Adherence to maintenance-phase antidepressant medication as a function of patient beliefs about medication

Spontaneous mental associations with the words "side effect": Implications for informed and shared decision making

OBJECTIVE

To gain insight into patients' medical decisions by exploring the content of laypeople's spontaneous mental associations with the term "side effect."

METHODS

An online cross-sectional survey asked 144 women aged 40-74, "What are the first three things you think of when you hear the words 'side effect?"' Data were analyzed using content analysis, chi-square, and Fisher's exact tests.

RESULTS

17 codes emerged and were grouped into 4 themes and a Miscellaneous category: Health Problems (70.8% of participants), Decision-Relevant Evaluations (52.8%), Negative Affect (30.6%), Practical Considerations (18.1%) and Miscellaneous (9.7%). The 4 most frequently identified codes were: Risk (36.1%), Health Problems-Specific Symptoms (35.4%), Health Problems-General Terms (32.6%), and Negative Affect-Strong (19.4%). Code and theme frequencies were generally similar across demographic groups (ps>0.05).

CONCLUSION

The term "side effect" spontaneously elicited comments related to identifying health problems and expressing negative emotions. This might explain why the mere possibility of side effects triggers negative affect for people making medical decisions. Some respondents also mentioned decision-relevant evaluations and practical considerations in response to side effects.

PRACTICE IMPLICATIONS

Addressing commonly-held associations and acknowledging negative affects provoked by side effects are first steps healthcare providers can take towards improving informed and shared patient decision making.

[Efficiency of triple antihypertensive therapy in patients with uncontrolled hypertension and depressive disorders]

AIM

To evaluate the efficiency of triple antihypertensive therapy in patients with uncontrolled hypertension and depressive disorders (DD).

MATERIAL AND METHODS

153 patients with uncontrolled hypertension were examined, of whom 82 patients were diagnosed with mild and moderate DD. A combination of perindopril 10 mg/day, indapamide SR 1.5 mg/day, and amlodipine at an initial dose of 5 mg/day was given to patients with hypertension and DD. After 4 weeks of treatment, if target blood pressure (BP) levels could not be achieved, the dose of amlodipine was increased up to 10 mg/day. General clinical examination and 24-hour BP monitoring (BPM) were performed in all the patients at baseline and in the patients with DD also after 24 weeks of therapy. The traditional measures of the diurnal BP profile, as well as the parameters characterizing arterial stiffness and central aortic pressure (CAP) were estimated.

RESULTS

After 8 weeks of therapy, target BP levels were recorded in 63 (76.8%) patients. After 24 weeks of treatment, the hypertensive patients with DD showed significant positive changes in all the investigated 24-hour BPM parameters and normalization of the diurnal BP profile in 65.1% of cases. During the treatment, there were significant decreases in pulse wave velocity, brachial arterial and aortic augmentation indices, aortic systolic and diastolic pressures, and mean aortic BP and an increase in the velocity of the reflected wave.

CONCLUSION

Triple therapy, including perindopril, indapamide SR, and amlodipine, contributed to the achievement of target BP levels in the majority of hypertensive patients with DD, with significant positive changes in all 24-hour BPM parameters, optimization of the diurnal BP profile in most patients, clinically significant improvement of the parameters that characterize arterial stiffness and CAP.

Trends in patterns of antidepressant use in older general population between 2006 and 2012 following publication of practice guidelines

OBJECTIVE

The French regulatory agency published in 2006 practice guidelines related to the management of depressive and anxiety disorders. The main objective of the study was to assess their impact regarding use and monitoring of antidepressant drug treatment in older patients. The secondary objective was to identify factors associated with compliance with practice guidelines.

METHODS

A historical fixed cohort study with dynamic follow-up time was conducted in 16,144 subjects aged 65 years and over, initiating antidepressant treatment and registered in the National Health Insurance Database between 2006 and 2012. Compliance with guidelines was assessed from year to year using segmented regression analysis. Multiple logistic regressions were used to identify factors associated with compliance with guidelines.

RESULTS

Duration of antidepressant treatment was compliant with guidelines in 13.0% of patients aged 65-74 years and 18.5% of patients aged 75 years and over. Biological monitoring was performed in 12.6% of patients aged 65-74 years and 18.5% of patients aged 75 years and over. No significant change of rate of compliance with guidelines was observed over the study period. Compliance of prescriptions with guidelines was associated with patient's age, specialty of the prescriber, presence of chronic disease, year of treatment initiation, and presence of a university hospital in the area of residence.

CONCLUSION

While treatment duration and biological monitoring were often inadequate in older patients, the publication of guidelines by the French health regulatory authorities did not lead to any significant and sustained improvement in their patterns of antidepressant use. Copyright © 2016 John Wiley & Sons, Ltd.

Barriers and facilitators of adherence to antidepressants among outpatients with major depressive disorder: A qualitative study

BACKGROUND

One of the major challenges in treating major depressive disorder (MDD) is patients' non-adherence to medication. This study aimed to explore the barriers and facilitators of patients' adherence to antidepressants among outpatients with MDD.

METHODS

Semi-structured and individual in-depth interviews were conducted among patients with MDD who were taking antidepressants, in the psychiatric clinic of a government-run hospital in Malaysia. Participants were purposively sampled from different genders and ethnicities. Interviews were conducted using a validated topic guide, and responses were audio-recorded, transcribed verbatim, checked, and analyzed using the grounded theory approach.

RESULTS

A total of 30 patients were interviewed. Forty different themes and sub-themes were identified which were conceptually divided into two distinct categories related to barriers and facilitators to adherence. The barriers were: patient-specific, medication-specific, healthcare provision and system, social-cultural, and logistics. The facilitators were: having insight, perceived health benefits, regular activities, patient-provider relationship, reminders, and social support networks.

CONCLUSIONS

Patient-specific barriers and medication side effects were the major challenges for adhering to treatment. Perceived health benefits and having insight on the need for treatment were the most frequently cited facilitators. Targeted interventions should be developed to address the key barriers, and promote measures to facilitate adherence in this group of patients.

Educational and behavioural interventions for anticoagulant therapy in patients with atrial fibrillation

BACKGROUND

Current guidelines recommend oral anticoagulation therapy for patients with atrial fibrillation (AF) with one or more risk factors for stroke; however, anticoagulation control (time in therapeutic range (TTR)) with vitamin K antagonists (VKAs) is dependent on many factors. Educational and behavioural interventions may impact patients' ability to maintain their international normalised ratio (INR) control. This is an updated version of the original review first published in 2013.

OBJECTIVES

To evaluate the effects of educational and behavioural interventions for oral anticoagulation therapy (OAT) on TTR in patients with AF.

SEARCH METHODS

We updated searches from the previous review by searching the Cochrane Central Register of Controlled Trials (CENTRAL) and the Database of Abstracts of Reviews of Effects (DARE) in The Cochrane Library (January 2016, Issue 1), MEDLINE Ovid (1949 to February week 1 2016), EMBASE Classic + EMBASE Ovid (1980 to Week 7 2016), PsycINFO Ovid (1806 to Week 1 February 2016) and CINAHL Plus with Full Text EBSCO (1937 to 16/02/2016). We applied no language restrictions.

SELECTION CRITERIA

We included randomised controlled trials evaluating the effect of any educational and behavioural intervention compared with usual care, no intervention, or intervention in combination with other self-management techniques among adults with AF who were eligible for, or currently receiving, OAT.

DATA COLLECTION AND ANALYSIS

Two of the review authors independently selected studies and extracted data. Risk of bias was assessed using the Cochrane 'Risk of bias' tool. We included outcome data on TTR, decision conflict (patient's uncertainty in making health-related decisions), percentage of INRs in the therapeutic range, major bleeding, stroke and thromboembolic events, patient knowledge, patient satisfaction, quality of life (QoL), beliefs about medication, illness perceptions, and anxiety and depression. We pooled data for three outcomes - TTR, anxiety and depression, and decision conflict - and reported mean differences (MD). Where insufficient data were present to conduct a meta-analysis, we reported effect sizes and confidence intervals (CI) from the included studies. We evaluated the quality of evidence using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) framework.

