The relationship between the theory of planned behavior and medication adherence in patients with epilepsy

Effect of sexual health education on sexual function and satisfaction of menopausal migrant women: an application of the theory of planned behavior

OBJECTIVES

This study investigated the effect of an intervention based on the theory of planned behavior on sexual function and satisfaction of migrant women during menopause in Iran.

METHODS

This quasi-experimental study was conducted on 88 migrant and menopausal women in Iran. Sampling was performed using the multistage methods in four health care centers. The educational program based on the theory of planned behavior was held in 4 sessions of 90 min for 4 weeks in the intervention group. The final evaluation of the intervention was performed immediately, and the follow-up stage (3 months after the intervention) by completing questionnaires in two groups. The data was analyzed with SPSS 20 software with statistical tests of mean and standard deviation, Manwitney, Frideman, Generalized Estimating Equations.

RESULTS

The results showed that after the intervention, the mean score of sexual function in the intervention group increased from 16.53 ± 2.68 before to 17.52 ± 2.90 immediately and 17.38 ± 2.81 in follow up stage (p < 0.05). But in the control group, this score was not statistically significant during the study stages (p > 0.05).

CONCLUSION

The results indicate that the intervention based on the theory of planned behavior is effective in sexual function and satisfaction with the married life of migrant women during menopause. but to change the sexual function, studies with a longer duration and also the use of other educational models are suggested.

Can temporal self-regulation theory and its constructs predict medication adherence? A systematic review and meta-analysis

The relationships between temporal self-regulation theory (TST) constructs (intention, behavioural prepotency and self-regulatory capacity) and medication adherence should be established before further applying the theory to adherence. Searches of PsychINFO, Medline, EMBASE, CINAHL and Web of Science were conducted in 2019 (updated November 2021). Studies had to be original quantitative research, assessed the relationship between one of the constructs and adherence in one illness, and used an adult population. The risk of bias was assessed using the NHLBI Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies. Three meta-analyses were conducted using R. Moderation analyses were also conducted. A total of 57 articles (60 studies) with 13,995 participants were included, with 7 studies included in more than one analysis. Results identified significant correlations between intention (r = .369, [95% CI: .25, .48]), behavioural prepotency (r = .332, [95% CI: .18, .48]), self-regulatory capacity (r = .213, [95% CI: .10, .32]) and adherence. There was some evidence of publication bias and no significant moderators. No studies explored the interactions in the theory, so whilst the constructs adequately predict adherence, future research should apply the theory to adherence in a specific illness to assess these relationships. Pre-registered on Prospero: CRD42019141395.

The Intention of Inhaled Medication Adherence Scale (IMAS): The Development of a New Instrument for Assessing Inhaled Medication Adherence Among Patients with Chronic Obstructive Pulmonary Disease (COPD) Using Theory of Planned Behavior

Purpose

Inhaled medication adherence is an important issue for patients with chronic obstructive pulmonary disease (COPD) because adhering to inhaled medications could substantially improve their health. However, patients with COPD may not be always adhere to the prescribed inhaled medications. Therefore, understanding the underlying reasons for patients with COPD adhering to inhaled medications is important. The present study used Theory of Planned Behavior (TPB) as a theoretical framework to develop the Intention of Inhaled Medication Adherence Scale (IMAS) and assess its psychometric properties.

Patients and Methods

After reviewing papers using the TPB to design psychometric scales and the TPB scale development guidelines, 28 items were generated for expert evaluation. Eight experts reported that the 28 items all had good content validity (content validity index ranged from 0.88 to 1.00 at item-level; and from 0.981 to 0.987 at scale-level) comprising four factors. Following initial development, 235 patients with COPD (mean age 73.12 years; 93.6% males) completed the IMAS via interview with a respiratory therapist and a research assistant. The four-factor structure of the IMAS was evaluated using confirmatory factor analysis (CFA).

Results

Nine IMAS items were removed because of low factor loadings or offending estimates. The 19-item IMAS was confirmed as having a four-factor structure supported by the CFA results (comparative fit index=1.00; Tucker-Lewis index=1.00; root mean square error of approximation=0.00; standardized root mean square residual=0.06).

Conclusion

The 19-item IMAS had satisfactory psychometric properties in construct validity. The 19-item IMAS is an instrument that could help healthcare providers understand potential factors associated with adherence to inhaled medications among people with COPD.

Impact of ambulatory pharmacist on hospital visits in older adults with epilepsy: A case-control study

OBJECTIVE

Older adults have the highest prevalence of epilepsy of any age group. Care in this group is complex because of comorbidities, polypharmacy, and cognitive impairment. We aimed to assess the impact of an ambulatory pharmacist in decreasing hospital visits in this group.

METHODS

We performed a case-control study at a tertiary care center. The study group was seen in a multi-disciplinary older adult epilepsy clinic with the services of an ambulatory pharmacist to help with medication reconciliation, assessment, and adherence. The control clinic also cared for older adults with epilepsy but lacked a pharmacist. The occurrence and factors related to hospital visits were compared three months post-clinic visit. Demographic data were reported using descriptive statistics. A multinomial regression analysis was conducted to assess how well hospital visits could be predicted by pharmacist presence and other relevant variables.

RESULTS

Over 19 months, 58 and 74 patients were seen in the study and control groups, respectively. 26.6% and 18.4% of study and control group clinic visits were associated with a hospital visit, respectively (nonsignificant difference). The study group had significantly more patients with cognitive impairment (53.4% vs. 16.2%; p < 0.001), a higher burden of comorbidities as measured by Charlson comorbidity index (CCI) (mean 3.5 vs. 2.9; p = 0.02), and a greater number of patients with >1 seizure per month (17.2% vs. 6.8%) as compared to the control group. Hospital visits unrelated to epilepsy were associated with a higher CCI. Hospital visits related to epilepsy were associated with >1/month seizure frequency (>3 times risk).

CONCLUSIONS

This study demonstrates the multifactorial complexity of older adults with epilepsy. While the presence of a pharmacist resulted in similar hospital visits as the control group, the study group had a much more complex patient population. More studies are required to assess the best use of a pharmacist in older adults with epilepsy outpatient care.

Applying the theory of planned behavior to investigate type 2 diabetes patients' intention to receive injection therapy

Objectives

This study applied the theory of planned behavior (TPB) in shared decision making (SDM) to understand behavioral intention in patients with type 2 diabetes with regard to injection therapy for blood sugar control.

Methods

A cross sectional study was conducted. Two hundred and fifty-four patients with type 2 diabetes participated this study and were interviewed by pharmacists in different clinics. A patient decision aid (PDA) entitled "Should I receive injection therapy regarding my type 2 diabetes condition?" was developed for this study and served as interview agenda which comprised 18 items to inquire their willingness to use injection therapy and related considerations during the SDM process.

Results

The questionnaires were revised using item analysis, exploratory factor analysis, and a criteria of Cronbach's α > 0.7. This resulted in three constructs for all questionnaires that fit the TPB model. Attitude (β = 0.432; P < 0.001) and PBC (β = 0.258; P < 0.001) were directly correlated with intention. TPB explained 35.2% of the variance in intention toward the use of injection therapy.

