Muhammad Darwish Asyraf Mohd Isa.1, Suzana Shahar.2, Hazreen Abdul Majid.1
1 University of Malaya
2The National University of Malaysia
Health literacy is defined as the ability to access, understand, appraise and apply health-related information across healthcare, disease prevention, and health promotion and has been acknowledged as one of the most critical social determinants of health. This systematic review aims to understand the relationship between health literacy with blood pressure and dietary salt intake among adults.
A web-based search of Pubmed, Web of Science, CINAHL, ProQuest, Scopus, Cochrane Library, and Prospero was performed using specified search/MESH terms and keywords. Databases search was supplemented with internet searches (e.g. Google Scholar) and manual search. Articles limited to English and Mandarin published from January 2010 until March 2021 were identified, screened, and retrieved. Two authors will independently perform the data extraction and analysis, cross-checked, and any discrepancies will be reviewed and resolved by the third author. Observational studies were assessed by using the Newcastle-Ottawa quality assessment scale while Cochrane’s Collaboration Tool was used to assess intervention studies. Quality scores were rated as “Good”, “Fair” or “Poor” quality. PROSPERO registration no. CRD42021243596
Results & Discussion
24 papers out of a total of 1960 were found to meet the inclusion criteria and were included in the final report. The quality scores for the articles were graded as Good: 21 articles; Fair; 2 articles; Poor; 1 article. Most of the studies were done among hypertensive patients. The relationship between health literacy with blood pressure and dietary salt intake has yielded mixed and inconsistent findings.
There were no robust and clear associations between health literacy with blood pressure and dietary salt intake among adults, according to the current findings. In addition, there is very limited evidence to suggest the association between health literacy and dietary salt intake. Further research will build on previous findings to better understand the relationship.