MAIN RESULTS

Eleven trials with a total of 2246 AF patients (ranging from 14 to 712 by study) were included within the review. Studies included education, decision aids, and self-monitoring plus education interventions. The effect of self-monitoring plus education on TTR was uncertain compared with usual care (MD 6.31, 95% CI -5.63 to 18.25, I2 = 0%, 2 trials, 69 participants, very low-quality evidence). We found small but positive effects of education on anxiety (MD -0.62, 95% CI -1.21 to -0.04, I2 = 0%, 2 trials, 587 participants, low-quality evidence) and depression (MD -0.74, 95% CI -1.34 to -0.14, I2 = 0%, 2 trials, 587 participants, low-quality evidence) compared with usual care. The effect of decision aids on decision conflict favoured usual care (MD -0.1, 95% CI -0.17 to -0.02, I2 = 0%, 2 trials, 721 participants, low-quality evidence).

AUTHORS' CONCLUSIONS

This review demonstrates that there is insufficient evidence to draw definitive conclusions regarding the impact of educational or behavioural interventions on TTR in AF patients receiving OAT. Thus, more trials are needed to examine the impact of interventions on anticoagulation control in AF patients and the mechanisms by which they are successful. It is also important to explore the psychological implications for patients suffering from this long-term chronic condition.

Determinants of initiation, implementation, and discontinuation of amoxicillin by adults with acute cough in primary care

AIM

To investigate the determinants of adherence to amoxicillin in patients with acute lower respiratory tract infection.

MATERIALS AND METHODS

Three European data sets were used. Adherence data were collected using self-reported diaries. Candidate determinants included factors relating to patient, condition, therapy, health care system/provider, and the study in which the patient participated. Logistic and Cox regression models were used to investigate the determinants of initiation, implementation, and discontinuation of amoxicillin.

RESULTS

Although initiation differed across samples, implementation and discontinuation were similar. Determinants of initiation were days waited before consulting, duration of prescription, and being in a country where a doctor-issued sick certificate is required for being off work for <7 days. Implementation was higher for older participants or those with abnormal auscultation. Implementation was lower for those prescribed longer courses of amoxicillin (≥8 days). Time from initiation to discontinuation was longer for longer prescriptions and shorter for those from countries where single-handed practices were widespread.

CONCLUSION

Nonadherence to amoxicillin was largely driven by noninitiation. Differing sets of determinants were found for initiation, implementation, and discontinuation. There is a need to further understand the reasons for these determinants, the impact of poor adherence to antibiotics on outcomes, and to develop interventions to improve antibiotic use when prescribed.

The use of randomisation-based efficacy estimators in non-inferiority trials

BACKGROUND

In a non-inferiority (NI) trial, analysis based on the intention-to-treat (ITT) principle is anti-conservative, so current guidelines recommend analysing on a per-protocol (PP) population in addition. However, PP analysis relies on the often implausible assumption of no confounders. Randomisation-based efficacy estimators (RBEEs) allow for treatment non-adherence while maintaining a comparison of randomised groups. Fischer et al. have developed an approach for estimating RBEEs in randomised trials with two active treatments, a common feature of NI trials. The aim of this paper was to demonstrate the use of RBEEs in NI trials using this approach, and to appraise the feasibility of these estimators as the primary analysis in NI trials.

METHODS

Two NI trials were used. One comparing two different dosing regimens for the maintenance of remission in people with ulcerative colitis (CODA), and the other comparing an orally administered treatment to an intravenously administered treatment in preventing skeletal-related events in patients with bone metastases from breast cancer (ZICE). Variables that predicted adherence in each of the trial arms, and were also independent of outcome, were sought in each of the studies. Structural mean models (SMMs) were fitted that conditioned on these variables, and the point estimates and confidence intervals compared to that found in the corresponding ITT and PP analyses.

RESULTS

In the CODA study, no variables were found that differentially predicted treatment adherence while remaining independent of outcome. The SMM, using standard methodology, moved the point estimate closer to 0 (no difference between arms) compared to the ITT and PP analyses, but the confidence interval was still within the NI margin, indicating that the conclusions drawn would remain the same. In the ZICE study, cognitive functioning as measured by the corresponding domain of the QLQ-C30, and use of chemotherapy at baseline were both differentially associated with adherence while remaining independent of outcome. However, while the SMM again moved the point estimate closer to 0, the confidence interval was wide, overlapping with any NI margin that could be justified.

CONCLUSION

Deriving RBEEs in NI trials with two active treatments can provide a randomisation-respecting estimate of treatment efficacy that accounts for treatment adherence, is straightforward to implement, but requires thorough planning during the design stage of the study to ensure that strong baseline predictors of treatment are captured. Extension of the approach to handle nonlinear outcome variables is also required.

TRIAL REGISTRATION

The CODA study: ClinicalTrials.gov, identifier: NCT00708656 . Registered on 8 April 2008. The ZICE study trial: ClinicalTrials.gov, identifier: NCT00326820 . Registered on 16 May 2006.

Exploratory analysis of the French version of the beliefs about medicines questionnaire in patients with severe mental disorders: Factorial structure and reliability in specific populations of schizophrenic, bipolar and depressive patients

OBJECTIVES

The aims of our study were to explore the factor structure and psychometric properties of the French version of the Beliefs about Medicines Questionnaire (BMQ) in patients with severe mental illness and in specific populations of patients with schizophrenia, bipolar disorder and major depressive disorder.

METHODS

A cross-sectional study including patients with schizophrenia, bipolar disorder and major depressive disorder was conducted (n = 150). Principal component analysis (PCA), reliability and validity of the French version of the BMQ were performed.

RESULTS

PCA revealed a two-factor structure similar to the original structure for the BMQ-Specific scale but only a one-component solution for the BMQ-General scale in both the total sample and the three subgroups. These subscales have satisfactory internal consistency. Validity was supported by the significant correlations of all BMQ subscales with the Drug Attitude Inventory.

CONCLUSION

The French version of the BMQ appears as a three-dimensional scale and presents satisfactory psychometric properties for use in patients with severe mental illness as well as specific populations of patients with schizophrenia, bipolar disorder and major depressive disorder.

Attitudes toward antipsychotic medications as a useful feature in exploring medication non-adherence in schizophrenia

OBJECTIVE

To investigate the interest in the attitudes toward antipsychotic medication in exploring medication non-adherence.

METHODS

Schizophrenic patients (N=120) completed the Beliefs about Medicines Questionnaire and measures of medication adherence, and clinical outcomes. Comparison between four attitudinal groups and logistic regressions were performed.

RESULTS

High level of adherence varied significantly between attitudinal groups (Accepting, 70%; Indifferent, 63%; Ambivalent, 50%; Sceptical, 14%; p<0.001). Poor insight and psychic side effects were the most significant predictors of negative beliefs.

CONCLUSION

The attitudinal groups approach could facilitate the identification of patients with non-adherence and determine individual targets of interventions to improve negative beliefs.

Associations Between Personality Traits and Adherence to Antidepressants Assessed Through Self-Report, Electronic Monitoring, and Pharmacy Dispensing Data: A Pilot Study

Treatment with antidepressants is often compromised by substantial nonadherence. To understand nonadherence, specific medication-related behaviors and beliefs have been studied, but less is known about broader and temporally stable personality "traits." Furthermore, adherence has often been assessed by a single method. Hence, we investigated associations between the Big Five personality traits and adherence assessed by self-report, electronic drug use monitoring, and dispensing data. Using the Big Five Inventory, we assessed the personality traits "openness," "conscientiousness," "extraversion," "agreeableness," and "neuroticism" of patients treated with antidepressants who were invited through community pharmacies. Self-reported adherence was assessed with the Medication Adherence Rating Scale (score >24), electronic monitoring with medication event monitoring system (MEMS) devices (therapy days missed ≤ 10% and < 4 consecutive days missed), and dispensing data (medication possession ratio ≥ 80%). One hundred four women and 33 men participated (mean age, 51; standard deviation, 14). Paroxetine was most frequently prescribed (N = 53, 38%). Logistic regression analysis revealed that of the personality traits, the third and fourth quartiles of "conscientiousness" were associated with better self-reported adherence (odds ratio, 3.63; 95% confidence interval, 1.34-9.86 and odds ratio, 2.97; 95% confidence interval, 1.09-8.08; P ≤ 0.05). No relationships were found between personality traits and adherence assessed through electronic drug use monitoring or dispensing data. We therefore conclude that adherence to antidepressant therapy seems to be largely unrelated to personality traits.

A Multifaceted Nurse- and Web-Based Intervention for Improving Adherence to Treatment in Patients With Cardiovascular Disease: Rationale and Design of the MIRROR Trial

Background

Poor adherence to medication is one of the limitations in the treatment of cardiovascular diseases, thereby increasing the risk of premature death, hospital admissions, and related costs. There is a need for simple and easy-to-implement interventions that are based on patients’ perspectives, beliefs, and perceptions of their illness and medication.