Conclusions

Attitude and PBC toward injection therapy positively and significantly influence the patients' intention to use injection therapy.

Practical implications

These findings identify a key association for understanding behavioral intention in patients with type 2 diabetes with regard to blood sugar control during SDM.

Health Behavior Theory and Hypertension Management: Comparisons Among Black, White, and American Indian and Alaska Native Patients

In the United States, hypertension is more common among individuals from racial and ethnic minority groups. Hypertension control rates are also lower for minority group members compared with White Americans. However, little research has employed well-established theoretical perspectives on health behavior, such as the Theory of Planned Behavior (TPB) and the Model of Goal-Directed Behavior (MGB), to better understand racial differences in rates of hypertension control. The present study examines the psychological processes involved in efforts to control blood pressure, through the lens of the TPB augmented by the MGB, in hypertensive patients of three racial groups: American Indian/Alaska Native, Black/African American, and White. Participants completed measures of past efforts to control blood pressure, attitudes, norms, perceived behavioral control, intentions, and anticipated emotions. Analyses employed confirmatory factor analysis and cross-groups path analysis. Measurement of the theoretical constructs and core putative mediators of blood pressure control intentions were largely similar across racial groups. With regard to the patterns of relationships among the constructs, differences among the groups were most apparent in pathways from past efforts to both cognitive and affective theoretical antecedents of intentions. These findings contribute to the sparse literature on factors involved in racial differences in hypertension control rates and may inform future interventions aimed at increasing hypertension control behaviors. Trial Registration ClinicalTrials.gov, NCT03028597, registered 23 January 2017, https://clinicaltrials.gov/ct2/show/NCT03028597; ClinicalTrials.gov, NCT04414982, registered 4 June 2020 (retrospectively registered), https://www.clinicaltrials.gov/ct2/show/NCT04414982.

Adherence to Adjuvant Therapy in Patients with Resected Melanoma: An Application of the Theory of Planned Behavior

INTRODUCTION

Adherence to adjuvant therapy is crucial for effective disease management in patients with resected melanoma. This study assessed patient-reported adherence to adjuvant therapy and identified behavioral/belief constructs associated with adherence in patients with resected melanoma.

METHODS

Patients with resected stage III/IV melanoma were recruited through the Melanoma Research Foundation and a patient panel to complete an online survey. Patient characteristics, medical history, and adherence to therapy were captured. In accordance with the theory of planned behavior (TPB), the survey measured behavioral, normative, and control beliefs, and intention to adhere to therapy. Structural equation modeling (SEM) examined their relationships with adherence.

RESULTS

Among all patients who received adjuvant therapy and completed the survey (n = 184), 69% received intravenous and 31% received oral therapy; the majority (85.3%) were somewhat involved in deciding to start therapy. Mean age was 45 years, 44% of patients were female, and 83% had stage III/IV disease at diagnosis. Patients had a mean disease duration of 1.5 years, a time since complete resection of 10 months, and an adjuvant therapy duration of 8 months. Adherence to adjuvant therapy was high overall and higher with intravenous than with oral therapy (98.4% versus 91.2%, P = 0.002). All underlying TPB constructs were significant in the SEM model, which explained 60.3% of the variance in intention to adhere. Control beliefs had the strongest association with intention to adhere (standardized estimate = 0.47, P < 0.001) and intravenous therapy was associated with greater adherence than oral therapy (standardized estimate = 0.26, P < 0.001).

CONCLUSIONS

This study found that patients with resected melanoma are highly engaged in the decision to initiate systemic adjuvant therapy, with an overall high adherence rate to prescribed adjuvant treatment. Enhancing patients' view of their capability to adhere to treatments may further improve the adherence rate to melanoma adjuvant therapy.

Predictors of Medication Adherence of Patients With Coronary Heart Disease After Percutaneous Coronary Intervention: A Structural Equation Modeling Based on the Extended Theory of Planned Behavior

BACKGROUND

The theory of planned behavior (TPB), combined with social support, forms the extended TPB, which has shown to predict adherence to health-related behavior effectively, but few studies have applied it to explain medication adherence in patients with coronary heart disease (CHD) after percutaneous coronary intervention (PCI).

OBJECTIVES

The aim of this study was to explore the factors associated with medication adherence and the underlying mechanisms based on the extended TPB among patients with CHD after PCI.

METHODS

A cross-sectional descriptive study was conducted among patients with CHD after PCI in 2 major hospitals in Guangzhou, China. Medication adherence was measured with the Medication Adherence Report Scale. Constructs of the TPB contributing to medication adherence were assessed by the Theory of Planned Behavior Questionnaire for Medication Adherence. Social support was measured by the Multidimensional Scale of Perceived Social Support. Structural equation modeling was used to examine the hypotheses based on the extended TPB.

RESULTS

A total of 300 patients were surveyed and 26.0% of them were nonadherent. The structural equation modeling had good fit indices and estimated 62.6% of the variance in medication adherence. Regarding the relationships between the extended TPB constructs and medication adherence, "intention" was directly associated with medication adherence, and "perceived behavioral control" positively predicted medication adherence directly and indirectly. "Affective attitude" and "subjective norm" were indirectly associated with medication adherence through "intention." Social support exerted an indirect effect on medication adherence through "subjective norm."

CONCLUSIONS

The extended TPB is an appropriate model to predict medication adherence and provides an effective framework for adherence-enhancing interventions.

Examining Primary Care Physicians' Intention to Perform Cervical Cancer Screening Services Using a Theory of Planned Behavior: A Structural Equation Modeling Approach

Background

Promoting cervical cancer screening (CCS) is undoubtedly effective in combating severe public health problems in developing countries, but there are challenges to its implementation. Understanding the factors influencing primary care physicians' intentions to provide CCSs to rural women is crucial for the future implementation of screening programs. The aim of this study was to assess the intentions of primary care physicians to provide cervical cancer screening services (CCSSs) to rural women and their determinants.

Methods

This cross-sectional study included 1,308 primary care physicians in rural primary health care, and the data collection tool was developed based on the theory of planned behavior (TPB), which included demographic characteristics, the basic constructs of TPB, and the degree of knowledge of CCSSs as an extended variable of the TPB model. Structural equation modeling was used to analyze the relationships between each factor.

Results

Pathway analysis found that TPB is an appropriate theoretical basis for predicting primary care physicians' intent to provide CCSSs (χ2/df = 2.234 &lt; 3, RMSEA = 0.035, and SRMR = 0.034). Meanwhile, the structural equation model showed that attitude (β = 0.251, p &lt; 0.001), subjective norm (β = 0.311, p &lt; 0.001), perceived behavioral control (β = 0.162, p &lt; 0.001), and knowledge level (β = 0.152, p &lt; 0.01) positively predicted primary care physicians' intention to provide CCSSs.

