabetes referred to the diabetes clinic of Imam Khomeini Educational and Medical Center in Ardabil were selected by convenience sampling method. The data collection tools included the Diabetes Self-Care Activities questionnaire (SDSCA) and the short form of the Millon Multi-Axis Clinical Test (MCMI-3), which were completed through interviews with patients. Data were analyzed by SPSS software using descriptive statistics (mean, SD, and frequency) and inferential statistics (Pearson correlation coefficient and linear regression).

Results

Based on the results, apart from the obsessive personality disorder, which had a positive relationship with self-care behaviors, a significant negative correlation was observed between schizoid, avoidant, depressed, dependent, antisocial, self-harming, borderline, and paranoid personality disorders with self-care behaviors (p < 0.01).

Conclusion

The results showed that there is a significant negative relationship between personality profile and self-care status of patients with type 2 diabetes. In other words, a person's personality profile can predict self-care behaviors. Accordingly, personality traits can be considered as one of the influencing factors on self-care in the educational programs of diabetic patients. Holding educational classes to empower patients using psychological interventions and teaching effective solutions can be an effective step toward increasing the level of mental-physical health and self-care of patients with type 2 diabetes.

Population-based pattern of medication use and prevalence of polypharmacy among patients with cardiovascular diseases: results of the Pars cohort study from Iran

Background

Polypharmacy in patients with cardiovascular diseases (CVDs) has been linked to several adverse outcomes. This study aimed to investigate the pattern of medication use and prevalence of polypharmacy among CVDs patients in Iran.

Method

We used the baseline data of the Pars cohort study (PCS). The participants were asked to bring their medication bags; then, the medications were classified using the Anatomical Therapeutic Chemical classification. Polypharmacy was defined as using five or more medications concurrently. Poisson regression modeling was applied. The adjusted prevalence ratios (PR) and its 95% confidence interval (CI) were estimated.

Results

Totally, 9262 participants were enrolled in the PCS, of whom 961 had CVDs. The prevalence of polypharmacy in participants with and without CVDs was 38.9% and 7.1%, respectively. The highest prevalence of polypharmacy (51.5%) was among obese patients. Abnormal waist-hip ratio (PR: 2.79; 95% CI 1.57–4.94), high socioeconomic status (PR: 1.65; 95% CI 1.07–2.54), tobacco-smoking (PR: 1.35; 95% CI 1.00–1.81), patients with more than three co-morbidities (PR: 1.41; 95% CI 1.30–1.53), high physical activity (PR: 0.66; 95% CI 0.45–0.95), use of opiate ever (PR: 0.46; 95% CI 0.26–0.82), and healthy overweight subjects (PR: 0.22; 95% CI 0.12–0.39) were associated with polypharmacy. Cardiovascular drugs (76.1%), drugs acting on blood and blood-forming organs (50.4%), and alimentary tract and metabolism drugs (33.9%) were the most frequently used drugs. Agents acting on the renin-angiotensin system were the mostly used cardiovascular system drugs among men and those above 60 years old, while beta-blocking agents were mostly prevalent among cardiovascular system drugs in women with CVDs.

Conclusion

Given the high prevalence of polypharmacy among CVDs patients, and subsequent complications, programs to educate both physicians and patients to prevent this issue is crucial.

The effectiveness of an intervention designed based on health action process approach on diet and medication adherence among patients with type 2 diabetes: a randomized controlled trial

BACKGROUND

Diabetes is a major cause of worldwide morbidity and mortality. Diet and medication non-adherence are common among individuals with diabetes, making glycemic control difficult to attain. This study aimed to evaluate an intervention designed based on Health Action Process Approach (HAPA) to improve adherence to diet and medication among patients with type 2 diabetes in Tehran, Iran.

METHODS

The study was a randomized controlled trial. A total of 248 patients with type 2 diabetes who had low diet and medication adherence were randomly allocated into two intervention (n  = 124) and control (n  = 124) groups. Intervention group received educational intervention during three months. HAPA constructs, diet and medication adherence, and Hemoglobin A1c (HbA1c) levels were assessed at baseline, one month and six months after the intervention. Mixed Model Analysis was used to compare between and within group changes in the outcomes.

RESULTS

There was a statistically significant improvement in HbA1c levels after six months (7.77 ± 1.36% vs. 8.07 ± 1.52%, 95% CI, p  < 0.001). Diet and medication adherence, intention, task self-efficacy, coping self-efficacy, recovery self-efficacy, action and coping planning, barriers, benefits and perceived social support were significantly improved one month and six months after the intervention (p  < 0.001).

CONCLUSION

Our intervention designed based on health action process approach led to improvements in diet and medication adherence, and HbA1c among the patients within one and six months.

TRIAL REGISTRATION

IRCT, IRCT20151208025431N4. Registered 10 March 2018, https://fa.irct.ir.