Objective

The objective is to test the effectivity of this intervention to improve medication adherence in patients with established cardiovascular disease, that is, in secondary prevention.

Methods

In this study the effect of a personalized visualization of cardiovascular risk levels through a website aiming at supporting self management in combination with a group consultation and communication intervention by a nurse on adherence to treatment in 600 patients with manifest cardiovascular diseases will be assessed. The health belief model was chosen as main theoretical model for the intervention.

Results

Primary outcome is adherence to treatment calculated by refill data. Secondary outcomes include the Beliefs about Medication Questionnaire and the Modified Morisky Scale. Patients are followed for one year. Results are expected by 2015.

Conclusions

This study assesses adherence to treatment in a high-risk cardiovascular population by applying an intervention that addresses patients’ capacity and practical barriers as well as patients’ beliefs and perceptions of their illness and medication.

ClinicalTrial

ClinicalTrials.gov NCT01449695; https://clinicaltrials.gov/ct2/show/NCT01449695 (Archived by WebCite at http://www.webcitation.org/6kCzkIKH3)

ANTIDEPRESSANT ADHERENCE ACROSS DIVERSE POPULATIONS AND HEALTHCARE SETTINGS

BACKGROUND

Early adherence is key to successful depression treatment, but nearly 60% of patients discontinue antidepressants within 3 months. Our study aimed to determine factors associated with poor early adherence to antidepressants in a large diverse sample of patients.

METHODS

Six Mental Health Research Network healthcare systems contributed data for adults with depression and a new antidepressant start, defined by a washout period of at least 270 days, between January 1, 2010 and December 31, 2012. Pharmacy fill and self-reported race/ethnicity data were obtained from the electronic medical record. Patients had early adherence if they had a second antidepressant fill within 180 days of the first. We used logistic regression to investigate the relationship between early adherence and patient characteristics.

RESULTS

A total of 177,469 adult patients had 184,967 new episodes of depression with a filled antidepressant prescription. Patients refilled their antidepressants within 180 days in 71% of episodes. Race/ethnicity was a strong predictor of early adherence, with patients from racial/ethnic minorities other than Native Americans/Alaskan Natives less likely (adjusted odd ratios 0.50-0.59) to refill their antidepressants than non-Hispanic whites. Age, neighborhood education, comorbidity burden, provider type and engagement in psychotherapy were also associated with adherence. Other apparent predictors of early adherence, including neighborhood income, gender, and prior mental health hospitalizations, were no longer significant in the fully adjusted model.

CONCLUSIONS

Race/ethnicity was a robust predictor of early antidepressant adherence, with minority groups other than Native Americans/Alaskan Natives less likely to be adherent. Further research is needed to determine whether early nonadherence in specific minority populations is intentional, due to side effects or patient preference, or unintentional and appropriate for targeted interventions to improve adherence.

Side Effect Perceptions and Their Impact on Treatment Decisions in Women

BACKGROUND

Side effects prompt some patients to forego otherwise-beneficial therapies. This study explored which characteristics make side effects particularly aversive.

METHODS

We used a psychometric approach, originating from research on risk perception, to identify the factors (or components) underlying side effect perceptions. Women ( N = 149) aged 40 to 74 years were recruited from a patient registry to complete an online experiment. Participants were presented with hypothetical scenarios in which an effective and necessary medication conferred a small risk of a single side effect (e.g., nausea, dizziness). They rated a broad range of side effects on several characteristics (e.g., embarrassing, treatable). In addition, we collected 4 measures of aversiveness for each side effect: choosing to take the medication, willingness to pay to avoid the side effect (WTP), negative affective attitude associated with the side effect, and how each side effect ranks among others in terms of undesirability. A principal components analysis (PCA) was used to identify the components underlying side effect perceptions. Then, for each aversiveness measure separately, regression analyses were used to determine which components predicted differences in aversiveness among the side effects.

RESULTS

The PCA revealed 4 components underlying side effect perceptions: affective challenge (e.g., frightening), social challenge (e.g., disfiguring), physical challenge (e.g., painful), and familiarity (e.g., common). Side effects perceived as affectively and physically challenging elicited the highest levels of aversiveness across all 4 measures.

CONCLUSIONS

Understanding what side effect characteristics are most aversive may inform interventions to improve medical decisions and facilitate the translation of novel biomedical therapies into clinical practice.

The necessity-concerns framework predicts adherence to medication in multiple illness conditions: A meta-analysis

OBJECTIVE

This meta-analysis investigated whether beliefs in the necessity and concerns of medicine and the necessity-concerns differential are correlated with medication adherence on a population level and in different conditions.

METHODS

An electronic search of Web of Science, EMBASE, PubMed and CINAHL was conducted for manuscripts utilising the Beliefs about Medicines Questionnaire and comparing it to any measure of medication adherence. Studies were pooled using the random-effects model to produce a mean overall effect size correlation. Studies were stratified for condition, adherence measure, power and study design.

RESULTS

Ninety-four papers were included in the meta-analysis. The overall effect size(r) for necessity, concerns, and necessity-concerns differential was 0.17, -0.18 and 0.24 respectively and these were all significant (p<0.0001). Effect size for necessity was stronger in asthma and weaker in the cardiovascular group compared to the overall effect size.

CONCLUSION

Necessity and concerns beliefs and the necessity-concerns differential were correlated with medication adherence on a population level and across the majority of included conditions. The effect sizes were mostly small with a magnitude comparable to other predictors of adherence.

PRACTICE IMPLICATIONS

This meta-analysis suggests that necessity and concern beliefs about medicines are one important factor to consider when understanding reasons for non-adherence.

The self-efficacy model of medication adherence in chronic mental illness

AIM

In this position paper, the self-efficacy model of medication adherence in chronic mental illness is presented, and its application to antipsychotic medication adherence is considered.

BACKGROUND

Poor adherence to antipsychotic medications is common in chronic mental illness. Major implications of this are relapse and re-hospitalisation. Several conceptual frameworks have been developed about adherence and, in some instances, have been incorporated in medication taking studies, but have resulted in inconsistent outcomes.

METHOD

This paper draws on a review of literature from databases to inform the development of the self-efficacy model of medication adherence. Inclusion and exclusion criteria were developed from primary and secondary research questions.

RESULTS

The model places the person with chronic mental illness as an active participant central to the process of medication taking. It has three components: core factors, contextual influences and a continuum. The factors comprise a central factor, self-efficacy and four interrelated supporting influences: perceived medication efficacy; access to, and relationships with, health professionals; significant other support and supported living circumstances. The factors are affected by three broad contextual influences - personal issues, medication side-effects and complexity, and social stigma - which affect the way individuals take their medications. A continuum exists between adherence and non-adherence.

CONCLUSION

The model positions service users at the heart of adherence by giving prominence to self-efficacy, medication efficacy and to immediate social, psychological and environmental supports. Further work is needed to validate, refine and extend the model.

RELEVANCE TO CLINICAL PRACTICE

For practitioners involved in prescribing and medication management in people with chronic mental illness, the model provides a theoretical framework to strengthen adherence. It highlights the need to consider broader influences on medication taking. Moreover, it places the person with chronic mental illness as an active participant at the centre of strategies to enhance adherence.

Improving the assessment of depression remission with the Remission Evaluation and Mood Inventory Tool

OBJECTIVE

The Remission Evaluation and Mood Inventory Tool (REMIT) is a practical 5-item self-report measure of key positive mood states associated with recovering from depression, as distinct from depressive symptoms per se. The study goal was to identify a clinically useful threshold for interpreting REMIT responses in the context of mild to moderate depressive symptoms.

METHODS

This was a secondary analysis of a cross-sectional dataset initially used to develop and validate the REMIT. Primary care patients being treated for depressive symptoms of either mild or moderate severity (n = 247 and 240, respectively) rated their perceived degree of depression remission prior to completing the Patient Health Questionnaire-8 (PHQ-8) and the REMIT. We summed the totals of the latter two measures to form the PHQ + REMIT index.