Conclusions

TPB model, with the addition of knowledge, was useful in predicting primary care physicians' intention to provide CCSSs for rural Chinese women. The findings of this study provide a reference for the government and hospitals to develop strategies to improve the intent of primary care physicians to provide CCSSs.

The Impact of Good Governance on the People’s Satisfaction with Public Administrative Services in Vietnam

The State of Vietnam continues to show the cumbersome, limited effectiveness of the public sector and the widespread corruption of public servants. Yet, it has been endeavoring to renovate national governance in the direction of good governance to improve the quality of public services to meet the requirements of an increasingly high level of education and social life democratization. Since 2018, the Vietnamese government has been applying the Satisfaction Index of Public Administrative Services (SIPAS) to measure people’s satisfaction with administrative services. This fact has received full attention from scientists, and there have been many studies on this issue. Therefore, this study has explored the impact of good governance on people’s satisfaction with administrative services by employing some variables of the SIPAS scale, including five dependent variables, namely: accessibility; administrative procedures; civil servants’ ethics and capacity; the results of the procedure settlement; the reception and handling of comments, feedback, and recommendations; and an independent variable, namely the people’s satisfaction, to add more evidence to previous studies and enrich the research literature. This study has been conducted through a cross-sectional survey using an intentional sampling technique (n = 500). The multivariate linear regression analysis technique was applied to prove the hypotheses. According to the research findings, all independent variables have a positive and significant relationship with the dependent variable. They imply that good governance initially has positive and significant effects on the Vietnamese people’s satisfaction level.

Factors Affecting Payment Compliance of the Indonesia National Health Insurance Participants

Background

The study aims to explore factors that affect the compliance of Indonesia National Health Insurance (INHI) in paying the premiums.

Methods

The study design was qualitative with grounded theory research approach and constructivism paradigm. The study was conducted in 2018 and carried out for 3 months. We recruited 22 respondents from four different cities/districts. Triangulation was carried out through 26 informants from various stakeholders. Data were analyzed through coding, categorizing and pattern matching to obtain substantive theory.

Results

The resulting substantive theory consists of 6 constructs and 14 categories. Compliance with paying insurance premium depends on the intention to pay for contribution. Meanwhile, the intention to pay is related to internal and external factors of INHI participants. To improve payment contribution of independent participants, INHI program has to pay attention for factors originating internally from the participants themselves (understanding of INHI program, financial ability and self-attitude) and also externally such as operational system and the quality of health care.

Conclusion

Compliance of paying insurance premium is related to internal and external factors of participants. Thus, interventions to improve compliance to pay premium should take these factors into account, and not merely on increasing the knowledge of participants.

Integration of a smart multidose blister package for medication intake: A mixed method ethnographic informed study of older adults with chronic diseases

Smart adherence products are marketed to assist with medication management. However, little is known about their in-home integration by older adults. It is necessary to investigate the facilitators and barriers older adults face when integrating these products into their medication taking routines before effectiveness can be examined. The aim of this study was to (a) examine the integration of a smart multidose blister package and (b) understand medication intake behaviour of adults with chronic diseases using an integrated theoretical model comprised of the Technology Acceptance Model (TAM), Theory of Planned Behaviour (TPB) and Capacity, Opportunity, Motivation and Behaviour (COM-B) Model. An ethnographic-informed study was conducted with older adults using the smart multidose blister package to manage their medications for eight weeks. Data was collected quantitatively and qualitatively using in-home observations, photo-elicitation, field notes, semi-structured interviews, system usability scale (SUS) and net promoter scale (NPS). The interview guide was developed with constructs from the TAM, TPB and COM-B Model. Data were analyzed using the Qualitative Analysis Guide of Leuven (QUAGOL) framework to generate themes and sub-themes which were mapped back to TAM, TBP and COM-B Model. Ten older adults with an average age of 76 years, of which 80% were female, participated in the study. On average, participants reported five medical conditions, while the average number of medications was 11.1. The mean SUS was 75.50 and overall NPS score was 0. Qualitative analysis identified three themes; (1) factors influencing medication intake behaviour (2) facilitators to the product use and, (3) barriers to the product use. The smart blister package was found to be easy to use and acceptable by older adults. Clinicians should assess an older adult’s medication intake behavior as well as barriers and facilitators to product use prior to recommending an adherence product for managing medications.

Adherence to Growth Hormone Treatment Using a Connected Device in Latin America: Real-World Exploratory Descriptive Analysis Study

BACKGROUND

Recombinant human growth hormone (rhGH) therapy is an effective treatment for children with growth disorders. However, poor outcomes are often associated with suboptimal adherence to treatment.

OBJECTIVE

The easypod connected injection device records and transmits injection settings and dose data from patients receiving rhGH. In this study, we evaluated adherence to rhGH treatment, and associated growth outcomes, in Latin American patients.

METHODS

Adherence and growth data from patients aged 2-18 years from 12 Latin American countries were analyzed. Adherence data were available for 6207 patients with 2,449,879 injections, and growth data were available for 497 patients with 2232 measurements. Adherence was categorized, based on milligrams of rhGH injected versus milligrams of rhGH prescribed, as high (≥85%), intermediate (>56%-<85%), or low (≤56%). Transmission frequency was categorized as high (≥1 per 3 months) or low (<1 per 3 months). Chi-square tests were applied to study the effect of pubertal status at treatment start and sex on high adherence, and to test differences in frequency transmission between the three adherence levels. Multilevel linear regression techniques were applied to study the effect of adherence on observed change in height standard deviation score (∆HSDS).

RESULTS

Overall, 68% (4213/6207), 25% (n=1574), and 7% (n=420) of patients had high, intermediate, and low adherence, respectively. Pubertal status at treatment start and sex did not have a significant effect on high adherence. Significant differences were found in the proportion of patients with high transmission frequency between high (2018/3404, 59%), intermediate (608/1331, 46%), and low (123/351, 35%) adherence groups (P<.001). Adherence level had a significant effect on ∆HSDS (P=.006). Mean catch-up growth between 0-24 months was +0.65 SD overall (+0.52 SD in patients with low/intermediate monthly adherence and +0.69 SD in patients with high monthly adherence). This difference translated into 1.1 cm greater catch-up growth with high adherence.

CONCLUSIONS

The data extracted from the easypod Connect ecosystem showed high adherence to rhGH treatment in Latin American patients, with positive growth outcomes, indicating the importance of connected device solutions for rhGH treatment in patients with growth disorders.

Factors affecting Pakistani young adults' intentions to uptake COVID-19 vaccination: An extension of the theory of planned behavior

INTRODUCTION

Aside from personal beliefs, young adults' intention to uptake the COVID-19 vaccine can be influenced by their fear of COVID-19 and perceived infectability of COVID-19. The present study incorporated fear of COVID-19 and perceived infectability with the theory of planned behavior (TPB) to form an expanded TPB to analyze factors affecting Pakistani young adults' intentions to uptake the COVID-vaccine in Pakistan.

METHODS

A cross-sectional study was conducted and recruited participants from Pakistani social media users. The proposed extended TPB model was examined by using structural equation modeling.

