The Instruments Used to Assess Health Literacy and Pharmacotherapy Literacy of Diabetes Mellitus Type 2 Patients: A Scoping Review

Development and Validation of the Jordanian Diabetic Health Literacy Questionnaire: Enhancing Diabetes Management in Arabic-Speaking Populations

(1) Background: Amidst the global rise in type 2 diabetes mellitus (T2DM), effective management of the disease has become increasingly important. Health literacy, particularly in non-English speaking populations, plays a crucial role in this management. To address the lack of suitable tools for Arabic-speaking diabetic patients, this study developed and validated the Jordanian Diabetic Health Literacy Questionnaire (JDHLQ). (2) Methods: A sample of 400 diabetic patients from Jordan, with a balance in gender, age, and educational background, was recruited from an endocrinology outpatient clinic. The JDHLQ, consisting of informative and communicative sections, underwent rigorous validation. Utilizing principal component analysis and Rasch analysis, the JDHL's reliability and validity were evaluated. (3) Results: The results showed moderate proficiency in understanding and communicating diabetes-related information and confirmed the reliability and validity of the JDHLQ. (4) Conclusions: These findings emphasize the importance of culturally appropriate health literacy tools in enhancing patient understanding, engagement, and overall management of T2DM in Arabic-speaking communities.

Comprehension of US Pharmacopeia and South African pictograms by sub-Saharan migrants who newly arrived in Europe

BACKGROUND

Patient understanding of health information is crucial for successful pharmaceutical care. Pharmaceutical pictograms enable communication of medication instructions to patients who may not share a common language or are illiterate. However, cultural factors can impact the accurate interpretation of these visual aids.

OBJECTIVES

This study aimed to assess and compare the comprehensibility of two sets of pictograms from different cultural backgrounds among sub-Saharan migrants recently arrived in Europe.

METHODS

In June 2022, a cross-sectional survey was conducted at the Migrant Temporary Stay Center in Melilla, Spain. Participants were randomly assigned to interpret 10 pictograms from either the U.S. Pharmacopeia or South African counterparts, with a minimum of 50 participants per group. Following the International Organization for Standardization's testing comprehensibility criterion, pictograms achieving a 66.7% correct interpretation rate were considered acceptable. Health literacy was measured using a culturally validated sub-Saharan version of the European Health Literacy Survey Questionnaire (HLS-EU-Q16). Data analysis included Fisher's exact test or chi-square test (for qualitative variables) and the Mann-Whitney test (for quantitative variables).

RESULTS

A total of 106 participants were included (51 in the U.S. pharmacopeia group and 55 in the South African group). None of the assessed pictograms met the comprehensibility criterion, and both groups exhibited high nonresponse rates. The South African pictograms were better understood than the American ones for all intended messages, with a statistically significant difference in overall comprehension (p = 0.002). Additionally, the participants' country of birth was a statistically significant factor for comprehension (p = 0.019).

CONCLUSIONS

Our findings indicate that evaluated pharmaceutical pictograms cannot be validly used in newly arrived sub-Saharan immigrants in Europe. However, the significantly better comprehension of South African pictograms compared to North American ones highlights the importance of cultural alignment between pictograms and their prospective users for effective comprehensibility.

Comprehensibility of South African pictograms by sub-Saharan African prospective-users

OBJECTIVES

This work aimed to explore the validity of South African pictograms to be comprehended by sub-Saharan migrant populations in Spain.

METHODS

A quantitative cross-sectional study was carried out. A voluntary survey was conducted among a population ≥ 18 years of age in a Temporary Stay Centre for Immigrants located in Spain, in June 2022. The form included a culturally and linguistically validated version of the Health Literacy questionnaire (HLS-EU-Q16), a brief questionnaire of sociodemographic variables and 10 South African pictograms selected to assess the comprehension. According to the International Organization for Standardization, a pictogram must receive 66.70% correct answers to be acceptable. Mann-Whitney U or Kruskal-Wallis tests were used to assess differences between group variables. Statistical significance was set at P < 0.05.

RESULTS

55 sub-Saharan migrants who newly arrived in Europe voluntarily agreed to participate. None of the pictograms evaluated met the validity criterion. For the selected pictograms, the range of correct answers was between 52.50% and 20.00%. Neither sociodemographic variables nor Health Literacy level were significantly associated with pictogram comprehensibility.

CONCLUSION

New culturally sensitive pictograms that are easily comprehended by sub-Saharan African population are needed.