RESULTS

Receiver Operating Characteristics analysis indicated that the PHQ + REMIT threshold ≥ 13 was associated with good sensitivity (92%) and acceptable specificity (43%) to the absence of patient-perceived remission. In contrast, the PHQ had only 21% specificity at this sensitivity level. Area under the curve was 0.815 (95% C.I.: 0.765-0.865), which was significantly greater than that of the PHQ-8 alone (area under the curve = 0.745, 95% C.I.: 0.691-0.805, p(diff) = 0.0002). Threshold performance was unaffected by adjustment for demographic characteristics and variation in remission percentage. Compared with standard symptom-based classification, using the REMIT reclassified 27% of mildly symptomatic patients as remitted.

CONCLUSIONS

Using the REMIT with patients who have mild to moderate depressive symptoms improves the assessment of patient-perceived remission, which is indicated by a summed PHQ + REMIT index of less than 13. Longitudinal research is needed to test whether this broadened patient-centered approach to assessing remission improves clinical decision making and long-term outcomes.

Developing a Complex Educational-Behavioural Intervention: The TREAT Intervention for Patients with Atrial Fibrillation

This article describes the theoretical and pragmatic development of a patient-centred intervention for patients with atrial fibrillation (AF). Theoretical models (Common Sense Model, Necessity-Concerns Framework), clinical frameworks, and AF patient feedback contributed to the design of a one-off hour-long behaviour-change intervention package. Intervention materials consisted of a DVD, educational booklet, diary and worksheet, which were patient-centred and easy to administer. The intervention was evaluated within a randomised controlled trial. Several “active theoretical ingredients” were identified (for e.g., where patients believed their medication was less harmful they spent more time within the therapeutic range (TTR), with general harm scores predicting TTR at 6 months). Allowing for social comparison and adopting behaviour change techniques enabled accurate patient understanding of their condition and medication. The process of developing the intervention using theory-derived content and evaluation tools allowed a greater understanding of the mechanisms by which this intervention was successful. Alleviating concerns about treatment medication by educating patients can help to improve adherence. This process of intervention development could be adopted for a range of chronic illnesses and treatments. Critical elements should include the use of: (1) clinical guidelines; (2) appropriate theoretical models; (3) patient input; and (4) appropriate evaluation tools.

Physician perception regarding side-effect profile at the onset of antidepressant treatment: a survey of Israeli psychiatrists and primary care physicians

BACKGROUND

One of the major factors affecting treatment compliance and outcome in patients is the wide range of side effects (SEs) associated with antidepressants. In the present study, we aimed to assess the extent to which Israeli primary care (PC) physicians and psychiatrists discuss the SEs of selective serotonin reuptake inhibitors (SSRIs) with patients prior to the onset of treatment.

METHODS

A cross-sectional questionnaire survey was conducted among PC physicians (N = 123) and psychiatrists (N = 105). Questionnaires were distributed using a mixed-modality design, combining a web survey and in-person delivery of questionnaires.

RESULTS

A significant percentage of our respondents reported that they rarely discuss psychological (60 %) or severe (29 %) SEs of SSRIs. Nearly half (41 %) admitted to avoiding discussion of impact on suicidal ideation. Specialists were noted to discuss and evaluate SEs significantly more than residents, and Psychiatrists more than PC physicians. Specifically, psychiatrists more often discussed the possibility of sexual dysfunction (t (225) = 2.23; p < 0.05) and suicidal ideation (t (225) = 2.11; p < 0.05).

CONCLUSIONS

It seems that PC physicians and psychiatrists surveyed in this study do not share sufficient information regarding the SEs of SSRIs with their patients at the onset of treatment. In improving this practice, the integration of proper SE management into educational interventions has potential in enhancing compliance and improving expertise and level of care.

Self-reported medication adherence and beliefs among elderly in multi-treatment: a cross-sectional study

AIM

To evaluate the association between adherence to treatment and beliefs about medications in multi-treated elderly patients.

BACKGROUND

A large body of evidence documented the importance of adherence to therapy in predicting clinical outcomes, and the association between adherence and medication beliefs in patients of various ages and with different health conditions. However, so far only a few studies have specifically investigated the associations between medication beliefs and adherence among elderly in polypharmacy.

METHODS

In this multicenter cross-sectional study we used the MMAS-8 and BMQ Scales to assess medication adherence and beliefs about medications, respectively.

RESULTS

The final sample consisted of 567 patients. Patients reporting higher levels of necessity or concerns about their medicines showed higher adherence (OR: 1.61, and 2.02, respectively; both p<.001). Accepting patients (high necessity and low concerns) were less likely (OR: 0.24; p<.001) to report adherence than ambivalent ones (high necessity and concerns).

CONCLUSIONS

Medication adherence is related to high necessity and concern about treatment. In nursing practice it is important to understand the specific barriers to adherence and to engage patients in the implementation of strategies to improve adherence.

The relationships between illness and treatment perceptions with adherence to diabetes self-care: A comparison between Arabic-speaking migrants and Caucasian English-speaking patients

AIMS

To compare illness and treatment perceptions between Arabic-speaking immigrants and Caucasian English-speaking people with type 2 diabetes, and explore the relationships between these beliefs and adherence to self-care activities.

METHODS

A cross-sectional study was conducted in healthcare settings with large Arabic populations in metropolitan and rural Victoria, Australia. Adherence to self-care activities, illness and treatment perceptions, and clinical data were recorded. Bivariate associations for continuous normally distributed variables were tested with Pearson's correlation. Non-parametric data were tested using Spearman's rank correlation coefficient.

RESULTS

701 participants were recruited; 392 Arabic-speaking participants (ASPs) and 309 English-speaking participants (ESPs). There were significant relationships between participants' illness and treatment perceptions and adherence to diabetes self-care activities. ASPs' negative beliefs about diabetes were strongly and significantly correlated with poorer adherence to diet recommendations, exercise, blood glucose testing and foot care. ASPs were significantly less adherent to all aspects of diabetes self-care compared with ESPs: dietary behaviours (P=<0.01; 95% confidence interval (CI)=-1.17, -0.84), exercise and physical activity (P=<0.001, 95% CI -1.14, -0.61), blood glucose testing (P=<0.001) and foot-care (P=<0.001). 52.8% of ASPs were sceptical about prescribed diabetes treatment compared with only 11.2% of the ESPs. 88.3% of ASPs were non-adherent to prescribed medication, compared with 45.1% of ESPs.

CONCLUSIONS

Arabic-speaking migrants' illness and treatment perceptions were significantly different from the English-speaking group. There is a pressing need to develop new innovative interventions that deliver much-needed improvements in adherence to self-care activities and key health outcomes.

Applying a perceptions and practicalities approach to understanding nonadherence to antiepileptic drugs

OBJECTIVE

Nonadherence to antiepileptic drugs (AEDs) is a common cause of poor seizure control. This study examines whether reported adherence to AEDs is related to variables identified in the National Institute for Health and Clinical Excellence (NICE) Medicines Adherence Guidelines as being important to adherence: perceptual factors (AED necessity beliefs and concerns), practical factors (limitations in capability and resources), and perceptions of involvement in treatment decisions.

METHODS

This was a cross-sectional study of people with epilepsy receiving AEDs. Participants completed an online survey hosted by the Epilepsy Society (n = 1,010), or as an audit during inpatient admission (n = 118). Validated questionnaires, adapted for epilepsy, assessed reported adherence to AEDs (Medication Adherence Report Scale [MARS]), perceptions of AEDs (Beliefs about Medicines Questionnaire [BMQ]), and patient perceptions of involvement in treatment decisions (Treatment Empowerment Scale [TES]).

RESULTS

Low adherence was related to AED beliefs (doubts about necessity: t(577) = 3.90, p < 0.001; and concerns: t(995) = 3.45, p = 0.001), reported limitations in capability and resources (t(589) = 7.78, p < 0.001), and to perceptions of a lack of involvement in treatment decisions (t(623) = 4.48, p < 0.001). In multiple logistic regression analyses, these factors significantly (p < 0.001) increased variance in reported adherence, above that which could be explained by age and clinical variables (seizure frequency, type, epilepsy duration, number of AEDs prescribed).

SIGNIFICANCE

Variables identified in the NICE Medicines Adherence Guidelines as potentially important factors for adherence were found to be related to adherence to AEDs. These factors are potentially modifiable. Interventions to support optimal adherence to AEDs should be tailored to address doubts about AED necessity and concerns about harm, and to overcome practical difficulties, while engaging patients in treatment decisions.

Medication taking behaviors among breast cancer patients on adjuvant endocrine therapy

PURPOSE

To explore how symptoms and psychosocial factors are related to intentional and unintentional non-adherent medication taking behaviors.