RESULTS

A total of 1034 individuals replied to the survey. The three factors of the original theory of planned behavior and the fear of COVID-19 were positively related to their intention to uptake COVID-19 vaccination (r = 0.25-0.66). Moreover, the perceived infectability positively influenced the three theories of planned behavioral factors and the fear of COVID-19 (r = 0.27-0.60), also affecting the participants' intentions to uptake COVID-19 vaccination.

CONCLUSIONS

Perceived infectability was positively related to the participants' intentions to uptake COVID-19 vaccination, and perceived behavioral control was the strongest mediator. More evidence-based information concerning treatments and COVID-19 vaccination are needed to encourage individuals to uptake the vaccine.

The Effect of a Theory of Planned Behavior Education Program on Asthma Control and Medication Adherence: A Randomized Controlled Trial

BACKGROUND

Disease management in individuals with asthma is affected by factors such as avoiding triggers that cause attacks and properly using inhaler devices.

OBJECTIVE

To determine the effect of a theory of planned behavior (TPB) education program on asthma control and medication adherence.

METHODS

A randomized controlled trial enrolled 30 participants in the intervention group and 30 in the control group. The educational approach was employed in participants in the intervention group for five home visits over 3 months according to the TPB program.

RESULTS

Before the education program, all participants in the intervention group and 90% of those in the control group had poorly controlled asthma (P > .05). After the program, all individuals in the intervention group and 20% of the control group had well-controlled asthma (P < .001). There was no statistically significant difference between Morisky Medication Adherence Scale-8 pretest scores in the intervention and control groups in terms of medication adherence (2.37 ± 1.75 and 3.13 ± 1.71, respectively; P > .05). Mean Morisky Medication Adherence Scale-8 scores in the intervention group at posttest (7.50 ± 0.78) were significantly higher than those of the control group (3.93 ± 2.03; P < .001.

CONCLUSIONS

This study revealed that asthma control and medication adherence increased in the intervention group after the TPB education program. The program was effective in asthma control and medication adherence for individuals with asthma.

A Qualitative Application of Temporal Self-Regulation Theory to Understand Adherence to Simple and Complex Medication Regimens

Medication adherence is a global health concern, and variables of temporal self-regulation theory (TST) have been shown to be important in improving adherence. This qualitative study aims to explore how TST can help explain medication adherence in people’s daily lives, and whether there are differences in the adherence to simple and complex medication regimens. Twenty-nine participants from Australia engaged in semi-structured interviews based on TST (intention, behavioural prepotency, self-regulation), and other variables important to adherence. Interviews were analysed using thematic analysis. Six themes were identified (Routines, External Supports, Cost, Sense of Agency, Adverse Outcomes, and Weighing Up Pros and Cons), with partial support for TST (specifically intention, past behaviour, cues and planning). Four themes not related to TST were also identified. Individuals with more complex medication regimens spoke of the importance of routines, planning, and knowledge-seeking, whereas those with simpler regimens spoke of the importance of visual cues. TST may be useful for identifying some variables important in medication adherence, however, additional factors were also identified. For simple regimens, future research should focus on the manipulation of visual cues. For complex regimens, health professionals should consider supporting the use of medication management apps to assist in planning and ensuring a consistent routine.

Determinants of Maternal Behavior of Mobile Phone Use during Pregnancy

Excessive use of mobile phones might bring negative physical and psychological consequences to pregnant women. This study aims to explore the potential determinants of pregnant women's mobile phone use behavior to assist healthcare providers in the development of guideline programs. In order to explain the behavior, we developed a theoretical model based on the widely applied theory of planned behavior (TPB) by incorporating two additional constructs of personal habit and perceived risk. Structural equation modeling technique is employed to estimate the model based on questionnaire survey. Research results clearly show that behavior attitude and perceived behavior control play dominant roles in determining the intention and behavior. It is interesting to find that perceived risk and personal habit are less important in determining pregnant women's behavior of mobile phone use. Finally, suggestions are put forward to reduce the risk of mobile phone use during pregnancy.

Using an integrated social cognition model to predict COVID-19 preventive behaviours

Objectives

Rates of novel coronavirus disease 2019 (COVID‐19) infections have rapidly increased worldwide and reached pandemic proportions. A suite of preventive behaviours have been recommended to minimize risk of COVID‐19 infection in the general population. The present study utilized an integrated social cognition model to explain COVID‐19 preventive behaviours in a sample from the Iranian general population.

Design

The study adopted a three‐wave prospective correlational design.

Methods

Members of the general public (N = 1,718, M_age = 33.34, SD = 15.77, male = 796, female = 922) agreed to participate in the study. Participants completed self‐report measures of demographic characteristics, intention, attitude, subjective norm, perceived behavioural control, and action self‐efficacy at an initial data collection occasion. One week later, participants completed self‐report measures of maintenance self‐efficacy, action planning and coping planning, and, a further week later, measures of COVID‐19 preventive behaviours. Hypothesized relationships among social cognition constructs and COVID‐19 preventive behaviours according to the proposed integrated model were estimated using structural equation modelling.

Results

The proposed model fitted the data well according to multiple goodness‐of‐fit criteria. All proposed relationships among model constructs were statistically significant. The social cognition constructs with the largest effects on COVID‐19 preventive behaviours were coping planning (β = .575, p < .001) and action planning (β = .267, p < .001).

Conclusions

Current findings may inform the development of behavioural interventions in health care contexts by identifying intervention targets. In particular, findings suggest targeting change in coping planning and action planning may be most effective in promoting participation in COVID‐19 preventive behaviours.

Determinants of lifestyle counseling and current practices: A cross-sectional study among Dutch general practitioners

This study aimed to examine the amount of lifestyle counseling that Dutch general practitioners (GPs) generally provide to their patients, as well as the behavioral determinants of their lifestyle counseling practices. Lifestyle counseling was defined and operationalized through the 5As model (i.e. Assess, Advise, Agree, Assist and Arrange), while determinants were based on an adapted version of the theory of planned behavior. A cross-sectional study was conducted among a sample of 198 GPs, using an online survey questionnaire for collecting data. The results showed that 79.3% of the GPs assessed patients' current lifestyle often or always, while 60.1% reported they often or always assessed patients' motivation to improve their lifestyle. Depending on the lifestyle behavior, Advising to improve lifestyle ranged from 42.5% (sleep) to 92.4% (smoking), while Agree to set goals ranged from 21.7% (sleep) to 46.9% (smoking). Assisting patients to overcome barriers to lifestyle changes varied per patient barrier, ranging from lack of financial resources (25.7%) to stress (81.8%). The findings from the linear hierarchical regression revealed that GPs' self-efficacy (β = .46, p < .001), patient norm (β = .21, p < .001), and attitude (β = .20, p < .05) were the determinants with the strongest associations with lifestyle counseling. The full model explained 47% of the variance in counseling lifestyle. Implications for supporting GPs to counsel patients about their lifestyle are discussed.

