Investigating the association between health literacy and non-adherence

Drivers of citations in social pharmacy and practice research articles

BACKGROUND

Research in Social and Administrative Pharmacy has been expanding in the last decade. The recently published Granada Statements offer key recommendations to improve the quality of research in this field.

OBJECTIVES

To identify the factors associated with the citations of articles in the field of social, administrative, clinical pharmacy and practice research.

METHODS

This study was a retrospective, observational analysis of articles published in three leading journals. Per article Google Scholar citations was the dependent variable. Predictor variables were extracted from all articles published from 2013 to 2015. The dependent variable was dichotomized using sample's median Google Scholar citations. Logistic regression analysis was performed to identify independent predictors of citations ≥ median.

RESULTS

The median number of citations per article was 17 (range 0-341), with a mean of 24.2 (SD 27.6). The number of references included in the articles (OR 1.03, CI 1.02-1.04), the year of publication (OR 0.31 CI 0.21-0.46 for articles published 2015), article social media mentions (OR = 1.01, CI 1.01-1.03 and OR 1.10 CI 1.04-1.18 for Facebook and X, respectively), the topic area of research namely pharmacy services (OR 1.65, CI 1.06-2.57) and medication adherence (OR 2.22 CI 1.13-4.33) were independently associated with article having citations ≥ median.

CONCLUSIONS

The number of references, the year of publication, social media mentions and the topic area of research, namely pharmacy services and medication adherence, were associated with citations above median in the leading journals of social and administrative pharmacy research. Authors may consider providing a thorough literature review in their articles, while researchers, editors, and publishers are advised to use social media to promote newly published work. This article complements the Granada Statements and may contribute to fostering wider dissemination of the discipline's outputs.

Prevalence and Patient-Level Correlates of Intentional Non-Adherence to Immunosuppressive Medication After Heart-Transplantation-Findings From the International BRIGHT Study

After heart transplantation (HTx), non-adherence to immunosuppressants (IS) is associated with poor outcomes; however, intentional non-adherence (INA) is poorly understood regarding its international variability in prevalence, contributing factors and impact on outcomes. We investigated (1) the prevalence and international variability of INA, (2) patient-level correlates of INA, and (3) relation of INA with clinical outcomes. Secondary analysis of data from the BRIGHT study-an international multi-center, cross-sectional survey examining multi-level factors of adherence in 1,397 adult HTx recipients. INA during the implementation phase, i.e., drug holiday and dose alteration, was measured using the Basel Assessment of Adherence to Immunosuppressive Medications Scale© (BAASIS©). Descriptive and inferential analysis was performed with data retrieved through patient interview, patient self-report and in clinical records. INA prevalence was 3.3% (n = 46/1,397)-drug holidays: 1.7% (n = 24); dose alteration: 1.4% (n = 20); both: 0.1% (n = 2). University-level education (OR = 2.46, CI = 1.04-5.83), insurance not covering IS costs (OR = 2.21, CI = 1.01-4.87) and barriers (OR = 4.90, CI = 2.73-8.80) were significantly associated with INA; however, clinical outcomes were not. Compared to other single-center studies, this sample's INA prevalence was low. More than accessibility or financial concerns, our analyses identified patient-level barriers as INA drivers. Addressing patients' IS-related barriers, should decrease INA.

Relationship between People's Interest in Medication Adherence, Health Literacy, and Self-Care: An Infodemiological Analysis in the Pre- and Post-COVID-19 Era

The prevalence of non-communicable diseases has risen sharply in recent years, particularly among older individuals who require complex drug regimens. Patients are increasingly required to manage their health through medication adherence and self-care, but about 50% of patients struggle to adhere to prescribed treatments. This study explored the relationship between interest in medication adherence, health literacy, and self-care and how it changed during the COVID-19 pandemic. We used Google Trends to measure relative search volumes (RSVs) for these three topics from 2012 to 2022. We found that interest in self-care increased the most over time, followed by health literacy and medication adherence. Direct correlations emerged between RSVs for medication adherence and health literacy (r = 0.674, p < 0.0001), medication adherence and self-care (r = 0.466, p < 0.0001), and health literacy and self-care (r = 0.545, p < 0.0001). After the COVID-19 pandemic outbreak, interest in self-care significantly increased, and Latin countries showed a greater interest in self-care than other geographical areas. This study suggests that people are increasingly interested in managing their health, especially in the context of the recent pandemic, and that infodemiology may provide interesting information about the attitudes of the population toward chronic disease management.

Relationship Between Health Literacy, Quality of Life, and Treatment Adherence in Patients with Acute Coronary Syndrome

BACKGROUND

Acute coronary syndrome is a significant global health concern that can affect patients' health outcomes and quality of life. In addition, adherence to treatment and health literacy can affect health outcomes.

OBJECTIVE

This study aimed to investigate the relationship between treatment adherence, health literacy, and quality of life among patients with acute coronary syndrome.

METHODS

This cross-sectional study was conducted on 407 patients in Iran from April 2019 to November 2019. Patients were selected by convenience sampling method. Data were collected using demographic questionnaire, World Health Organization Quality of Life Brief Version, Adherence to Treatment Questionnaire, and Health Literacy for Iranian Adults questionnaire. SPSS 25 was used for statistical analysis.

RESULTS

Based on descriptive statistics in this study, most of the participants had good treatment adherence level (56.5%); 28.7% of the participants had insufficient health literacy level. The mean score of quality of life was 51.41 ± 12.03, which was greater than the midpoint of the questionnaire. Furthermore, Pearson's correlation coefficient showed a negative association between health literacy, treatment adherence (r = -0.167, p < .01), and quality of life (r = -0.153, p < .01), and a positive association between treatment adherence and quality of life (r = 0.169, p < .01).

CONCLUSION

The results of the current study showed a negative relationship between health literacy, quality of life, and treatment adherence among patients with acute coronary syndrome. [HLRP: Health Literacy Research and Practice. 2023;7(2):e71-e79.].

Association between health literacy and medication adherence in chronic diseases: a recent systematic review

BACKGROUND

Poor medication adherence is a serious barrier to successful chronic disease management. Previous reviews reported that low health literacy could be associated with medication non-adherence but conclusions were uncertain.

AIM

The aim of this systematic review was to clarify the relationship between health literacy and medication adherence in adults with chronic diseases. A secondary objective was to identify the factors that influence medication adherence.

METHOD

Publications analyzing the relationship between health literacy and adherence in adults with chronic diseases were identified through 6 databases between 2015 and 2020. A quality assessment was conducted in order to improve the interpretation of the relationship between health literacy and medication adherence. A narrative synthesis was then performed to describe the relationship between health literacy and medication adherence. The factors influencing medication adherence were then analyzed as a secondary outcome.

RESULTS

Among the 27 studies, 17 and 10 were considered to be of good and medium methodological quality, respectively. Concerning the relationship between health literacy and adherence, 14 reported a positive relationship, 1 study suggested a negative relationship, 3 found mixed results, and 9 reported not finding a relationship. Patient-related factors such as medication beliefs, self-efficacy, or medication knowledge, as well as demographic factors such as ethnic minority and incomes influence medication adherence.

CONCLUSION

The present review confirms an unclear relationship between health literacy and medication adherence. Although health literacy plays a substantial role in medication adherence, other factors must be taken into account when addressing non-adherence.