METHODS

Included were postmenopausal women with hormone receptor positive, stage I-IIIA breast cancer, who had completed surgery, chemotherapy, and radiation, and were taking endocrine therapy. Self-administered, standardized measures were completed during a routine clinic visit: Brief Fatigue Inventory, Brief Pain Inventory, Menopause Specific Quality of Life Questionnaire, Functional Assessment of Cancer Therapy General and Neurotoxicity scales, and Self-Efficacy for Appropriate Medication Use Scale. Regression analyses were performed to determine the degree to which demographic, medical, symptom, and psychosocial variables, explain intentional, such as changing one's doses or stopping medication, and unintentional, such as forgetting to take one's medication, non-adherent behaviors.

RESULTS

Participants were 112 women: mean age 64 (SD = 9) years; 81% white; mean time from surgery 40 (SD = 28) months; 49% received chemotherapy (39% including a taxane); mean time on endocrine therapy, 35 (SD = 29.6) months; 82% taking an aromatase inhibitor. Intentional and unintentional non-adherent behaviors were described in 33.9% and 58.9% of participants, respectively. Multivariate analysis showed that higher self-efficacy for taking medication was associated with lower levels of unintentional (p = 0.002) and intentional (p = 0.004) non-adherent behaviors. The presence of symptoms (p = 0.03) and lower self-efficacy for physician communication (p = 0.009) were associated with higher levels of intentional non-adherent behaviors.

CONCLUSIONS

These results suggest that women who report greater symptoms, lower self-efficacy for communicating with their physician, and lower self-efficacy for taking their medication are more likely to engage in both intentional and unintentional non-adherent behaviors.

Patient-reported side effects, concerns and adherence to corticosteroid treatment for asthma, and comparison with physician estimates of side-effect prevalence: a UK-wide, cross-sectional study

Background:

Non-adherence to corticosteroid treatment has been shown to reduce treatment efficacy, thus compromising asthma control.

Aims:

To examine the experiences of treatment side effects, treatment concerns and adherence to inhaled (ICS) and oral corticosteroids (OCS) among people with asthma and to identify the degree of concordance between clinician estimates of side effects and the prevalence reported by patients.

Methods:

Asthma UK members were sent validated questionnaires assessing treatment concerns, experiences of side effects and adherence. Questionnaires measuring clinicians’ estimates of the prevalence of corticosteroid side effects were completed online.

Results:

Completed questionnaires were returned by 1,524 people taking ICS, 233 taking OCS and 244 clinicians (67% of clinicians were primary care nurses). Among people with asthma, 64% of those taking ICS and 88% of those taking OCS reported ⩾1 side effect. People reporting high adherence to ICS (t=−3.09, P<0.005) and those reporting low adherence to OCS (t=1.86, P<0.05; one-tailed test) reported more side effects. There was a disparity between clinicians’ estimates of the frequency of side effects and the frequency reported by people with asthma: e.g., although 46% of people taking ICS reported sore throat, clinicians estimated that this figure would be 10%. Patients who reported side effects had stronger concerns about both ICS (r=0.46, P<0.0001) and OCS (r=0.50, P<0.0001). Concerns about corticosteroids were associated with low adherence to ICS (t=6.90, P<0.0001) and OCS (t=1.71; P<0.05; one-tailed test).

Conclusions:

An unexpectedly large proportion of people with asthma experienced side effects and had strong concerns about their treatment, which compromised adherence. These findings have implications for the design of interventions to optimise asthma control through improved adherence.

Real life adherence of chronic hepatitis B patients to entecavir treatment

BACKGROUND

Real-life prospective data on adherence to nucleos(t)ide analogues in chronic hepatitis B patients are scarce.

AIMS

We investigated adherence to entecavir in relation to virological response.

METHODS

In this prospective study, we provided 100 consecutive chronic hepatitis B patients with a medication dispenser that monitored entecavir intake during 16 weeks therapy. Hepatitis B virus (HBV) DNA was measured at baseline and after 16 weeks. Beliefs about medicines were evaluated using a questionnaire.

RESULTS

Adherence over 16 weeks averaged 85 ± 17%, with 70% of patients exhibiting good (i.e. ≥ 80%) adherence. Patients with poor (i.e. <80%) adherence were significantly younger (p=0.01), with more often indifferent attitudes towards entecavir (p=0.03) Viral breakthrough did not occur during the study. Adherence in patients with HBV DNA after 16 weeks > 20 IU/mL (n=18) and ≤ 20 IU/mL (n=81) averaged 83% and 91% respectively (p=0.19). In multivariate analysis, adherence was not a significant predictor of HBV DNA negativity (adjusted OR 1.02; p=0.34), after adjustment for duration of entecavir treatment (p<0.001) and HBe-status (p=0.001).

CONCLUSIONS

70% of chronic hepatitis B patients exhibited good adherence to entecavir, with younger age and an indifferent attitude being risk factors for poor adherence. Poor adherence was not an independent predictor of virological response.

Potential Impact of Incorporating a Patient-Selected Support Person into mHealth for Depression

BACKGROUND

Although telephone care management improves depression outcomes, its implementation as a standalone strategy is often not feasible in resource-constrained settings. Moreover, little research has examined the potential role of self-management support from patients' trusted confidants.

OBJECTIVE

To investigate the potential benefits of integrating a patient-selected support person into automated mobile health (mHealth) for depression.

DESIGN

Patient preference trial.

PARTICIPANTS

Depressed primary care patients who were at risk for antidepressant nonadherence (i.e., Morisky Medication Adherence Scale total score > 1).

INTERVENTION

Patients received weekly interactive voice response (IVR) telephone calls for depression that included self-management guidance. They could opt to designate a lay support person from outside their home to receive guidance on supporting their self-management. Patients' clinicians were automatically notified of urgent patient issues.

MAIN MEASURES

Each week over a period of 6 months, we used IVR calls to monitor depression with the Patient Health Questionnaire-9 (PHQ-9; with total < 5 classified as remission), adherence (single item reflecting perfect adherence over the past week), and functional impairment (any bed days due to mental health).

KEY RESULTS

Of 221 at-risk patients, 61% participated with a support person. Analyses were adjusted for race, medical comorbidity, and baseline levels of symptom severity and adherence. Significant interaction effects indicated that during the initial phase of the program, only patients who participated with a support person improved significantly in their likelihood of either adhering to antidepressant medication (AOR = 1.31, 95% CI: 1.16-1.47, p < 0.001) or achieving remission of depression symptoms (AOR = 1.24, 95% CI: 1.14-1.34, p < 0.001). These benefits were maintained throughout the 6-month observation period.

CONCLUSIONS

Incorporating the "human factor" of a patient-selected support person into automated mHealth for depression self-management may yield sustained improvements in antidepressant adherence and depression symptom remission. However, this needs to be confirmed in a subsequent randomized controlled trial.

Patients' adherence-related beliefs about methotrexate: a qualitative study of the role of written patient information

OBJECTIVES

Methotrexate is effective in treating inflammatory arthritis, but both underadherence and overadherence can put patients at risk. Patients may fail to adhere due to practicalities including the unusual weekly dosing regimen, but medication beliefs also play a role. This study explored how both beliefs about necessity and concerns about methotrexate become established in patients with inflammatory arthritis and how patients use information in managing their beliefs and concerns.

DESIGN

Semistructured interviews were conducted with patients taking oral methotrexate for inflammatory arthritis. Interviews were transcribed verbatim and analysed thematically.

SETTING

Participants were recruited from a single Trust in the East Midlands.

PARTICIPANTS

Fifteen patients (4 male, 11 female) with inflammatory arthritis.

RESULTS

Methotrexate was commonly prescribed at the time of diagnosis; at this point, experience of illness was influential for beliefs about medication necessity. Following prescription, patients absorbed information from written and verbal sources which reinforced beliefs about necessity but also raised concerns, including fear of side effects. Over time, beliefs were modified on the basis of personal experience, particularly of medication effectiveness and side effects. Some patients described tensions and dissonance in their beliefs and experiences of methotrexate, which put them at risk of non-adherence. Patients used information-seeking and information-avoidance as strategies to resolve these tensions. The available information did little to help suppress dissonance and sometimes exacerbated it.

CONCLUSIONS

Patients' experiences of coming to terms with taking methotrexate are complex, and their experiences of dissonance are particularly problematic. Experiences might be improved by supporting patients to assess necessity (particularly in the presence of side effects) and by providing information to moderate unnecessary concerns. Improving recording and sharing of monitoring results may be one way to meet these needs.