The theory of planned behavior as a behavior change model for tobacco control strategies among adolescents in Botswana

Background

Behavioral intentions (motivational factors), attitudes, subjective norm (social pressures), and perceived behavioral control promote or discourage smoking behavior among adolescents.

Objective

To assess students’ behavioral intentions, attitudes, subjective norms and perceived behavioral control on smoking using the Theory of Planned Behavior. The prevalence of smoking among the adolescents is also calculated.

Methods

In this cross-sectional study, structured self-administered questionnaires were used to collect data from adolescents in primary and secondary schools. Data on demographics, behavioral intentions, attitudes, subjective norms, and perceived behavioral control towards smoking were collected. Pearson product moment correlations and logistic regression models were used to determine factors associated with current smoking.

Results

A total sample of 2554 (mean age = 15; Range = 12–18 years) students participated in the study. Twenty-nine percent (n = 728) of the students had tried smoking at least once. Smoking was predicted by attitudes, subjective norms, perceived behavioral control and intention.There was a strong association between having a parent or guardian, caregiver or close friend who smoked (p < 0.001) and being a smoker. The majority of students (57%) conveyed that adults talked to them about the harmful effects of cigarette smoking and 50% had discussed smoking concerns with their friends. Students who had positive attitudes towards smoking like “smoking makes you confident” were more likely to be current smokers (OR: 1.63, 95% CI: 1.03–2.59). The feeling or conviction that they could refuse a cigarette if offered was an impediment from smoking (OR: 0.18, 95% CI: 0.13–0.26).

Conclusions

Attitudes, subjective norms, and perceived behavioral control contributed significantly to the students' smoking. Right attitudes must be cultivated and behavioral control must be strengthened for early effective interventions to curtail smoking among adolescents.

Using extended theory of planned behavior to determine factors associated with help-seeking behavior of sexual problems in women with heart failure: a longitudinal study

Introduction: This study used extended theory of planned behavior (extended TPB) to understand the underlying factors related to help-seeking behavior for sexual problems among Iranian women with heart failure (HF).Methods: We recruited 758 women (mean age = 61.21 ± 8.92) with HF at three university-affiliated heart centers in Iran. Attitude, subjective norms, perceived behavioral control, behavioral intention, self-stigma of seeking help, perceived barriers, frequency of planning, help-seeking behavior, and sexual function were assessed at baseline. Sexual function was assessed again after 18 months. Structural equation modeling was used to explain change in sexual functioning after 18 months.Results: Attitude and perceived behavioral control were positively correlated to behavioral intention. Behavioral intention was negatively and self-stigma in seeking help was positively correlated to perceived barriers. Behavioral intention was positively and self-stigma in seeking help was negatively correlated to frequency of planning. Perceived behavioral control, behavior intention, and frequency of planning were positively and self-stigma in seeking help and perceived barriers were negatively correlated to help-seeking behavior. Help-seeking behavior was positive correlated to the change of FSFI latent score.Conclusions: The extended TPB could be used by healthcare professionals to design an appropriate program to treat sexual dysfunction in women with HF.

Measurement invariance across young adults from Hong Kong and Taiwan among three internet-related addiction scales: Bergen Social Media Addiction Scale (BSMAS), Smartphone Application-Based Addiction Scale (SABAS), and Internet Gaming Disorder Scale-Short Form (IGDS-SF9) (Study Part A)

Internet addiction has been found to be prevalent worldwide, including Asian countries, and related to several negative outcomes and other behavioral addictions. The Bergen Social Media Addiction Scale (BSMAS), Smartphone Application-Based Addiction Scale (SABAS), and nine-item Internet Gaming Disorder Scale-Short Form (IGDS-SF9) have been extensively used to assess internet-related addictions. However, the three aforementioned instruments have rarely been used in Asian countries. The aim of the present study was to investigate whether the BSMAS, SABAS, and IGDS-SF9 were appropriate for use in heterogeneous subsamples from Hong Kong and Taiwan. University students from Hong Kong (n = 306) and Taiwan (n = 336) were recruited via an online survey. Multigroup confirmatory factor analysis (MGCFA) was used to assess measurement invariance of the BSMAS, SABAS, and IGDS-SF9 across the two subcultures. The original unidimensional structures of BSMAS, SABAS and IGDS-SF9 were confirmed through confirmatory factorial analysis in both subcultures. The MGCFA results showed that the unidimensional structures of the BSMAS and IGDS-SF9 were invariant across the two Chinese cultural areas (Hong Kong and Taiwan). However, the measurement invariance of the SABAS was established after some model modifications. In conclusion, the present study found that the Chinese BSMAS, SABAS, and IGDS-SF9 were all adequate instruments to validly assess internet-related addictions among university students. The three brief instruments used for assessing addictions to social media, smartphone applications, and online gaming are valid and psychometrically robust across two Chinese subcultures and can be used by healthcare professionals in these regions.

Can a modified theory of planned behavior explain the effects of empowerment education for people with type 2 diabetes?

BACKGROUND

The effectiveness of the Patient Empowerment Program (PEP) has been demonstrated in people with diabetes mellitus (DM); however, the underlying reasons for its effectiveness remain unclear. To improve effectiveness, we need to study the psychological mechanism(s) of PEP to understand why it is effective. This study hypothesized that the Theory of Planned Behavior (TPB), modified specifically for people with DM, could describe the mechanism explaining PEP effects.

METHODS

A longitudinal design was used. Patients with type 2 DM (n = 365; 151 males; mean age = 62.9 ± 9.6 years) received two education sessions (i.e. seminars delivered by registered nurses to provide disease-specific knowledge), and some (n = 210) further enrolled afterwards in five empowerment sessions (i.e. small-group interactive workshops conducted by social workers to practice action planning, problem solving, and experience sharing). Validated questionnaires were used to measure risk perception, health literacy, attitude, subjective norm, perceived behavioral control and behavioral intention on diabetes self-care behaviors, and four diabetes self-care behaviors (diet control, exercise, blood glucose monitoring, and foot care) at baseline. Three months later (i.e. at the end of PEP), all participants completed the behavioral intention and diabetes self-care behaviors measures again. Attitude, subjective norm, perceived behavioral control, behavioral intention, and diabetes self-care behaviors were assessed to represent the TPB constructs. Risk perception and health literacy elements relevant to people with DM were assessed and added to modify the TPB.

RESULTS

The behavioral intention was associated with three diabetes self-care behaviors: exercise, blood glucose monitoring, and foot care. The behavioral intention was found to be a significant mediator in the following relationships: empowerment session participation and exercise (β = 0.045, p = 0.04), and empowerment session participation and foot care (β = 0.099, p < 0.001).

CONCLUSIONS

The effects of enrollment of empowerment sessions in PEP on exercise and foot care were likely to be mediated through behavioral intention.

Psychometric Properties of the Persian Food-Life Questionnaire Short Form among Obese Breast Cancer Survivors

OBJECTIVE

To assist weight control among women with breast cancer, improving their food attitudes may be an effective method. Therefore, the present study validated a short instrument assessing food attitudes (i.e., the Short Form of the Food-Life Questionnaire [FLQ-SF]) among Iranian women with breast cancer who are overweight.