Association between Self-Medication for Mild Symptoms and Quality of Life among Older Adults in Rural Japan: A Cross-Sectional Study

Self-medication, a help-seeking behavior to control individual symptoms, can be promoted to prevent the overuse of medical care and improve self-management among older adults. However, evidence regarding the association between self-medication and quality of life (QOL) is lacking. The purpose of this study is to investigate the association between QOL and the usage of self-medication among rural older adults. This cross-sectional study included participants older than 65 years in rural Japanese communities. Data were collected using a questionnaire regarding self-medication trends, the EQ-5D-5L to assess QOL, and a demographics questionnaire. Participants were divided into exposure and control groups based on their tendencies toward self-medication usage. Differences in the demographics between groups were adjusted using propensity score matching. Results: The health status in the exposure group was statistically significantly better than that in the control group in the dimensions of movement, self-care, and usual activities. Conversely, the pain/discomfort and anxiety/depression dimensions were not statistically significantly different. The quality of self-medication behaviors for mild symptoms can be improved with practical knowledge of and access to home remedies and over-the-counter drugs. Educational interventions and system development for better self-medication for mild symptoms and medical care for critical symptoms in rural contexts can be effective in improving QOL among rural older adults.

Health literacy and medication adherence in psoriasis patients: a survey in Iran

BACKGROUND

Medication adherence among Psoriasis patients is often inadequate identified as a significant problem in Psoriasis symptoms management. Poor medication adherence could necessitate stronger and more expensive medications, which could place a significant burden on the healthcare system. Moreover, the importance of health literacy assessment as a factor influencing adherence in psoriasis patients cannot be overstated. This study aimed to evaluate the medication adherence level of Iranian Psoriasis patients and its relationship with the patients' health literacy level and demographic conditions.

METHODS

This is a cross-sectional study among Iranian psoriasis patients conducted through a web-based questionnaire survey between 26 July 2020 and 5 January 2021 and a total of 575 samples were collected. The questionnaire consisted of 3 sections: First, demographic information and disease characteristics were evaluated. Second, the medication adherence was evaluated by using valid Morisky Medication Adherence Scale-8 (MMAS-8), and, finally, the health literacy was evaluated by using Health Literacy for Iranian Adults (HELIA). Data were analyzed using SPSS software, version 22 with descriptive statistics; Chi-square and Kruskal-Wallis tests. Stepwise multiple linear regression was also used to evaluate the impact of independent variables related on medication adherence score.

RESULTS

Results showed that the mean health literacy score in the study population was 74.3 ± 14.23, and the mean medication adherence score was 4.1 ± 2.18. Out of the total participants, 28.8% had high health literacy, 67.1% had adequate health literacy, and 4% had inadequate health literacy. The majority of the participants (70.7%) reported low adherence, while 24.1% reported moderate and 5.2% reported high adherence. The results of the Chi-square test showed a significant relationship between age, comorbidities, type of treatment, satisfaction with treatment, the experience of adverse effects, and health literacy with medication adherence (P < 0.05 for all). The final constructed model of stepwise multiple linear regression was highly statistically significant. The highest beta coefficient in the final model belonged to the total health literacy score.

CONCLUSIONS

Based on the results, medication adherence among Iranian psoriasis patients is low. Health literacy correlates most strongly with medication adherence and is the best variable to determine it. Improving the access to the internet and the ICTs to enhance the patients` health literacy along with developing the patient education approaches and techniques should be considered by health policymakers.

The impact of poor medication knowledge on health-related quality of life in people with Parkinson's disease: a mediation analysis

PURPOSE

This study aimed to determine how limited medication knowledge as one aspect of health literacy contributes to poorer health-related quality of life (HRQoL) in people with Parkinson's disease (PD).

METHODS

Demographical data, PD-specific data (MDS-Unified Parkinson's Disease-Rating Scale, Nonmotor symptom scale), and data about depressive symptoms (Beck's depression inventory), cognition (Montreal cognitive assessment), HRQoL (Short-Form Health Questionnaire-36, SF-36), and medication knowledge (names, time of taking, indication, dosage) were assessed in 193 patients with PD. Multivariate analysis of variance (MANOVA), multivariate analysis of covariance, and mediation analyses were used to study the relationship between medication knowledge and HRQoL in combination with different mediators and covariates.

RESULTS

Overall, 43.5% patients showed deficits in at least one of the 4 knowledge items, which was associated with higher age, number of medications per day and depression level, and poorer cognitive function, motor function, and lower education level. Using one-way MANOVA, we identified that medication knowledge significantly impacts physical functioning, social functioning, role limitations due to physical problems, and role limitations due to emotional problems. Mediation models using age, education level, and gender as covariates showed that the relationship between knowledge and SF-36 domains was fully mediated by Beck's Depression Inventory but not by Montreal Cognitive Assessment.

CONCLUSIONS

Patients who expressed unawareness of their medication did not necessarily have cognitive deficits; however, depressive symptoms may instead be present. This concomitant depressive symptomatology is crucial in explaining the contribution of nonadherence and decreased medication knowledge to poor quality of life.

Relationship Between Family Functioning and Medication Adherence in Chinese Patients With Mechanical Heart Valve Replacement: A Moderated Mediation Model

Background: Medication adherence is crucial for patients with mechanical heart valve replacement. Although families functioning is positively associated with medication adherence, little is known about the underlying mechanisms. Objective: To test whether family functioning affects medication adherence through illness perceptions and whether this mediating effect was moderated by medication literacy. Methods: 319 patients after mechanical heart valve replacement were included in this cross-sectional study from June 2021 to October 2021. Data regarding family functioning, illness perceptions, medication adherence, and medication literacy were collected through questionnaires. The moderated mediation model was examined by Hayes's PROCESS macro, based on the bootstrapping method. Results: The results revealed illness perceptions partially mediated the association of family functioning on medication adherence [β = 0.08, 95% confidence intervals: (0.04, 0.12)], and this effect was stronger for patients with low medication literacy than those with high literacy [β = -0.36, 95% CI: (-0.50, -0.22)]. Furthermore, the relationship between family functioning and medication adherence was only significant in patients with low medication literacy [β = 0.36, 95% CI: (0.23, 0.50)]. Conclusion: The mediating effect of illness perceptions between family functioning and medication adherence was moderated by medication literacy. Efforts to improve medication adherence by targeting at improving family functioning may be more effective when considering illness perceptions, especially for patients with limited medication literacy.

Self-reported health literacy and medication adherence in older adults: a systematic review

OBJECTIVES

To give an overview over the associations between self-reported health literacy and medication adherence in older adults.

DESIGN

A systematic literature review of quantitative studies published in English and German.

DATA SOURCES

MEDLINE via PubMed, CINAHL, Cochrane Library, Epistemonikos and LIVIVO were searched.

ELIGIBILITY CRITERIA

Included studies had to examine the associations between self-reported health literacy and medication adherence in the elderly (samples including ≥66% of ≥60 years old) and had to use a quantitative methodology and had to be written in English or German.

DATA EXTRACTION AND SYNTHESIS

All studies were screened for inclusion criteria by two independent reviewers. A narrative synthesis was applied to analyse all included studies thematically. Quality assessment was conducted using the NIH Quality Assessment Tool for Observational Cohort and Cross-Sectional Studies.