Concerns and perceptions about necessity in relation to insulin therapy in an ethnically diverse UK population with Type 2 diabetes: a qualitative study focusing mainly on people of South Asian origin

AIM

To explore attitudes towards insulin acceptance an ethnically diverse population of people with Type 2 diabetes.

METHODS

We conducted semi-structured interviews using a topic guide based on a literature review and findings from our previous study, which explored the perspectives of healthcare professionals about insulin initiation and management. Analysis of data involved undertaking an abductive reasoning approach in response to emerging themes.

RESULTS

Participants discussed not only their concerns about insulin therapy, but also their views and beliefs about the necessity of insulin. Their attitudes to insulin treatment could be mapped into four main typologies. These fitted with an attitudinal scale based on the Necessity-Concerns Framework described in the medication adherence literature, comprising four attitudes: accepting, sceptical, ambivalent and indifferent. Decisions about accepting insulin involved balancing concerns (such as needle size) against the perceived necessity of insulin (generally, inadequacy of oral medication). The South Asian and white participants had similar concerns, but these were sometimes greater in South Asian participants, because of the influence of negative views and experiences of other insulin users.

CONCLUSIONS

When discussing insulin with people with Type 2 diabetes, healthcare providers need to ensure that they explore and contribute to patients' understanding and interpretation of the necessity of insulin as well as discussing their concerns. Furthermore, they should be aware of how an individual's social context can influence his/her perceptions about the necessity of insulin as well as their concerns, and that this influence may be greater in some South Asian populations.

Beliefs about medicines in Dutch acenocoumarol and phenprocoumon users

AIMS

Adherence to the generally complex regimen of coumarin derivatives is vital in order to keep patients in the adequate International Normalized Ratio range. Patients' beliefs about medicines are associated with the level of therapy adherence. Our first aim was to assess beliefs about coumarins. Secondly, we compared the beliefs about coumarins with the beliefs about other cardiovascular drugs.

METHODS

The Beliefs about Medicines Questionnaire was used to assess medication beliefs. The questionnaire was completed by new users of coumarins indicated for venous thromboembolism or atrial fibrillation. A necessity score and a concerns score were calculated for all patients. The analyses were repeated for users of antihypertensive drugs or statins (not using coumarins).

RESULTS

Three hundred and twenty patients were included in the analysis of the beliefs about coumarins. The mean necessity score was 15.3, the concerns score 12.3 and the necessity-concerns differential 3.0. Patients with venous thromboembolism (n = 71) had higher necessity scores than patients with atrial fibrillation (n = 249; 16.8 vs. 14.9, P < 0.001). The mean necessity score in 493 users of other cardiovascular drugs was 16.1, the concerns score 13.5 and the necessity-concerns differential 2.6. The necessity score was higher in chronic cardiovascular drug users (n = 192) than in new users (n = 301; 17.9 vs. 14.9, P < 0.001).

CONCLUSIONS

Coumarin users score higher on the necessity scale than on the concerns scale, which is also the case in users of other cardiovascular drugs. Patients with atrial fibrillation have a less positive attitude towards these drugs than patients with venous thromboembolism, and could therefore benefit more from specific attention.

The necessity-concerns framework: a multidimensional theory benefits from multidimensional analysis

BACKGROUND

Patients' medication-related concerns and necessity-beliefs predict adherence. Evaluation of the potentially complex interplay of these two dimensions has been limited because of methods that reduce them to a single dimension (difference scores).

PURPOSE

We use polynomial regression to assess the multidimensional effect of stroke-event survivors' medication-related concerns and necessity beliefs on their adherence to stroke-prevention medication.

METHODS

Survivors (n = 600) rated their concerns, necessity beliefs, and adherence to medication. Confirmatory and exploratory polynomial regression determined the best-fitting multidimensional model.

RESULTS

As posited by the necessity-concerns framework (NCF), the greatest and lowest adherence was reported by those necessity weak concerns and strong concerns/weak Necessity-Beliefs, respectively. However, as could not be assessed using a difference-score model, patients with ambivalent beliefs were less adherent than those exhibiting indifference.

CONCLUSIONS

Polynomial regression allows for assessment of the multidimensional nature of the NCF. Clinicians/Researchers should be aware that concerns and necessity dimensions are not polar opposites.

Integrating support persons into diabetes telemonitoring to improve self-management and medication adherence

OBJECTIVE

The purpose of this study was to investigate the potential benefits for medication adherence of integrating a patient-selected support person into an automated diabetes telemonitoring and self-management program, and to determine whether these benefits vary by patients' baseline level of psychological distress.

STUDY DESIGN

The study was a quasi-experimental patient preference trial.

METHODS

The study included patients with type 2 diabetes who participated in three to six months of weekly automated telemonitoring via interactive voice response (IVR) calls, with the option of designating a supportive relative or friend to receive automated updates on the patient's health and self-management, along with guidance regarding potential patient assistance. We measured long-term medication adherence using the four-point Morisky Medication Adherence Scale (MMAS-4, possible range 0-4), weekly adherence with an IVR item, and psychological distress at baseline with the Mental Composite Summary (MCS) of the SF-12.

RESULTS

Of 98 initially nonadherent patients, 42% opted to involve a support person. Participants with a support person demonstrated significantly greater improvement in long-term adherence than those who participated alone (linear regression slopes: -1.17 vs. -0.57, respectively, p =0.001). Among distressed patients in particular, the odds of weekly nonadherence tended to decrease 25% per week for those with a support person (p =0.030), yet remained high for those who participated alone (p =0.820).

CONCLUSIONS

Despite their multiple challenges in illness self-management, patients with diabetes who are both nonadherent and psychologically distressed may benefit by the incorporation of a support person when they receive assistance via automated telemonitoring.

Antidepressant medication treatment patterns in Asian patients with major depressive disorder

PURPOSE

To describe pharmacological treatment patterns in Asian patients with major depressive disorder (MDD), including duration of treatment, reasons for medication discontinuation, rate of medication nonadherence, factors associated with medication nonadherence, and impact of medication nonadherence on depression outcomes.

PATIENTS AND METHODS

Data were from a prospective, observational 3-month study of East Asian MDD inpatients from 40 sites in six East Asian countries who initiated antidepressant treatment at baseline (n=569). Assessments included the Clinical Global Impression-Severity scale (CGI-S), 17-item Hamilton Depression Rating Scale (HAMD-17), painful physical symptoms, response and remission, employment status, quality of life (QoL) (EuroQOL Questionnaire-5 Dimensions [EQ-5D]) and health state using the visual analog scale, adherence by clinician opinion, and patient self-report. Cox proportional hazards modeling, Kaplan-Meier survival analysis, and regression modeling were employed.

RESULTS

Median time to discontinuation for any reason was 70 days (95% confidence interval: 47; 95). Reasons for discontinuation were inadequate response in 64.1%, nonadherence in 6.2%, and adverse events in 4.1%; 25.6% who discontinued experienced an adequate response to treatment. In those patients who had an adequate response, age and country were significantly associated with time to medication discontinuation. Patient-reported nonadherence was 57.5% and clinician-reported nonadherence was 14.6% (62/426). At 3 months, nonadherent patients had significantly higher disease severity (CGI-S, P=0.0001; HAMD-17, P<0.0001), lower QoL ratings (EQ-5D tariff, P=0.0007; EQ-5D visual analog scale, P=0.0024), and lower response and remission rates (both P<0.0001) compared with adherent patients. The odds of response and remission were greater among adherent patients.

CONCLUSION

Early discontinuation of antidepressants among Asian MDD patients was high. A total of 25.6% who discontinued prematurely were experiencing an adequate response to treatment. Nonadherent patients had significantly higher disease severity, lower QoL ratings, and lower response and remission rates compared with adherent patients.

Profiling patient attitudes to phosphate binding medication: a route to personalising treatment and adherence support

OBJECTIVE

Nonadherence to phosphate binding medication (PBM) compromises the efficacy of treatment for chronic kidney disease, but its causes are poorly understood. This study sought to explore patient attitudes towards PBM and to evaluate the utility of the necessity-concerns framework for understanding adherence to PBM.

DESIGN

A sample of 221 dialysis patients currently prescribed PBM were surveyed from eight UK renal units.

MAIN OUTCOME MEASURES

Demographic data and clinical information, alongside the Beliefs about Medicines Questionnaire and the medication adherence report scale were reported.