METHODS

Women with breast cancer who were overweight (n = 493; mean ± standard deviation age = 52.3 ± 10.7 years) participated in the study. All of them completed the FLQ-SF, questions designed using the theory of planned behavior (TPB; including subjective norm, perceived behavioral control, and behavioral intention), and food frequency questionnaire (FFQ). Both classical test theory and Rasch models were used to examine the psychometric properties of the FLQ-SF. More specifically, the factorial structure of the FLQ-SF was assessed using confirmatory factor analysis (CFA), the item fit was examined using the Rasch model, and the concurrent validity was evaluated using the correlation between the FLQ-SF, TPB elements, and FFQ.

RESULTS

CFA results confirmed the Persian FLQ-SF has a five-factor structure. Rasch models indicated that all the FLQ-SF items fit in the construct of food attitudes. Significant correlations between FLQ-SF and other instruments (TPB elements and FFQ) supported the concurrent validity of the FLQ-SF.

CONCLUSIONS

The psychometric findings of the present study demonstrated that Persian FLQ-SF is a reliable and valid instrument. Therefore, the Persian FLQ-SF can be applied to assess food attitudes among Iranian women with breast cancer who are overweight.

Psychosocial Variables Related to Weight-Related Self-Stigma in Physical Activity among Young Adults across Weight Status

A healthy lifestyle with sufficient physical activity (PA) can contribute to weight management. Yet, many people do not maintain a healthy lifestyle. To explain PA, we propose a model that incorporates the Theory of Planned Behavior (TPB) with weight-related self-stigma. We recruited 325 young adults to complete questionnaires regarding their physical activities, weight-related self-stigma, and TPB factors. We used structural equation modeling to examine the model fit and the path invariance across weight groups. The model showed excellent model fit, but path invariance was not supported. Weight-related self-stigma significantly explained the perceived behavioral control, behavioral intention, and engagement of PA. People without overweight and people with overweight have different considerations for PA. Weight-related self-stigma is important for PA as well. To promote a healthy lifestyle, healthcare providers should provide different suggestions or interventions that suit their patients' weight-related concerns.

A cluster randomized controlled trial of a theory-based sleep hygiene intervention for adolescents

Study Objectives

To use theory to design and evaluate an intervention to promote sleep hygiene and health among adolescents.

Methods

The Theory of Planned Behavior (TPB) and the Health Action Process Approach (HAPA) were used to develop an intervention, which was then evaluated in a cluster randomized trial. Participants were high school students (N = 2,841, M age = 15.12, SD = 1.50). Adolescents in the intervention group received four face-to-face sessions providing behavior change techniques targeting the theoretical determinants of sleep hygiene. Adolescents in the control group only received educational material at the end of the study. The primary outcome was sleep hygiene measured at 1 and 6 months postintervention. A number of secondary outcomes were also measured, including beliefs about sleep, self-regulatory processes, and outcomes related to health and wellbeing.

Results

Sleep hygiene was improved in the intervention group when compared with the control group at both follow-up points (coefficients = 0.16 and 0.19, 95% CIs = 0.12-0.20 and 0.15-0.23 at 1 and 6 months, respectively, for scores on the Adolescent Sleep Hygiene Scale), as were psychosocial and general aspects of health. Mediation analyses suggested that beliefs about sleep hygiene as specified by the TPB, along with self-regulatory processes from HAPA, both mediated the effect of the intervention on outcomes. In turn, the effects of the intervention on sleep hygiene mediated its impact on general health.

Conclusions

Healthcare practitioners might consider intervention programs based on the TPB and the HAPA to improve sleep among adolescents.

Clinical Trial Registration

Clinicaltrials.gov (NCT02551913) https://clinicaltrials.gov/ct2/show/NCT02551913.

Development and psychometric evaluation of the Chinese version of the Participation and Environment Measure for Children and Youth

Purpose: To adapt the Participation and Environment Measure for Children and Youth for use with Chinese children and youths, and to investigate its psychometric properties.Materials and methods: The Participation and Environment Measure for Children and Youth was translated into Chinese using a cultural adaptation process. Parents of 69 children aged 5-12 years with disabilities and 319 children without disabilities completed the questionnaires. Internal consistency, test-retest reliability, factorial structure, and known-group validity were examined using Cronbach's alpha, intraclass correlation coefficient, confirmatory factor analysis and t-test, respectively.Results: We added and/or replaced activities with culturally-relevant activities in the Chinese version. Internal consistency was acceptable for most of the scales (0.55-0.86). Test-retest reliability of the summary scores was moderate to high (0.70-0.84). Data-model fit was confirmed in a one-factor structure for the participation scales and a two-factor structure for the environment scales. There were also significant differences in the summary scores between 65 gender- and age-matched pairs of children with and without disabilities on the school participation scales and all the environment scales.Conclusion: This study provides psychometric evidence supporting the use of the Participation and Environment Measure for Children and Youth to assess Chinese children's participation and environmental supports/barriers.Implications for rehabilitationThe Chinese version of the Participation and Environment Measure for Children and Youth was developed through a rigorous translation and cultural adaptation process.There is evidence for the reliability (internal consistency and test-retest reliability) and construct validity (factorial structure and known-group validity) of the Chinese version of the Participation and Environment Measure for Children and Youth.The Chinese version of the Participation and Environment Measure for Children and Youth can be used to assess children's participation in home, school and community settings and to identify environmental barriers that require further intervention.

Psychometric properties and measurement invariance of the Weight Self-Stigma Questionnaire and Weight Bias Internalization Scale in children and adolescents

Given the negative consequences of weight bias, including internalized weight stigma, on health outcomes, two instruments—the Weight Self-Stigma Questionnaire (WSSQ) and Weight Bias Internalization Scale (WBIS)—have been developed. However, their psychometric properties are yet to be tested for Asian pediatric populations. Method:Participants aged 8 to 12 years (N = 287; 153 boys) completed the WSSQ and the WBIS, and they were classified into either a group with overweight or a group without overweight based on self-reported weight and height. Results:Both WSSQ and WBIS had their factor structures supported by confirmatory factor analyses (CFAs). The measurement invariance of two-factor structure was further supported for WSSQ across gender and weight status. The measurement invariance of single-factor structure was supported for WBIS across gender but not across weight status. Conclusions:WSSQ and WBIS were both valid to assess the internalization of weight bias. However, the two instruments demonstrated different properties and should be applied in different situations.

Psychosocial factors influencing shared bicycle travel choices among Chinese: An application of theory planned behavior

The worldwide rise of shared bicycle use has changed the way people travel. Here we analyze shared bicycle use from the perspective of the theory of planned behavior, and propose a model to investigate factors influencing shared bicycle usage in China. A total of 211 shared bicycle users selected from 28 provinces throughout China completed a self-reported survey. Structural equation modelling (SEM) was used to delineate the pathway from shared bicycle usage. The SEM model demonstrated that: (1) shared bicycle use intention was significantly associated with four variables, namely travel attitude(β = 0.491, t = 24.569), social norms(β = 0.149, t = 6.771), travel habits(β = 0.146, t = 7.226) and perceived behavioral control (β = 0.190, t = 11.110); (2) shared bicycle use behavior was significantly affected by shared bicycle use intention(β = 0.406, t = 15.936), and also by travel habits(β = 0.320, t = 11.921); (3) shared bicycle use behavior was also affected by demographic variables (gender, age) and situational factors (distance). The conclusions of this study provide useful data for operators of bicycle services and government policy makers.