RESULTS

We found 2313 studies, of which nine publications from eight studies were included in this review. Five studies reported a majority of participants with limited health literacy, one study reported a majority of participants with adequate health literacy, and three publications from two studies only reported mean levels of health literacy. Eight publications from seven studies used self-reports to measure medication adherence, while one study used the medication possession ratio. Overall, six publications from five studies reported significantly positive associations between health literacy and medication adherence while two studies reported positive but non-significant associations between both constructs and one study reported mixed results.

CONCLUSION

In this review, associations between self-reported health literacy and medication adherence are rather consistent, indicating positive associations between both constructs in older adults. However, concepts and measures of health literacy and medication adherence applied in the included studies still show a noteworthy amount of heterogeneity (eg, different use of cutoffs). These results reveal the need for more differentiated research in this area.

PROSPERO REGISTRATION NUMBER

CRD42019141028.

The Role of Health Literacy in Health Behavior, Health Service Use, Health Outcomes, and Empowerment in Pediatric Patients with Chronic Disease: A Systematic Review

About 8% of all children and adolescents worldwide are affected by chronic diseases. Managing chronic conditions requires pediatric patients to be health literate. The purpose of this review is to examine the existing evidence on the links between health literacy and its outcomes proposed by the model by Sørensen et al. in chronically ill pediatric patients. Four electronic databases (PubMed, Scopus, CINAHL, PsycINFO) were searched to identify pertinent articles published up to November 2021. The search was conducted independently by two researchers and restricted to observational studies. Of 11,137 initial results, 11 articles met eligibility criteria. Overall, 6 studies identified a significant association between health literacy and one of the considered outcomes. Regarding health behavior, none of the studies on adherence found significant associations with health literacy. The results in terms of health service use were inconclusive. Regarding health outcomes, health literacy did not affect most physiological parameters, but it significantly improved health-related quality of life. Overall, evidence remains inconclusive but suggests that health literacy is associated with self-efficacy, health-related quality of life, and health service use in pediatric patients. Further research should be undertaken to strengthen the evidence.

Self-Efficacy, Social Activity, and Spirituality in the Care of Elderly Patients with Polypharmacy in Germany-A Multicentric Cross-Sectional Study within the HoPES3 Trial

About one third of Europe’s elderly population takes ≥5 drugs. Polypharmacy increases their risk of adverse drug reactions. To ensure drug safety, innovative approaches are needed. The aim of this cross-sectional study was to explore the relationship between psychosocial factors and medication-related beliefs and behaviors. Medication lists of 297 patients were recorded according to the ATC classification. Correlations between the dependent variables, Medication Adherence (MARS) and Beliefs about Medicines (BMQ), and independent variables, General Self-Efficacy (GSE), self-efficacy for managing chronic diseases (SES6G), spiritual needs (SpNQ), patient activity (PAM), loneliness (DJG), and social networks (LSNS), were measured. Patients with higher self-efficacy (OR: 1.113; 95% CI [1.056–1.174]; p < 0.001) or self-confidence in managing their chronic condition (OR: 1.188; 95% CI [1.048–1.346]; p < 0.007) also showed higher adherence. Lonely patients (OR: 0.420; 95% CI [0.267–0.660]; p < 0.001) and those with a need for inner peace (OR: 0.613; 95% CI [0.444–0.846], p = 0.003) were more likely nonadherent. Stronger positive beliefs about medications’ usefulness weakly correlated with higher scores on the SES6G (ρ = 0.178, p = 0.003) and GSES scale (ρ = 0.121, p = 0.042), patient activity (ρ = 0.155, p = 0.010) and functioning social networks scale (ρ = 0.159, p = 0.008). A weak positive correlation was found between loneliness and the belief that drugs were harmful (ρ = 0.194, p = 0.001). Furthermore, interesting correlations were detected regarding the number of medications and overuse beliefs. Psychosocial factors, such as self-efficacy, loneliness, and spiritual needs and medication-related beliefs and behaviors seem to interrelate. Addressing these factors may improve medication management and drug safety.

Does Health Literacy Reinforce Disease Knowledge Gain? A Prospective Observational Study of Hungarian COPD Patients

We set out to measure the health literacy (HL) of COPD patients using the Short Test of Functional Health Literacy (S-TOFHLA), perception-based screening questions (BHLS), and a specific disease knowledge test (COPD-Q). Our main focus is the relationship between functional HL and patients' disease-knowledge, which contributes to the clarification of the relationship between the different kinds of HL. In two prospective observational studies, 151 COPD patients (80 males, mean age: 62 ± 9 years) completed a questionnaire containing HL measurements, psychological tests (e.g., the Self-Control and Self-Management Scale), and questions regarding subjective health status. Medical data of the patients from the MedSole system were added. The HL scores of the COPD patients were compared to a representative sample using a t-test. Furthermore, correlations of HL with demographic, psychological, and medical variables were calculated within the patient group. The relations among the different HL measurements were tested by chi-square trials. COPD patients had significantly lower HL, as measured by S-TOFHLA. Younger and higher educated patients possessed higher S-TOFHLA scores. Unlike the demographic variables, general self-management showed significant correlations with both BHLS and with COPD-Q. Out of the medical variables, objective health status was associated with BHLS and COPD-Q. Neither BHLS nor S-TOFHLA had a correlation with COPD-Q, but they correlated with each other. We found S-TOFHLA to be a better tool in the medical context. There is a clear gap between self-perceived/functional HL and the necessary disease knowledge. Rehabilitation care for patients with lower HL was more advantageous.

Predictors of Medication-Related Emergency Department Admissions Among Patients with Cardiovascular Diseases at Mbarara Regional Referral Hospital, South-Western Uganda

BACKGROUND

Medication-related emergency department admissions impose a huge and unnecessary burden on the healthcare system. We sought to determine the prevalence and predictors of medication-related emergency department admissions, among patients with cardiovascular diseases at Mbarara Regional Referral Hospital, Uganda.

METHODS

Institutional research ethics approval was secured to conduct a cross-sectional study at the Mbarara Regional Referral Hospital emergency department, between February and September, 2020. All eligible and consenting patients were enrolled in a consecutive manner after a preliminary diagnosis was made by the attending physician. Structured questionnaire interview and comprehensive medication history reviews were used to identify medication therapy problems, in collaboration with a resident physician present on duty. We used sequential categorization for medication therapy problem(s). Descriptive and logistic regression analyses were used to determine prevalence and predictors of medication-related emergency department admissions.

RESULTS

Out of the 128 patients interviewed, 105 (82%) patient admissions were associated with a medication therapy problem: ineffectiveness of drug therapy (53.3%, 56), medication non-adherence (42.9%, 45), and adverse drug reactions (3.8%, 4). Out of a total of 90 incidences of medication non-adherence, 34.4% (31/90) were due to lack of understanding of patient medication regimen, and 27.8% (25/90) due to unaffordable cost of medicines. Female gender (AOR = 4.31 [1.43, 13.03 at 95% CI]; P-value = 0.010]) and a history of tobacco use (AOR = 9.58 [1.14, 80.28 at 95% CI]; P-value = 0.037) were statistically significant predictors of medication-related emergency department admissions in adjusted analysis.