RESULTS

Low adherence to PBM was predicted by reduced beliefs in personal need for PBM (OR = .34; 95% CI: .14-.83; p < .05), and increased concerns about PBM (OR = 3.17; 95% CI: 1.87-5.37; p < .001). Patients were categorised into attitudinal groups based on their beliefs about PBM and being 'skeptical' of PBM (low necessity beliefs and high concerns) was most associated with low adherence.

CONCLUSION

Strategies to improve adherence to PBM should aim to elicit and address patients' beliefs about their personal need for PBM and their concerns about this medication.

Primary-care patients' trade-off preferences with regard to antidepressants

BACKGROUND

Antidepressants are frequently prescribed but results regarding their efficacy have been equivocal for different spectra of the severity continuum and their side-effects are often burdensome. Non-adherence is a likely consequence. The objective was therefore to examine patients' trade-offs between the efficacy, side-effects and other drawbacks of antidepressants and whether these trade-offs predicted non-adherence.

METHOD

Trade-offs from 225 antidepressant users, recruited through community pharmacies, were assessed with an Adaptive Conjoint Analysis (ACA) choice task that was customized to each individual patient. From the estimated utilities, relative importance scores of treatment properties were calculated. Non-adherence was measured through self-report and pharmacy refill data.

RESULTS

Relapse prevention and symptom relief were on average equally important. Side-effects were as important and the side-effect stomach and intestine complaints was on average even slightly more important than relapse prevention and symptom relief. Additional treatment with psychotherapy was preferred by 61% of the patients. A benefit/drawback ratio revealed that 18% of the patients did not consider the efficacy to outweigh the drawbacks. A higher benefit/drawback ratio was associated with a decreased odds of intentional non-adherence [odds ratio (OR) 0.2, 95% confidence interval (CI) 0.07-0.7, Wald = 6.7, p = 0.01).

CONCLUSIONS

For nearly one in five patients, the efficacy of antidepressants does not outweigh their drawbacks. Knowing patients' trade-offs is likely to aid both physicians and patients to identify important treatment preferences, to improve adherence and to make more deliberate decisions on whether or not to continue treatment.

Effects of a TELephone Counselling Intervention by Pharmacist (TelCIP) on medication adherence, patient beliefs and satisfaction with information for patients starting treatment: study protocol for a cluster randomized controlled trial

BACKGROUND

Adherence to medication is often low. Pharmacists may improve adherence, but a one-size-fits-all approach will not work: different patients have different needs. Goal of the current study is to assess the effectiveness of a patient-tailored, telephone-based intervention by a pharmacist at the start of pharmacotherapy aimed at improving medication adherence, satisfaction with information and counselling and the beliefs about medicines.

METHODS/DESIGN

A cluster randomized controlled intervention trial in 30 Dutch pharmacies, randomly assigned to 1 of 2 intervention groups. Each group consists of an intervention arm and an usual care arm. The intervention arm in the first group is the usual care arm in the second group and vice versa. One intervention arm focuses on patients starting with antidepressants or bisphosphonates and the other on antilipaemic drugs or renin angiotensin system (RAS)-inhibitors. The intervention consists of a telephone call by a pharmacist 2 or 3 weeks after a new prescription. A random sample of pharmacies will send questionnaires 3 months after the first prescription. This contains socio-demographic questions, a measure of beliefs about medicines (BMQ), satisfaction with information received (SIMS, abbreviated) and frequency of pharmacy counselling (Consumer Quality Index, CQI, abbreviated). The primary outcome measure will be medication adherence calculated from dispensing records retrieved 12 months after the intervention. Patients' beliefs on medication, perception of the quality of information received and pharmacy counselling are secondary outcomes.

DISCUSSION

The TelCIP study will determine the effectiveness of telephone counselling to improve adherence in patients initiating a new treatment. By measuring satisfaction with information and counselling and beliefs about medication the study will also give clues for the reason of a potential increase in adherence. Finally the study will provide information on which patients are most likely to benefit from this intervention.

TRIAL REGISTRATION

The trial is registered at http://www.trialregister.nl under the identifier NTR3237.

Modifiable risk factors for adherence to adjuvant endocrine therapy among breast cancer patients

OBJECTIVE

Breast cancer incidence and mortality are declining due to improvements in early detection and treatment. One advance in treatment is the development of adjuvant endocrine therapy (AET) for women with hormone receptor positive breast cancer. Despite strong evidence linking AET to better health outcomes, AET adherence continues to be suboptimal. This study tests the hypothesis that patient beliefs about medication mediate the relationship between frequency of physician communication and AET adherence.

METHODS

This cross-sectional study utilizes data from patient self-report and medical chart abstraction (N=200). Survey measures included frequency of physician communication, patient beliefs about medicine, AET adherence, and demographic characteristics.

RESULTS

Necessity beliefs mediated the relationship between frequency of physician communication and medication adherence (necessity beliefs β=.18, p<.05; physician communication β=.13, p>.05). There was no evidence of medication concerns mediating the relationship between frequency of physician communication and medication adherence.

CONCLUSION

More frequent physician communication that shapes what patients believe about AET importance may be associated with greater AET adherence; however, frequent physician communication that shapes patient concerns about side effects may not be associated with greater AET adherence.

PRACTICE IMPLICATIONS

Research is needed to enhance understanding of the type of physician communication that is most consistently associated with patient beliefs about medication and AET adherence.

Antidepressant utilization after hospitalization with depression: a comparison between non-Western immigrants and Danish-born residents

BACKGROUND

Antidepressant (AD) therapy is recommended for patients 4-12 months after remission from depression. The aim was to examine whether immigrants (refugees or family reunited immigrants) from non-Western countries are at greater risk than Danish-born residents of 1) not initiating AD therapy after discharge and 2) early AD discontinuation.

METHODS

A cohort of immigrants from non-Western countries (n = 132) and matched Danish-born residents (n = 396) discharged after first admission with moderate to severe depression between 1 January 1996 and 31 May 2008 was followed in the Danish registries.Logistic regression models were applied to explore AD initiation within 30 days after discharge, estimating odds ratio (OR) for immigrants versus Danish-born residents.Early discontinuation was explored by logistic regression, estimating OR for no AD dispensing within 180 days after the first dispensing, and by Cox regression, estimating hazard ratio (HR) for discontinuation (maximum drug supply gap) within 180 days.

RESULTS

Immigrants had higher odds for not initiating AD treatment after discharge than Danish-born residents (OR = 1.55; 95% CI: 1.01-2.38). When income was included in the model, the strength of the association was attenuated. Odds for early discontinuation was non-significantly higher among immigrants than Danish-born residents (OR = 1.80; 0.87-3.73). Immigrants also had a non-significantly higher hazard of early discontinuation (HR = 1.46; 95% CI: 0.87-2.45). Including income had only minor impact on these associations.

CONCLUSION

Immigrants seem less likely to receive the recommended AD treatment after hospitalization with depression. This may indicate a need for a better understanding of the circumstances of this vulnerable group.

Pharmacist self-reported antidepressant medication counseling

OBJECTIVES

To identify the extent of pharmacists' self-reported antidepressant counseling (SRAC) and to identify factors that may affect pharmacists' decisions to provide antidepressant counseling.

DESIGN

Cross-sectional study.

SETTING

Alabama community pharmacies in 2011.

PARTICIPANTS

Full-time pharmacists from 600 community pharmacies.

INTERVENTION

Self-administered survey; three mail contacts with alternate electronic surveys were used.

MAIN OUTCOME MEASURES

Pharmacists' SRAC behavior and its relationship with pharmacists' illness perceptions of depression, self-efficacy, and organizational and environmental influences.

RESULTS

600 surveys were sent; 22 were undeliverable, 1 was partially completed (<80% questions answered), and 118 were completed (20.6% overall response rate). Pharmacists reported low rates of involvement in antidepressant counseling; 61% reported assessing patient knowledge and understanding of depression, and 36% discussed options for managing adverse effects with no more than a few patients. More than one-quarter (28.6%) never asked patients whether they had barriers to taking antidepressants. Pharmacists' perceptions regarding consequences, control/cure, and the episodic nature of depression, as well as their self-efficacy, had significant relationships ( P < 0.05) with pharmacists' involvement in antidepressant counseling.

CONCLUSION

Low rates of pharmacists' involvement in antidepressant counseling were reported. Pharmacists must become more involved in counseling patients about their antidepressant medications and overcoming barriers preventing greater involvement.