Mediating Effect Of The Motivation For Medication Use On Disease Management And Medication Adherence Among Community-Dwelling Patients With Schizophrenia

BACKGROUND

Nearly half of patients with schizophrenia do not adhere to the long-term medical treatment needed to manage their disease. Programs to promote medication adherence include promotion of motivation as a critical element to influence task performance.

PURPOSE

This study investigated the mediating effect of motivation for medication use on disease management and medication adherence in schizophrenia.

METHODS

This cross-sectional, descriptive correlational study enrolled a convenience sample of 373 community-dwelling patients with schizophrenia in the northern and central regions of Taiwan. Data were collected with questionnaires and a series of validated assessment tools. Hierarchical regression was used to analyze the mediating effect of motivation for medication use on disease management and medication adherence.

RESULTS

The medication adherence rate of the patients was 47.2%. The mediating effect of motivation for medication use on therapeutic alliance and medication adherence was 50%, whereas that on insight and medication adherence was 41% and that on medical social support and medication adherence was 72%.

CONCLUSION

Developing a medication motivation care model may be more effective than promoting therapeutic alliance, insight, or medical social support for promoting medication adherence. It also had greater impact on preventing relapses of community-dwelling patients with schizophrenia.

Sexual dysfunction and associated factors in Chinese Han women with epilepsy

PURPOSE

Women with epilepsy (WWE) are believed to be at risk of sexual dysfunction (SD) and face many sexual challenges because of multiple factors. This study aimed to assess the factors associated with SD in Chinese Han WWE.

METHODS

This cross-sectional study examined 112 married WWE in the Affiliated Hospital of Yangzhou University with focal (FE) or generalized epilepsy (GE) on antiepileptic drugs (AEDs), and 120 healthy controls without epilepsy, all of Chinese Han nationality. Data collection tools included the Chinese version of Female Sexual Function Index (FSFI), the Chinese version of Zung Self-Rating Anxiety Scale (SAS), the Chinese version of the Zung Self-Rating Depression Scale (SDS), the Chinese version of the revised Morisky Medication Adherence Scale (MMAS-8), and the Chinese version of the National Hospital Seizure Severity Scale (NHS3). Chi-square test, t-test, one-way analysis of variance (ANOVA), and binary logistic regression were used for statistical analysis.

RESULTS

A high rate (70.5%) of SD was detected in WWE, with 24.2% in controls. Sexual dysfunction affected all dimensions: desire (85.7%), arousal (56.3%), lubrication (47.3%), orgasm (66.1%), satisfaction (58.9%), and pain (41.1%). Elevated rates of anxiety (40.2%) and depression (33%) and poor medication adherence (31.3%) were also found in WWE. Binary logistic regression found that poor economic status (odds ratio (OR) = 13.904, 95% confidence interval (CI): 2.025-95.472, P = 0.007 and OR = 6.350, 95% CI: 1.323-30.477, P = 0.021), anxiety (OR = 1.222, 95% CI: 1.055-1.415, P = 0.007), and poor medication adherence (OR = 0.297, 95% CI: 0.124-0.707, P = 0.006) were associated with SD.

CONCLUSIONS

The associated factors of SD in Chinese Han WWE are multifactorial. The WWE have higher levels of anxiety, poor family economic status, and poor medication adherence. Medical professionals should not only better control seizures but also evaluate and improve patients' sexual function so as to improve the quality of life of WWE.

Using extended theory of planned behavior to understand aspirin adherence in pregnant women

OBJECTIVE

To use the Theory of Planned Behavior (TPB) combined with action and coping planning plus global relationship with husband to explain the aspirin adherence in a sample of women with high-risk pregnancy.

METHODS

A total of 535 Iranian women (mean age = 32.29 ± 4.98; year of marriage = 6.89 ± 3.61) completed the study. Each participant filled out several questionnaires on TPB (i.e., a widely applied theory describing how behaviors are influenced by beliefs, attitudes, perceived behavioral control and behavioral intentions), action planning, coping planning and relationship with husband at baseline. Eight weeks later, each participant completed the Five-item Medication Adherence Rating Scale (MARS-5) and underwent the blood test on aspirin serum level to provide the subjective and objective aspirin adherence information, respectively. Structural equation modeling (SEM) was applied to test three proposed models on aspirin adherence.

RESULTS

The TPB with planning plus relationship with husband was supported (comparative fit index = 0.969; Tucker-Lewis index = 0.950). Behavioral intention was the mediator in the associations of aspirin adherence and the following variables: attitude, perceived behavioral control, and relationship with husband. Action and coping planning mediated the associations of aspirin adherence and the two variables of behavioral intention and perceived behavioral control. Relationship with husband mediated the association of subjective norm and aspirin adherence.

CONCLUSIONS

The TPB model with (action and coping) planning plus relationship with husband serves a potential mechanism to explain the aspirin adherence for women with high risk of pregnancy. Possible implications are discussed based on our results.

Effects of religiosity and religious coping on medication adherence and quality of life among people with epilepsy

The epidemiologic information demonstrates the importance of caring people with epilepsy (PWE). Indeed, the impaired quality of life (QoL) and medication nonadherence rate among PWE have been reported. However, religiosity and religious coping could be potential factors for clinicians to foster appropriate intervention on epileptic care. This study investigated two models to further understand the relationships between religiosity, religious coping (including positive and negative coping), medication adherence, and QoL in an Iranian sample with epilepsy. Eligible PWE (n=760) completed the religiosity scale (Duke University Religion Index; DUREL) at baseline; the religious coping scale (Brief Religious Coping Scale; Brief RCOPE) one month later; the medication adherence scale (Medication Adherence Report Scale; MARS-5) two months later; and the QoL scale (Quality of Life in Epilepsy; QOLIE-31) twelve months later. Their antiepileptic drug serum level was measured during the period they completed the MARS. Through structural equation modeling (SEM), we found that religiosity directly correlated with negative religious coping and medication adherence, and indirectly correlated with medication adherence through negative religious coping. Both positive and negative religious coping directly correlated with medication adherence and QoL. Therefore, religiosity and religious coping may be determinants of medication adherence and QoL in PWE; health professionals may consider asking PWE if religion is important to them and how they use it to cope with their epilepsy.