CONCLUSION

Four in five emergency department admissions were associated with medication-related causes, majorly due to ineffectiveness of drug therapy. Knowledge gap on patient medication regimens was the most prevalent cause for medication non-adherence. Female gender and previous or current tobacco use was an independent risk factor for medication-related admissions.

Difficulties in reporting purpose and dosage of prescribed medications are associated with poor cognition and depression

Knowledge on prescribed medication is important for medication adherence. We determined the presence of cognitive impairment in neurological patients who report not to know reasons and dosages of their medication. Data from 350 patients were collected: sociodemographic data, German Stendal Adherence to Medication Score (SAMS), Montreal Cognitive Assessment (MoCA), and Beck Depression Inventory-II (BDI-II). Eighty-eight (29.0%) patients did not know the reasons for taking their prescribed medication and 83 (27.4%) did not know the doses. Sixty-three (20.8%) knew neither reasons nor dosage. The latter were characterized by higher nonadherence, higher number of prescribed medication per day, lower MoCA, higher BDI, and had more often a lower education level compared with patients who knew the reasons. The MANOVA revealed a significant multivariate effect for not knowing the reasons and not knowing the dosages of medication on MoCA and BDI. Significant univariate effects for not knowing reasons were found for depressive mood, but not for cognitive performance. Significant univariate effects for not knowing dosages were found for cognitive performance, but not for depressive mood. Inaccurate medication reporting is not solely associated with cognitive problems, but also with depression, which has to be taken into account in daily practice and research.

The impact of health literacy on beliefs about medication in a Dutch medication-using population

PURPOSE

Medication beliefs are likely contingent on aspects of health literacy: knowledge, motivation, and competences to access, understand, appraise, and apply health information. An association between medication beliefs and health literacy is expected as they both influence self-management. The aim of this study was to examine the association between health literacy and the beliefs about overuse and harmful effects of medication and to examine modifying effects of age, gender, and number of medications on this association.

METHODS

The data were collected using the online "Medication panel" of the Dutch Institute for Rational Use of Medicine. A linear regression model was used to examine the association between health literacy and beliefs about medication and the modifying effects of age, gender, and number of medications on this association.

RESULTS

Respondents with a lower level of health literacy had more concerns about overuse (β adj.= -.174, p<.001) and harmful (β adj.= -.189, p<.001) effects of medication. This study found no modifying effects.

CONCLUSIONS

A lower health literacy level is associated with more concerns about the overuse and harmful effects of medication. The results of this study suggest that extra attention should be given to persons with low health literacy level by healthcare professionals, to decrease their concerns about overuse and harmful effects, and improve adherence to self-management behavior.

Understanding How Nutrition Literacy Links to Dietary Adherence in Patients Undergoing Maintenance Hemodialysis: A Theoretical Exploration Using Partial Least Squares Structural Equation Modeling

Dietary non-adherence is pervasive in the hemodialysis (HD) population. Health literacy is a plausible predictor of dietary adherence in HD patients, but its putative mechanism is scarcely studied. Thus, this study aimed to establish the causal model linking nutrition literacy to dietary adherence in the HD population. This was a multi-centre, cross-sectional study, involving 218 randomly selected multi-ethnic HD patients from nine dialysis centres in Klang Valley, Malaysia. Dietary adherence and self-management skills were assessed using validated End-Stage Renal Disease Adherence Questionnaire and Perceived Kidney/Dialysis Self-Management Scale, respectively. Validated self-developed scales were used to gauge nutrition literacy, dietary knowledge and Health Belief Model constructs. Relationships between variables were examined by multiple linear regressions and partial least squares structural equation modeling. Limited nutrition literacy was evident in 46.3% of the HD patients, associated with older age, lower education level, and shorter dialysis vintage. Dietary adherence rate was at 34.9%. Nutrition literacy (β = 0.390, p < 0.001) was an independent predictor of dietary adherence, mediated by self-efficacy (SIE = 0.186, BC 95% CI 0.110-0.280) and self-management skills (SIE = 0.192, BC 95% CI 0.103-0.304). Thus, nutrition literacy-enhancing strategies targeting self-efficacy and self-management skills should be considered to enhance dietary adherence in the HD population.

The role of functional health literacy in long-term treatment outcomes in psychosocial care for adolescents

Although among adolescents with psychosocial problems low health literacy may increase the risk of poor treatment outcomes, the contributing mechanisms within treatment remain unclear. A better understanding of these mechanisms could contribute to improved treatment processes and outcomes. This study aims to examine the relationship between functional health literacy, treatment processes (treatment adherence, learning processes), and treatment outcome (level of psychosocial problems) in adolescents in psychosocial care. We used data from a prospective cohort study among adolescents aged 12-18 (N = 390), collected in four successive measurements: at entry into care, and 3, 12, and 24 months thereafter. We used a mixed effect model to investigate the association between level of functional health literacy (adequate vs. inadequate) and treatment processes (treatment adherence, learning processes) and treatment outcome (level of psychosocial problems). Between adolescents with adequate and inadequate functional health literacy, we found no differences or change over time in adherence or learning processes. The level of psychosocial problems significantly declined over time (β = - 1.70, 95% CI [- 2.72, - 0.69], p = .001) to a similar degree in both groups, though, in all measurements, the level was consistently higher for adolescents with inadequate health literacy. We conclude that health literacy levels did not affect change in treatment processes nor in outcomes of psychosocial treatment. However, the consistently higher level of psychosocial problems among adolescents with inadequate health literacy suggests an unaddressed need in psychosocial care.

Factors associated with non-adherence to HBV antiviral therapy

BACKGROUND

HBV antiviral therapy has the potential to reduce the burden of HBV-related liver disease by suppressing HBV DNA replication to undetectable levels, reducing the progression of liver fibrosis and reducing the risk of hepatocellular carcinoma (HCC) development. Treatment outcomes and long-term benefits require adherence to medication regimens. This study aimed to identify the prevalence and factors associated with non-adherence to antiviral therapy.

METHODS

A cross-sectional survey of patients receiving HBV antiviral therapies was conducted in three Sydney hospitals. Participants were asked to complete an online questionnaire. Logistic regression was used to assess the associations between non-adherence (defined as missing more than 1 day of medication in the last 30 days) and demographic, socio-economic, disease, treatment, health-care system and individual-related factors.

RESULTS

Of the 277 participants, 66 (23.8%) were non-adherent, missing a mean 1.7 days of medication (sd 4.8) in the last 30 days. In multivariate analysis, non-adherent behaviour declined with age (odds ratio [OR] 0.9, 95% CI 0.97, 0.99; P<0.013). Participants who reported having no established routine to take their medication (OR 5.0, 95% CI 1.4, 17.4; P<0.012) and having inadequate health literacy (OR 2.7, 95% CI 1.3, 5.5; P<0.007) were more likely to be non-adherent.

CONCLUSIONS

Almost a quarter of participants in the current study were non-adherent. Adherence is potentially modifiable through person-centred education, collaborative models of patient care and interventions designed to improve health literacy and establish medication routines. Findings have the potential to improve health service delivery to patients at risk of non-adherence to HBV antiviral therapy.