Patients' perspectives on antiepileptic medication: relationships between beliefs about medicines and adherence among patients with epilepsy in UK primary care

BACKGROUND

Nonadherence to antiepileptic drugs (AEDs) can result in suboptimal outcomes for patients.

AIM

This study aimed to assess the utility of a theory-based approach to understanding patient perspectives on AEDs and adherence.

METHOD

Patients with epilepsy, identified by a GP case note review, were mailed validated questionnaires assessing their perceptions of AEDs and their adherence to them.

RESULTS

Most (84.9%) of the 398 AED-treated respondents accepted the necessity of AEDs, but over half expressed doubts, with 55% disagreeing or uncertain about the statement 'I would prefer to take epilepsy medication than risk a seizure'. Over a third (36.4%) expressed strong concerns about the potential negative effects of AEDs. We used self-report and medication possession ratio to classify 36.4% of patients as nonadherent. Nonadherence was related to beliefs about medicines and implicit attitudes toward AEDs (p<0.05). Adherence-related attitudes toward AEDs were correlated with general beliefs about pharmaceuticals (BMQ General: General Harm, General Overuse, and General Benefit scales) and perceptions of personal sensitivity to medicines (PSM scale).

CONCLUSION

We identified salient, adherence-related beliefs about AEDs. Patient-centered interventions to support medicine optimization for people with epilepsy should take account of these beliefs.

Adherence to antidepressant treatment

Depression is a common disorder with painful symptoms and, frequently, social impairment and decreased quality of life. The disorder has a tendency to be long lasting, often with frequent recurrence of symptoms. The risk of relapse and the severity of the symptoms may be reduced by correct antidepressant medication. However, the medication is often insufficient, both in respect to dosage and length of time. The reasons for incorrect medication are many, with lack of adherence to treatment being the most important. Although some patients taking antidepressant medication experience side effects, this may not be the most frequent reason for immature discontinuation of treatment. Other reasons for decreased adherence have been investigated in recent years. The patient's beliefs about the disorder and beliefs about antidepressants, including lack of conviction that the medication is needed and fear of dependence of antidepressant medicine, have a great influence on adherence to treatment.

Antidepressants in primary care: patients' experiences, perceptions, self-efficacy beliefs, and nonadherence

PURPOSE

Patient adherence to antidepressants is poor. However, this is rather unsurprising, given the equivocal efficacy, side effects, and practical problems of antidepressants. The aim of this study was to examine a wide array of patient experiences and perceptions regarding the efficacy, side effects, and practical problems of antidepressants, as well as their associations with nonadherence, and whether patients' perceived self-efficacy moderated these associations.

PATIENTS AND METHODS

Experiences and perceptions of 225 patients, recruited through community pharmacies, were efficiently assessed with the Tailored Medicine Inventory. Nonadherence was assessed through self-report and pharmacy refill data.

RESULTS

Many patients were not convinced of the efficacy, thought the efficacy to be limited or did not believe antidepressants to prevent relapse, were worried about or had experienced one or more side effects, and/or had experienced one or more practical problems regarding information, intake, and packaging. Being convinced of efficacy was associated with lower intentional nonadherence (odds ratio [OR] 0.9, 95% confidence interval [CI] 0.8-0.96). A higher number of practical problems experienced was associated with increased unintentional nonadherence (OR 1.3, 95% CI 1.1-1.7). Higher perceived self-efficacy regarding taking antidepressants was associated with lower unintentional nonadherence (OR 0.7, 95% CI 0.5-0.9). Perceived self-efficacy did not moderate associations of patient experiences and perceptions with nonadherence.

CONCLUSION

Assessing a wide array of patients' experiences and perceptions regarding the efficacy, side effects, and practical problems of antidepressants contributes to better understanding of nonadherence to antidepressants. Guiding physician-patient conversations by patients' experiences and perceptions may reduce both unintentional and intentional nonadherence. Also, it may give rise to considerations of prudent discontinuation, eg, when patients are not convinced of the efficacy.

A randomized controlled trial of the effectiveness of planning strategies in the adherence to medication for coronary artery disease

AIM

To examine the effect of action and coping planning strategies in the adherence to medication among outpatients with coronary artery disease.

BACKGROUND

Action and coping planning strategies are based on implementation intention, which requires self-regulation by the individual, to prioritize intentionally planned responses over learned or habitual ones, from daily routines to stressful situations.

DESIGN

Randomized controlled trial.

METHODS

Participants (n = 115) were randomized into intervention (use of action and coping planning strategies, n = 59) or control (usual care, n = 56) groups. The study was conducted between June 2010-May 2011 in two in-person visits: baseline and 2-month follow-up. Participants in the intervention group received telephone reinforcement between baseline and 2-month follow-up. Adherence to medication for cardioprotection and symptoms relief was evaluated by proportion of adherence, global measure of adherence evaluation and Morisky Self-Reported Measure of Medication Adherence Scale at both baseline and 2-month follow-up.

FINDINGS

When using the measure of global measure of adherence, participants in the intervention group reported adherence to therapy more often than controls (odds ratio = 5.3), but no statistically significant change was observed in the other two outcome measures.

CONCLUSION

This study has shown that individuals who use action and coping planning report higher adherence to drug treatment, when measured by the global adherence evaluation. Further studies with longer follow-ups are needed to assess if the effect of planning strategies has long-term duration.

Understanding patients' adherence-related beliefs about medicines prescribed for long-term conditions: a meta-analytic review of the Necessity-Concerns Framework

BACKGROUND

Patients' beliefs about treatment influence treatment engagement and adherence. The Necessity-Concerns Framework postulates that adherence is influenced by implicit judgements of personal need for the treatment (necessity beliefs) and concerns about the potential adverse consequences of taking it.

OBJECTIVE

To assess the utility of the NCF in explaining nonadherence to prescribed medicines.

DATA SOURCES

We searched EMBASE, Medline, PsycInfo, CDSR/DARE/CCT and CINAHL from January 1999 to April 2013 and handsearched reference sections from relevant articles.

STUDY ELIGIBILITY CRITERIA

Studies using the Beliefs about Medicines Questionnaire (BMQ) to examine perceptions of personal necessity for medication and concerns about potential adverse effects, in relation to a measure of adherence to medication.

PARTICIPANTS

Patients with long-term conditions.

STUDY APPRAISAL AND SYNTHESIS METHODS

Systematic review and meta-analysis of methodological quality was assessed by two independent reviewers. We pooled odds ratios for adherence using random effects models.

RESULTS

We identified 3777 studies, of which 94 (N = 25,072) fulfilled the inclusion criteria. Across studies, higher adherence was associated with stronger perceptions of necessity of treatment, OR = 1.742, 95% CI [1.569, 1.934], p<0.0001, and fewer Concerns about treatment, OR = 0.504, 95% CI: [0.450, 0.564], p<0.0001. These relationships remained significant when data were stratified by study size, the country in which the research was conducted and the type of adherence measure used.

LIMITATIONS

Few prospective longitudinal studies using objective adherence measures were identified.

CONCLUSIONS

The Necessity-Concerns Framework is a useful conceptual model for understanding patients' perspectives on prescribed medicines. Taking account of patients' necessity beliefs and concerns could enhance the quality of prescribing by helping clinicians to engage patients in treatment decisions and support optimal adherence to appropriate prescriptions.

Factors impacting decisions to decline or adhere to antidepressant medication in perinatal women with mood and anxiety disorders

PURPOSE

To identify specific quantitative and qualitative factors that govern the decision to adhere or decline antidepressant medication in antenatal women with moderate-to-severe mood and anxiety disorders.

METHODS

Fifty women (30 adherers, 20 decliners) were recruited between 18 and 34 weeks gestation in a tertiary care clinic for perinatal mothers. They were prospectively monitored 4 weeks apart up to 1-month postpartum on the: Hamilton Anxiety Scale, Hamilton Depression Scale, Mood Disorders Insight Scale, Antidepressant Compliance Questionnaire, Penn State Worry Questionnaire, and NEO Personality Inventory. Qualitative interviews were conducted at baseline. Hierarchical linear modeling determined illness trajectories of the two groups.

RESULTS

Significantly different course of illness was observed in adherers versus decliners. Adherers had healthier attitudes toward depression and compliance with medication (P < .005). Decliners had less illness insight (P < .001) and cited fear of fetal exposure, and thought medication was unwarranted.

CONCLUSIONS

Pregnant women experienced significantly divergent illness trajectories depending on if they accepted antidepressant medication therapy for their illness. Risk perception, attitudes, and illness insight impacted decisions surrounding adherence and decline.