PRACTICE IMPLICATIONS

These results may serve as a starting point for future studies that aim to create and evaluate new pictograms or create new culturally adapted versions of existing pictograms involving the target population.

Predictors of Inadequate Health Literacy among Patients with Type 2 Diabetes Mellitus: Assessment with Different Self-Reported Instruments

INTRODUCTION

Obtaining, understanding, interpreting, and acting on health information enables people with diabetes to engage and make health decisions in various contexts. Hence, inadequate health literacy (HL) could pose a problem in making self-care decisions and in self-management for diabetes. By applying multidimensional instruments to assess HL, it is possible to differentiate domains of functional, communicative, and critical HL.

OBJECTIVES

Primarily, this study aimed to measure the prevalence of inadequate HL among type 2 diabetes mellitus patients and to analyze the predictors influencing health literacy levels. Secondly, we analyzed if different self-reported measures, unidimensional instruments (Brief Health Literacy instruments (BRIEF-4 and abbreviated version BRIEF-3), and multidimensional instruments (Functional, Communicative and Critical health literacy instrument (FCCHL)) have the same findings.

METHODS

The cross-sectional study was conducted within one primary care institution in Serbia between March and September 2021. Data were collected through Serbian versions of BRIEF-4, BRIEF-3, and FCCHL-SR12. A chi-square test, Fisher's exact test, and simple logistic regression were used to measure the association between the associated factors and health literacy level. Multivariate analyses were performed with significant predictors from univariate analyses.

RESULTS

Overall, 350 patients participated in the study. They were primarily males (55.4%) and had a mean age of 61.5 years (SD = 10.5), ranging from 31 to 82 years. The prevalence of inadequate HL was estimated to be 42.2% (FCCHL-SR12), 36.9% (BRIEF-3) and 33.8% (BRIEF-4). There are variations in the assessment of marginal and adequate HL by different instruments. The highest association was shown between BRIEF-3 and total FCCHL-SR12 score (0.204, p < 0.01). The total FCCHL-SR12 score correlates better with the abbreviated BRIEF instrument (BRIEF-3) than with BRIEF-4 (0.190, p < 0.01). All instruments indicated the highest levels for the communicative HL domain and the lowest for the functional HL domain with significant difference in functional HL between the functional HL of FCCHL-SR12 and both BRIEF-3 and BRIEF-4 (p = 0.006 and 0.008, respectively). Depending on applied instruments, we identified several variables (sociodemographic, access to health-related information, empowerment-related indicators, type of therapy, and frequency of drug administration) that could significantly predict inadequate HL. Probability of inadequate HL increased with older age, fewer children, lower education level, and higher consumption of alcohol. Only high education was associated with a lower probability of inadequate HL for all three instruments.

CONCLUSIONS

The results we obtained indicate that patients in our study may have been more functionally illiterate, but differences between functional level could be observed if assessed by unidimensional and multidimensional instruments. The proportion of patients with inadequate HL is approximately similar as assessed by all three instruments. According to the association between HL and educational level in DMT2 patients we should investigate methods of further improvement.

Cross-Cultural Adaptation and Validation of the Functional, Communicative and Critical Health Literacy Instrument (FCCHL-SR) for Diabetic Patients in Serbia

Thoroughly validated instruments can provide a more accurate and reliable picture of how the instrument works and of the level of health literacy in people with type 2 diabetes mellitus (T2DM). The present work aimed at cross-cultural adaptation and validation of the Functional, Communicative and Critical Health Literacy Instrument (FCCHL) in patients with T2DM in Serbia. After translation and back-translation, views from an expert group, one cognitive interview study (n = 10) and one survey study (n = 130) were conducted among samples of diabetic patients. Item analysis, internal consistency, content validity, confirmatory factor analysis (CFA) and reliability testing were performed. When all 14 items were analyzed, loading factors were above 0.55, but without adequate model fit. After removing two items with the lowest loadings FHL1 and IHL2 the fit indexes indicated a reasonable normed χ² (SB scaled χ²/df = 1.90). CFI was 0.916 with SRMR = 0.0676 and RMSEA = 0.0831. To determine internal consistency, Cronbach’s alpha coefficient was 0.796 for the whole FCCHL-SR12. With only minor modifications compared to the English version, the 12-item FCCHL instrument is valid and reliable and can be used to measure health literacy among Serbian diabetic patients. However, future research on a larger population in Serbia is necessary for measuring the levels of HL and their relationship with other determinants in this country.