Factors influencing women's decision-making regarding complementary medicine product use in pregnancy and lactation

Background

The prevalence of complementary medicine product (CMP) use by pregnant or breastfeeding Australian mothers is high, however, there is limited data on factors influencing women’s decision-making to use CMPs. This study explored and described the factors influencing women’s decisions take a CMP when pregnant or breastfeeding.

Methods

Qualitative in-depth interviews and focus group discussions were held with 25 pregnant and/or breastfeeding women who currently used CMPs. Participants’ health literacy was assessed using a validated single-item health literacy screening question and the Newest Vital Sign. Interview and focus group discussions were audio-recorded, transcribed verbatim and thematically analysed.

Results

Participants were a homogenous group. Most had higher education, medium to high incomes and high health literacy skills. They actively sought information from multiple sources and used a reiterative collation and assessment process. Their decision-making to take or not to take CMPs was informed by the need to establish the safety of the CMPs, as well as possible benefits or harms to their baby’s or their own health that could result from taking a CMP. Their specific information needs included the desire to access comprehensive, consistent, clear, easy to understand, and evidence-based information. Women preferred to access information from reputable sources, namely, their trusted health care practitioners, and information linked to government or hospital websites and published research. A lack of comprehensive, clear, consistent, or evidence-based information often led to decisions not to take a CMP, as they felt unable to adequately establish its safety or benefits. Conversely, when the participants felt the CMPs information they collected was good quality and from reputable sources, it reassured them of the safety of the CMP in pregnancy and/or breastfeeding. If this confirmed a clear benefit to their baby or themselves, they were more likely to decide to take a CMP.

Conclusions

The participants’ demographic profile confirms previous research concerning Australian women who use CMPs during pregnancy and lactation. Participants’ high health literacy skills led them to engage in a reiterative, information-seeking and analysis process fuelled by the need to find clear information before making the decision to take, or not to take, a CMP.

Electronic supplementary material

The online version of this article (10.1186/s12884-019-2396-2) contains supplementary material, which is available to authorized users.

Complementary medicine products information-seeking by pregnant and breastfeeding women in Australia

OBJECTIVE

Complementary medicine product use in pregnancy and lactation is common but little is known about women's health literacy and information-seeking regarding this. The objectives of this study were to identify and explore pregnant or breastfeeding women's sources of, and rationale for seeking complementary medicine products information, the types of information sought, and how women felt their health care practitioners can help them receive information that meets their needs.

DESIGN

A qualitative research design consisting of in-depth interviews and focus group discussions was conducted. Data were thematically analysed. Participants also completed two validated health literacy screening tools.

SETTING

Communities in regional and metropolitan settings in Sydney and Northern New South Wales, and South-East Queensland, Australia.

PARTICIPANTS

Twenty-five women (n = 7 pregnant, n = 17 breastfeeding, n = 1 both pregnant and breastfeeding) who currently used complementary medicine products participated. Eleven women were pregnant with or breastfeeding their first child; 14 had between one and four older children.

FINDINGS

Twenty-four participants had high health literacy according to the validated screening tools. Around half of the participants had used complementary medicine products for most of their lives and 17 had used complementary medicine products to resolve or manage complex health conditions in adulthood or childhood. Women sought complementary medicine products information from three main sources. 1) Practical and safety information on complementary medicine products was sought from health care practitioners and published research; 2) health care practitioners were also sources of information on reasons for complementary medicine products recommendations and physiological actions; and 3) sharing experiences of complementary medicine products use with other mothers appeared to help women understand what to expect when taking complementary medicine products, support social-emotional wellbeing and encourage participants to look after their own health. Participants strongly expressed the desire for their mainstream biomedical health care practitioners to be more informed in, and open to, complementary medicine product use in pregnancy and breastfeeding.

KEY CONCLUSIONS

Participants' high health literacy skills may have influenced them to seek comprehensive information on complementary medicine products from a variety of professional and lay sources. Their use of complementary medicine products in pregnancy and breastfeeding was a natural consequence from previous positive experiences with complementary medicine products and/or therapies.

IMPLICATIONS FOR PRACTICE

Maternity care practitioners can positively enhance their interactions with pregnant or breastfeeding women who use complementary medicine products by respectfully discussing use within the context of these women's values and health goals, and by furthering their own education in complementary medicine products' safety, efficacy and indications in pregnancy and breastfeeding.

Translation and cultural adaptation of Glasgow Antipsychotic Side-effects Scale (GASS) in Arabic

Background

In view of a constant increase in the number of patients treated with antipsychotic medications, the problem of nonadherence to the prescribed treatment becomes particularly relevant. Since one of the major contributors to the nonadherence is the presence of side effects of the drugs being used, the availability of tools for assessment of adverse reactions is of great importance.

Objective

The objective of the present work was to develop an Arabic language version of the Glasgow Antipsychotic Side-effect Scale (GASS).

Methods

After confirming the accuracy of translation, the questionnaire was given to 100 patients in two psychiatric centers in Saudi Arabia.

Results

The Cronbach’s alpha (0.793) indicated a good reliability of the survey. The mean GASS score was 19.09, indicating absent or mild side effects of antipsychotics, but 46% of patients experienced moderate, and 25% experienced severe side effects. An analysis of the correlation between patients’ characteristics and side effects revealed the presence of a positive relationship between the side effects and health literacy.

Conclusions

It is expected that the Arabic-GASS will benefit Arabic-speaking psychiatric patients by helping them to express their concerns about side effects of antipsychotics. The collected results also document the importance of patients’ health literacy in achieving high-quality healthcare.

Complementary medicine products used in pregnancy and lactation and an examination of the information sources accessed pertaining to maternal health literacy: a systematic review of qualitative studies

BACKGROUND

The prevalence of complementary medicine use in pregnancy and lactation has been increasingly noted internationally. This systematic review aimed to determine the complementary medicine products (CMPs) used in pregnancy and/or lactation for the benefit of the mother, the pregnancy, child and/or the breastfeeding process. Additionally, it aimed to explore the resources women used, and to examine the role of maternal health literacy in this process.

METHODS

Seven databases were comprehensively searched to identify studies published in peer-reviewed journals (1995-2017). Relevant data were extracted and thematic analysis undertaken to identify key themes related to the review objectives.

RESULTS

A total of 4574 articles were identified; 28 qualitative studies met the inclusion criteria. Quantitative studies were removed for a separate, concurrent review. Herbal medicines were the main CMPs identified (n = 21 papers) in the qualitative studies, with a smaller number examining vitamin and mineral supplements together with herbal medicines (n = 3), and micronutrient supplements (n = 3). Shared cultural knowledge and traditions, followed by women elders and health care professionals were the information sources most accessed by women when choosing to use CMPs. Women used CMPs for perceived physical, mental-emotional, spiritual and cultural benefits for their pregnancies, their own health, the health of their unborn or breastfeeding babies, and/or the breastfeeding process. Two over-arching motives were identified: 1) to protect themselves or their babies from adverse events; 2) to facilitate the normal physiological processes of pregnancy, birth and lactation. Decisions to use CMPs were made within the context of their own cultures, reflected in the locus of control regarding decision-making in pregnancy and lactation, and in the health literacy environment. Medical pluralism was very common and women navigated through and between different health care services and systems throughout their pregnancies and breastfeeding journeys.