Using the Theory of Planned Behavior incorporated with perceived barriers to explore sexual counseling services delivered by healthcare professionals in individuals suffering from epilepsy

People with epilepsy (PWE) are highly likely to suffer from sexual dysfunction, and dealing with this issue is a challenge for healthcare providers. Unfortunately, there is no theory-driven study that has investigated the counseling practice of healthcare providers for sexual problems in PWE. Therefore, we decided to apply the well-established Theory of Planned Behavior (TPB) to examine factors associated with healthcare providers' sexual counseling in PWE. Apart from TPB, perceived barriers toward providing counseling could be a possible factor that needs to be investigated as well. Therefore, two models explaining sexual counseling practice were proposed. Model 1 included only TPB and Model 2 included TPB incorporated with perceived barriers. Five hundred fifty-nine Iranian healthcare professionals responsible for PWE were recruited across several neurology clinics and asked to complete TPB-specific questionnaires. The same healthcare professionals were asked to complete an additional questionnaire on their attitudes toward sexual counseling 18months later. Structural equation modeling suggested Model 2 to be more useful in explaining sexual counseling practice compared with Model 1. Moreover, attitude and perceived behavioral control showed stronger associations with behavioral intention, whereas subjective norm showed weaker associations. The associations were similar across different healthcare professionals (i.e., medical doctors vs. nurses). In conclusion, TPB incorporated with perceived barriers might be a useful theory for different types of healthcare providers to improve and enhance sexual counseling practice.

A cluster randomised controlled trial of an intervention based on the Health Action Process Approach for increasing fruit and vegetable consumption in Iranian adolescents

OBJECTIVE

To evaluate an intervention programme based on the Health Action Process Approach and designed to increase the intake of fruit and vegetables (F&V) among Iranian adolescents aged 13 to 18.

DESIGN

A randomised controlled trial with three arms examined the short- (1 month) and long-term (6 months) effects of the intervention. There were two intervention groups (one included adolescents only [A group; n = 510]; the second included mothers and adolescents [M + A group; n = 462]) and a control group (n = 483). All participants were recruited from schools.

MAIN OUTCOME MEASURES

Social cognitions, self-regulatory processes and F&V intake.

RESULTS

The intervention led to an increase in F&V intake for adolescents in the short and long terms. Adolescents in the M + A group increased their F& V intake more than adolescents in the A group. Outcome expectancies, self-monitoring, intentions, action and coping planning, perceived social support and behavioural automaticity mediated the effect of the intervention on F&V intake.

CONCLUSION

The theory-based intervention led to an increase in F&V intake and promoted more positive social cognitions and self-regulatory processes among Iranian adolescents. The findings also provide evidence that involving mothers in an intervention can confer additional benefit.

Sleep hygiene behaviours in Iranian adolescents: an application of the Theory of Planned Behavior

Poor sleep quality and inadequate sleep in adolescents are a rising trend globally. The Theory of Planned Behaviour (TPB)-which centres on an individual's attitude toward performing the behaviour, subjective norms and perceived behavioural control-has been applied to examine sleep hygiene behaviours in young adults. We expanded on prior works by using a longitudinal design to examine the effects of TPB factors, together with sleep hygiene knowledge and planning constructs, on sleep hygiene behaviours and on sleep quality and health in a group of Iranian adolescents. A total of 1822 healthy adolescents (mean age = 13.97) from 25 high schools in Qazvin, Iran, completed a self-reported survey at baseline and 6 months later. Structural equation modelling (SEM) was used to delineate the pathway from adolescents' sleep hygiene knowledge, TPB constructs of their behavioural intentions and sleep hygiene behaviours and their sleep quality and self-reported health. The SEM model demonstrated that although behavioural intention, coping planning and action planning predicted the sleep hygiene behaviours positively 6 months later with acceptable model fit [comparative fit index (CFI) = 0.936; Tucker-Lewis index (TLI) = 0.902; root mean square error of approximation (RMSEA) = 0.080; standardized root mean square residual (SRMR) = 0.044], sleep hygiene knowledge did not predict behavioural intentions significantly. Sleep hygiene behaviours were associated with sleep quality and psychiatric wellbeing. Thus, the TPB, combined with coping and action planning, is useful in understanding the sleep hygiene behaviours of adolescents. Health-care providers may want to emphasize TPB constructs and coping and action planning to improve adolescents' sleep hygiene behaviours, rather than rely solely upon increasing adolescents' sleep hygiene knowledge.

Theory of Planned Behavior including self-stigma and perceived barriers explain help-seeking behavior for sexual problems in Iranian women suffering from epilepsy

PURPOSE

To apply the Theory of Planned Behavior (TPB) and the two additional concepts self-stigma and perceived barriers to the help-seeking behavior for sexual problems in women with epilepsy.

METHODS

In this 18-month follow-up study, TPB elements, including attitude, subjective norm, perceived behavioral control, and behavioral intention along with self-stigma and perceived barriers in seeking help for sexual problems were assessed in n=818 women with epilepsy (94.0% aged ≤40years). The basic TPB model (model 1) and the TPB model additionally including self-stigma and perceived barriers (Model 2) were analyzed using structural equation modeling (SEM).

RESULTS

Both SEM models showed satisfactory model fits. According to model, attitude, subjective norms, perceived behavioral control, and intention explained 63.1% of the variance in help-seeking behavior. Variance was slightly higher (64.5%) when including self-stigma and perceived barriers (model 2). In addition, the fit indices of the models were better highlighting the importance of self-stigma and perceived barriers in help-seeking behavior for sexual problems.

CONCLUSION

Theory of Planned Behavior is useful in explaining help-seeking behavior for sexual problems in women with epilepsy. Self-stigma and perceived barriers are additional factors that should be considered in future interventions aiming to adopt TPB to improve help-seeking behavior for sexual problems.

Female sexual function mediates the effects of medication adherence on quality of life in people with epilepsy

PURPOSE

The purpose of this study was to understand the mediating effects of female sexual functioning in the association between medication adherence and quality of life (QoL) in Iranian women with epilepsy (WWE).

METHODS

Women's sexual functioning was measured using Female Sexual Function Index; QoL using Quality of Life in Epilepsy; epilepsy severity using Liverpool Seizure Severity Scale; subjective medication adherence using Medication Adherence Report Scale; and objective medication adherence using serum level for antiepileptic drugs in 567 WWE. Medication adherence was measured at baseline, while women's sexual functioning, QoL, and epilepsy severity were measured at the 6-month follow-up. Structural equation modeling and regression models were conducted to examine the mediating role of women's sexual functioning.

RESULTS

The mediating effects of sexual functioning in the relationship between medication adherence (including subjective and objective measures) and QoL were supported in the total score of Female Sexual Function Index (coefficient=0.415, SE=0.117, p<0.001 for subjective medication adherence; coefficient=1.980, SE=0.446, p<0.001 for objective medication adherence). Seizure severity was significantly associated with QoL but only when objective medication adherence was measured (coefficient=-0.094, SE=0.036, p=0.009).

CONCLUSION

Our results extended the importance of medication adherence from symptom reduction to the beneficial effects of women's sexual functioning and QoL. Health care providers should be aware of these additional benefits of medication adherence and use these arguments to encourage female patients to take their medication, which can eventually increase their sexual satisfaction and overall QoL.