CONCLUSIONS

Pregnant and breastfeeding women use herbal medicines and micronutrient supplements for a variety of perceived benefits to their babies' and their own holistic health. Women access a range of CMP-related information sources with shared cultural knowledge and women elders the most frequently accessed sources, followed by HCPs. Culture influences maternal health literacy and thus women's health care choices including CMP use.

The Effect of Psychosocial and Neuropsychiatric Factors on Medication Adherence in a Cohort of Women With Systemic Lupus Erythematosus

BACKGROUND

Medication adherence in systemic lupus erythematosus (SLE) reduces disease activity and the risk of flares.

OBJECTIVES

We evaluated adherence in women with SLE who exhibit high morbidity and mortality. We evaluated demographic data and 2 conventional adherence predictors: self-efficacy and health literacy, along with 2 potential neuropsychiatric SLE complications: cognitive dysfunction and depression.

METHODS

One hundred six women randomly selected from the Barbados National Lupus Registry completed the Self-efficacy for Appropriate Medication Use Scale, Rapid Estimate of Adult Literacy in Medicine-Short Form, Cognitive Symptom Inventory, Beck Depression Inventory II, and Morisky's Medication Adherence Questionnaire (MAQ). This study explored the effects of psychosocial and neuropsychiatric functioning on adherence using ordinal logistic regression.

RESULTS

Sixty percent reported high MAQ scores. The probability of high MAQ scores was lower among younger patients (P = 0.001) and those with shorter disease duration (P = 0.05). The probability of high MAQ scores fell with lower perceived self-efficacy (odds ratio [OR], 0.80; 95% confidence interval [CI], 0.73-0.89; P < 0.001), worsening cognitive function (OR, 0.90; 95% CI, 0.84-0.97; P = 0.004), and increasing depression (OR, 0.93; 95% CI, 0.88-0.97; P = 0.002). There was no strong relationship between MAQ score and health literacy (OR, 0.37; 95% CI, 0.13-1.03; P = 0.06).

CONCLUSION

Women with SLE who are younger and those with shorter disease duration should be assessed for medication adherence. Screening at diagnosis followed by routine assessment of cognitive dysfunction and depression along with perceived self-efficacy may further identify the most vulnerable subgroup who should be targeted with personalized intervention strategies.

Effect of a health literacy intervention trial on knowledge about cardiovascular disease medications among Indigenous peoples in Australia, Canada and New Zealand

OBJECTIVES

To assess the effect of a customised, structured cardiovascular disease (CVD) medication health literacy programme on medication knowledge among Indigenous people with, or at high risk of, CVD.

DESIGN

Intervention trial with premeasures and postmeasures at multiple time points.

SETTING

Indigenous primary care services in Australia, Canada and New Zealand.

PARTICIPANTS

171 Indigenous people aged ≥20 years of age who had at least one clinical diagnosis of a CVD event, or in Canada and Australia had a 5-year CVD risk ≥15%, and were prescribed at least two of the following CVD medication classes: statin, aspirin, ACE inhibitors and beta blockers.

INTERVENTION

An education session delivered on three occasions over 1 month by registered nurses or health educators who had received training in health literacy and principles of adult education. An interactive tablet application was used during each session and an information booklet and pill card provided to participants.

PRIMARY OUTCOME MEASURES

Knowledge about the CVD medications assessed before and after each session.

RESULTS

Knowledge at baseline (presession 1) was low, with the mean per cent correct answers highest for statins (34.0% correct answers), 29.4% for aspirin, 26.0% for beta blockers and 22.7% for ACE inhibitors. Adjusted analyses showed highly significant (P<0.001) increases in knowledge scores between preassessments and postassessments at all three time points for all medication classes. For the four medications, the absolute increases in adjusted per cent correct items from presession 1 to postsession 3 assessments were 60.1% for statins, 76.8% for aspirin, 71.4% for ACE inhibitor and 69.5% for beta blocker.

CONCLUSIONS

The intervention was highly effective in contextually diverse Indigenous primary healthcare services in Australia, Canada and New Zealand. The findings from this study have important implications for health services working with populations with low health literacy more generally.

TRIAL REGISTRATION NUMBER

ACTRN12612001309875.

The association of health literacy with illness perceptions, medication beliefs, and medication adherence among individuals with type 2 diabetes

BACKGROUND

Beliefs in medications and illness perceptions is associated with medication adherence among individuals with diabetes and several adherence interventions focus on patients' beliefs in medicines and illnesses. Though health literacy is important in medication adherence, the relationship between health literacy and medication adherence remains inconclusive; thus raising the question as to whether health literacy has an amplifying or reducing effect on the relationship between beliefs and adherence.

OBJECTIVE

The study examined (1) the association between health literacy, beliefs in medicines, illness perceptions, and medication adherence in individuals with type 2 diabetes and (2) the moderating effects of health literacy (including numeracy and document literacy) on the relationship between illness perceptions, beliefs in medicines, and medication adherence.

METHODS

Adults ≥20 years taking oral diabetes medicines at two family medicine clinics, completed a cross-sectional survey. Participants were assessed on beliefs in medicines, illness perceptions, health literacy, self-efficacy, and medication adherence. Multiple linear regressions examined the effect of health literacy, beliefs and self-efficacy, and the moderator effect of health literacy in the relationship between beliefs and adherence.

RESULTS

Of the 174 participants, more than half were women (57.5%) and white (67.8%). There was a significant positive association between self-efficacy and adherence (β = 0.486, p < .001), and a negative association between threatening illness perceptions and adherence (β = -0.292, p < .001). Health literacy had a significant moderator effect on the relationship between adherence and concerns beliefs (β = -0.156, p = .014) and threatening illness perceptions (β = 0.196, p = .002). The concern beliefs - adherence association was only significant at marginal and adequate literacy levels. When health literacy was separated into numeracy and document literacy, only numeracy moderated the illness perceptions - adherence relationship (β = 0.149, p = .038).

CONCLUSIONS

Health literacy, especially numeracy, needs to be initially addressed before diabetes adherence interventions that address individual concerns about medicines and threatening illness perceptions can work.

Text Messaging May Engage and Benefit Adults with Type 2 Diabetes Regardless of Health Literacy Status

Background:

Technology-delivered interventions have the potential to improve diabetes self-care and glycemic control among adults with type 2 diabetes (T2D). However, patients who do not engage with interventions may not reap benefits, and there is little evidence on how engagement with mobile health interventions varies by health literacy status.

Objective:

This study explored how patients with limited health literacy engaged with and experienced Rapid Education/Encouragement and Communications for Health (REACH), a text messaging intervention designed to support the self-care adherence of disadvantaged patients with T2D. We recruited adults with T2D from federally qualified health centers and used mixed methods to examine (1) associations between users' health literacy status and their prior mobile phone use and their engagement with REACH and (2) similarities and differences in users' self-reported benefits by health literacy status.

Methods:

Participants (N = 55) completed a survey, including measures of health literacy and prior mobile phone use. For 2 weeks, participants experienced REACH, which included daily text messages promoting self-care and asking about medication adherence, and weekly text messages providing medication adherence feedback. After 2 weeks, participants completed a semi-structured telephone interview about their experiences.

Key Results:

Participants with limited health literacy were less likely to have used cell phones to access the Internet (48% vs. 90%, p = .001) or email (36% vs. 87%, p < .001), but equally as likely to have used text messaging and to respond to REACH text messages (p = .12 and p = .40, respectively) compared to participants with adequate health literacy. Participants responded to 93% of text messages on average and reported benefits of the intervention, including reminders and accountability, convenience and accessibility, and information and motivation. Participants with limited health literacy described a unique benefit of receiving social support from the intervention.

Conclusions:

Text messaging interventions may engage and benefit patients with T2D, regardless of health literacy status. Text messaging may have the potential to reduce T2D health disparities related to limited health literacy. [Health Literacy Research and Practice. 2017;1(4):e192–e202.]

Plain Language Summary:

Limited health literacy is associated with less engagement with health information technology, but there is little evidence on how engagement with text messaging interventions varies by health literacy status. This intervention engaged and benefited adults with type 2 diabetes in safety-net clinics, regardless of health literacy status. Participants with limited health literacy described a unique intervention benefit of social support.

Intentional Nonadherence as a Means to Exert Control

Medication adherence is a major issue for patients with a chronic illness, who sometimes rationally choose temporary nonadherence. This study aims at better understanding intentional nonadherence and especially why it seems to fluctuate over time. It is based on 48 semi-structured interviews conducted in a hospital in the Netherlands with patients who had been prescribed a medication for a chronic disease for at least 1 year, and who had either type 2 diabetes, hypertension, Parkinson's disease, inflammatory bowel disease, or chronic myeloid leukemia. The analysis uses a simplified version of the failure modes and effects analysis (FMEA) method. Intentional nonadherence appeared to be the result of the respondents' desire (a) to exert control over the treatment and its effects on their body, and (b) to control the hold of the treatment on their daily life. This result provides a rationale for the fluctuation of intentional nonadherence behavior.

Medication understanding among patients living with multiple chronic conditions: Implications for patient-reported measures of adherence

BACKGROUND

Low health literacy is associated with poor medication adherence and poor health outcomes. Limited understanding of prescribed medications may decrease validity of patient-reported adherence measures.

OBJECTIVES

To assess knowledge of names and purposes of prescribed medications among patients with multiple chronic conditions.

METHODS

Individual interviews were conducted with a convenience sample of patients from six U.S. primary care clinics. Participants (n = 57) were English and/or Spanish-speaking patients prescribed 3+ medications for chronic conditions, for which non-adherence may lead to disability or death. In individual interviews, patients were asked to name their medications, explain the purpose of each, and to explain how they distinguish them from one another. Interviews were audio recorded, transcribed, and coded; coded content was quantified by 1) whether or not the patient could name medications; 2) method of categorizing medications; 3) whether or not the purpose of the medication was understood. Descriptive statistics were compiled using Fisher's exact test to determine the relationship between patient knowledge and medication characteristics.

RESULTS

Thirty percent of patients could not name at least one of their medications; 19% did not know their purpose; 30% held misconceptions about the purpose of one or more medications. There was no significant difference in ability to name medications or state their medication's purpose between patients using medi-sets, pre-packaged rolls, or blister packs, and patients who stored pills in their original containers (p = 0.56 and p = 0.73, respectively), or across demographic groups (p = 0.085 to 0.767).

CONCLUSIONS

Many patients demonstrated difficulty identifying the name and purpose of prescribed medications; this did not differ by demographic group or medication storage type. Patients may benefit from routine review of medications with their provider in order to improve health literacy, outcomes, and patient-reported adherence measurement.

Medication self-management skills and cognitive impairment in older adults hospitalized for heart failure: A cross-sectional study

Background:

Cognitive impairment is highly prevalent among older adults (aged ≥65 years) hospitalized for heart failure and has been associated with poor outcomes. Poor medication self-management skills have been associated with poor outcomes in this population as well. The presence and extent of an association between cognitive impairment and poor medication self-management skills in this population has not been clearly defined.

Objective:

We assessed the cognition of consecutive older adults hospitalized for heart failure, in relation to their medication self-management skills.

Methods:

We conducted a cross-sectional study of older adults (aged ≥65 years) who were hospitalized for heart failure and were being discharged home. Prior to discharge, we assessed cognition using the Mini-Cog. We also tested patients’ ability to read a pill bottle label, open a pill bottle safety cap, and allocate mock pills to a pill box. Pill allocation performance was assessed quantitatively (counts of errors of omission and commission) and qualitatively (patterns suggestive of knowledge-based mistakes, rule-based mistakes, or skill-based slips).

Results:

Of 55 participants, 22% were found to have cognitive impairment. Patients with cognitive impairment tended to be older as compared to those without cognitive impairment (mean age = 81 vs 76 years, p = NS). Patients with cognitive impairment had a higher prevalence of inability to read pill bottle label (prevalence ratio = 5.8, 95% confidence interval = 3.2–10.5, p = 0.001) and inability to open pill bottle safety cap (prevalence ratio = 3.3, 95% confidence interval = 1.3–8.4, p = 0.03). While most patients (65%) had pill-allocation errors regardless of cognition, those patients with cognitive impairment tended to have more errors of omission (mean number of errors = 48 vs 23, p = 0.006), as well as more knowledge-based mistakes (75% vs 40%, p = 0.03).

Conclusion:

There is an association between cognitive impairment and poor medication self-management skills. Medication taking failures due to poor medication self-management skills may be part of the pathway linking cognitive impairment to poor post-discharge outcomes among patients with heart failure transitioning from hospital to home.

Psychosocial factors in medication adherence and diabetes self-management: Implications for research and practice

Diabetes is a chronic illness that places a significant self-management burden on affected individuals and families. Given the importance of health behaviors-such as medication adherence, diet, physical activity, blood glucose self-monitoring-in achieving optimal glycemic control in diabetes, interventions designed and delivered by psychologists hold promise in assisting children, adolescents, and adults with diabetes in improving their health status and lowering their risk of serious complications. This article first provides an overview of diabetes self-management and associated challenges and burdens. Socioeconomic status factors that may influence diabetes management and outcomes are briefly highlighted. We then review the evidence base for select psychosocial factors that may be implicated in diabetes self-management. Modifiable targets of psychological intervention are presented across 3 overarching domains: (a) knowledge, beliefs, and related cognitive constructs; (b) emotional distress and well-being; and (c) behavioral skills and coping. Important methodological issues facing future research are discussed, along with opportunities for psychologists in improving the care and treatment outcomes of individuals and families living with diabetes. In conclusion, we advocate for continued research emphasis on improving psychosocial aspects of living with diabetes, with greater attention to the situational context in which the self-regulatory processes underlying self-management occur. Psychologists have important roles to play in reducing emotional distress, improving patient knowledge, and providing training in behavioral skills to promote successful self-management and to support patient-centered diabetes care. (PsycINFO Database Record

Intentional and Unintentional Medication Non-Adherence in Hypertension: The Role of Health Literacy, Empowerment and Medication Beliefs

Background

Medication non-adherence is a major public health issue, creating obstacles to effective treatment of hypertension. Examining the underlying factors of deliberate and non-deliberate non-adherence is crucial to address this problem. Thus, the goal of the present study is to assess the socio-demographic, clinical and psychological determinants of intentional and unintentional non-adherence.

Design and methods

A cross-sectional survey was conducted between March, 2015 and April, 2016. The sample consisted of hypertension patients holding at least one medical prescription (N=109). Measurements assessed patients’ medication adherence, health literacy, empowerment, self-efficacy, medication beliefs, and patients’ acceptance of their doctor’s advice, socio-demographic and clinical characteristics.

Results

Patients who occasionally engaged in either intentional or unintentional non-adherence reported to have lower adherence selfefficacy, higher medication concern beliefs, lower meaningfulness scores and were less likely to accept the doctor’s treatment recommendations. Patients who occasionally engaged in unintentional nonadherence were younger and had experienced more side effects compared to completely adherent patients. Adherence self-efficacy was a mediator of the effect of health literacy on patients’ medication adherence and acceptance of the doctor’s advice was a covariate.

Conclusions

Regarding the research implications, health literacy and adherence self-efficacy should be assessed simultaneously when investigating the factors of non-adherence. Regarding the practical implications, adherence could be increased if physicians i) doublecheck whether their patients accept the treatment advice given and ii) if they address patients’ concerns about medications. These steps could be especially important for patients characterized with lower self-efficacy, as they are more likely to engage in occasional nonadherence.

Adherence in dermatology

Non-adherence to treatment and medical recommendations is one of the leading causes of treatment failure, poor clinical outcomes, and increased healthcare utilization. Although non-adherence is observed across all medical specialties, adherence to treatment in dermatology deserves special attention given the multiple different routes of treatment. Adherence can be measured using subjective methods (patient reporting and questionnaires) or objective methods (pill counts, electronic chips, and pharmacy records). Adherence to dermatologic treatments varies based on the specific condition but is poor for systemic therapies and even worse with topical agents. Among the factors that influence adherence, duration of treatment, complexity of regimen, and access play a large role. Interventions to improve adherence can range from simplifying treatment regimens to scheduling more frequent office visits. Due to the profound effect on cost, healthcare outcomes, and mortality, understanding and improving adherence is equally as important as making the correct diagnosis and prescribing the correct treatment.

Association Between Parental HPV Knowledge and Intentions to Have Their Daughters Vaccinated

Human papillomavirus (HPV) 16 and 18 causes 66% of cervical cancers (Dunne et al., 2014). Vaccination during adolescence can prevent HPV-associated cervical cancers, yet less than half of adolescent girls are vaccinated. This study examined the association between HPV knowledge and parental intentions to vaccinate daughters against HPV. A retrospective, cross-sectional, national data set from the 2006-2007 Health Information National Trends Survey (HINTS) was used. A multivariate multinomial logistic regression analysis was used to estimate the association between intent to vaccinate and HPV knowledge. After controlling for other covariates, parents who were knowledgeable were more likely to intend to have their daughters vaccinated compared with those who were not knowledgeable (adjusted relative risk ratio [aRRR] = 3.96, p = .004). Having HPV knowledge would significantly increase parents' intent for vaccination against the disease for their daughters. Health care providers should integrate HPV-related education for parents within their services, and policymakers should consider requiring HPV vaccination for school attendance.

The association of health literacy with adherence in older adults, and its role in interventions: a systematic meta-review

Background

Low health literacy is a common problem among older adults. It is often suggested to be associated with poor adherence. This suggested association implies a need for effective adherence interventions in low health literate people. However, previous reviews show mixed results on the association between low health literacy and poor adherence. A systematic meta-review of systematic reviews was conducted to study the association between health literacy and adherence in adults above the age of 50. Evidence for the effectiveness of adherence interventions among adults in this age group with low health literacy was also explored.

Methods

Eight electronic databases (MEDLINE, ERIC, EMBASE, PsycINFO, CINAHL, DARE, the Cochrane Library, and Web of Knowledge) were searched using a variety of keywords regarding health literacy and adherence. Additionally, references of identified articles were checked. Systematic reviews were included if they assessed the association between health literacy and adherence or evaluated the effectiveness of interventions to improve adherence in older adults with low health literacy. The AMSTAR tool was used to assess the quality of the included reviews. The selection procedure, data-extraction, and quality assessment were performed by two independent reviewers. Seventeen reviews were selected for inclusion.

Results

Reviews varied widely in quality. Both reviews of high and low quality found only weak or mixed associations between health literacy and adherence among older adults. Reviews report on seven studies that assess the effectiveness of adherence interventions among low health literate older adults. The results suggest that some adherence interventions are effective for this group. The interventions described in the reviews focused mainly on education and on lowering the health literacy demands of adherence instructions. No conclusions could be drawn about which type of intervention could be most beneficial for this population.

Conclusions

Evidence on the association between health literacy and adherence in older adults is relatively weak. Adherence interventions are potentially effective for the vulnerable population of older adults with low levels of health literacy, but the evidence on this topic is limited. Further research is needed on the association between health literacy and general health behavior, and on the effectiveness of interventions.

Electronic supplementary material

The online version of this article (doi:10.1186/s12889-015-2251-y) contains supplementary material, which is available to authorized users.

Low health literacy associated with higher medication costs in patients with type 2 diabetes mellitus: Evidence from matched survey and health insurance data

OBJECTIVE

Studies have shown that people with lower levels of health literacy create higher emergency, inpatient and total healthcare costs, yet little is known about how health literacy may affect medication costs. This cross-sectional study aims at investigating the relationship between health literacy and three years of medication costs (2009-2011) in a sample of patients with type 2 diabetes.

METHODS

391 patients from the German-speaking part of Switzerland who were insured with the same health insurer were interviewed. Health literacy was measured by a validated screening question and interview records were subsequently matched with data on medication costs. A bootstrap regression analysis was applied to investigate the relationship between health literacy and medication costs.

RESULTS

In 2010 and 2011 lower levels of health literacy were significantly associated with higher medication costs (p<.05).

CONCLUSION

The results suggest that diabetic patients with lower health literacy will create higher medication costs.

PRACTICE IMPLICATIONS

Besides being sensitive towards patients' health literacy levels, healthcare providers may have to take into account its potential impact on patients' medication regimen, misuse and healthcare costs.

Cultural relevance in medication adherence interventions with underrepresented adults: systematic review and meta-analysis of outcomes

OBJECTIVE

This meta-analysis systematically compiles intervention research designed to increase medication adherence among underrepresented adults.

METHOD

Comprehensive searching located published and unpublished studies with medication adherence behavior outcomes. Studies were included if samples were adults living in North America who had any of the following backgrounds or identities: African American, Native American, Latino, Latino American, Asian, Asian American, Pacific Islander, Native Alaskan, or Native Hawaiian. Random-effect analyses synthesized data to calculate effect sizes as a standardized mean difference and variability measures. Exploratory moderator analyses examined the association between specific efforts to increase the cultural relevance of medication adherence studies and behavior outcomes.

RESULTS

Data were synthesized across 5559 subjects in 55 eligible samples. Interventions significantly improved medication adherence behavior of treatment subjects compared to control subjects (standardized mean difference=0.211). Primary studies infrequently reported strategies to enhance cultural relevance. Exploratory moderator analyses found no evidence that associated cultural relevance strategies with better medication adherence outcomes.

CONCLUSION

The modest magnitude of improvements in medication adherence behavior documents the need for further research with clear testing of cultural relevance features.