Purpose Inadequate literacy is common among patients with diabetes and may lead to adverse outcomes. We reviewed the relationship between literacy and health outcomes in patients with diabetes and potential interventions to improve such outcomes. Methods We reviewed 79 articles covering three key domains: 1) evaluation of screening tools to identify inadequate literacy and numeracy; 2) the relationships of a range of diabetes-related health outcomes with literacy and numeracy; and 3) interventions to reduce literacy-related differences in health outcomes. Results Several screening tools are available to assess patients' print literacy and numeracy skills, some of which specifically address diabetes. Literacy and numeracy are consistently associated with diabetes-related knowledge. Some studies suggest literacy and numeracy are associated with intermediate outcomes, including self-efficacy, communication, and self-care (including adherence), but the relationship between literacy and glycemic control is mixed. Few studies have assessed more distal health outcomes, including diabetes-related complications, health care utilization, safety, or quality of life, but available studies suggest low literacy may be associated with an increased risk of complications, including hypoglycemia. Several interventions appear effective in improving diabetes-related outcomes regardless of literacy status, but it is unclear if these interventions can reduce literacy-related differences in outcomes. Conclusions Low literacy is associated with less diabetes-related knowledge and may be related to other important health outcomes. Further studies are needed to better elucidate pathways by which literacy skills affect health outcomes. Promising interventions are available to improve diabetes outcomes for patients with low literacy, but more research is needed to determine their effectiveness outside of research settings.

Fragile X-associated tremor/ataxia syndrome (FXTAS) develops in a subset of fragile X premutation carriers and involves gait ataxia, action tremor, Parkinsonism, peripheral neuropathy, autonomic disorders, and cognitive impairment. The study was designed to define the nature of cognitive deficits affecting male premutation carriers with and without FXTAS. A sample of 109 men underwent motor, cognitive, genetic, and neurologic testing, as well as brain magnetic resonance imaging. Subjects were classified into 3 groups: (a) asymptomatic premutation carriers, (b) premutation carriers with FXTAS, and (c) normal controls. Men with FXTAS performed worse than controls on mental status, intelligence, executive cognitive functioning (ECF), working memory, remote recall of information, declarative learning and memory, information processing speed, and temporal sequencing, as well as 1 measure of visuospatial functioning. Language and verbal comprehension were spared. Asymptomatic carriers performed worse than controls on ECF and declarative learning and memory. This comprehensive examination of cognitive impairment in male premutation carriers suggests that FXTAS involves substantial executive impairment and diffuse deficits in other cognitive functions. Longitudinal research currently underway will provide insight into the progression of the disorder.

Patient materials are often written above the reading level of most adults. Tool 11 of the Health Literacy Universal Precautions Toolkit ("Design Easy-to-Read Material") provides guidance on ensuring that written patient materials are easy to understand. As part of a pragmatic demonstration of the Toolkit, we examined how four primary care practices implemented Tool 11 and whether written materials improved as a result. We conducted interviews to learn about practices' implementation activities and assessed the readability, understandability, and actionability of patient education materials collected during pre-and postimplementation site visits. Interview data indicated that practices followed many action steps recommended in Tool 11, including training staff, assessing readability, and developing or revising materials, typically focusing on brief documents such as patient letters and information sheets. Many of the revised and newly developed documents had reading levels appropriate for most patients and-in the case of revised documents-better readability than the original materials. In contrast, the readability, understandability, and actionability of lengthier patient education materials were poor and did not improve over the 6-month implementation period. Findings guided revisions to Tool 11 and highlighted the importance of engaging multiple stakeholders in improving the quality of patient materials.Address correspondence to Angela G. Brega, Department of Community and Behavioral Health, Colorado School of Public Health, 13055 East 17th Avenue, Mail Stop F800, Aurora, CO 80045, USA. angela.brega@ucdenver.edu. HHS Public AccessAuthor manuscript J Health Commun. Author manuscript; available in PMC 2016 October 28. Author Manuscript Author ManuscriptAuthor Manuscript Author ManuscriptHealth literacy plays a critical role in comprehension of written health-related materials. And yet numerous studies show that the reading level of patient materials often exceeds the reading skills of many adults. It is estimated that the average U.S. adult can comprehend text written at the eighthto ninth-grade level (Doak, Doak, & Root, 1996; Institute of Medicine Committee on Health Literacy, 2004; National Work Group on Literacy and Health, 1998), although literacy skills are substantially lower among older and low-income adults (Doak et al., 1996;Kutner, Greenberg, Jin, & Paulsen, 2006;Weiss et al., 1994). In contrast, patient materials are often written at or above the 10th-grade level (Aliu & Chung, 2010;Helitzer, Hollis, Cotner, & Oestreicher, 2009;Kaphingst, Zanfini, & Emmons, 2006;Vallance, Taylor, & Lavallee, 2008;Wallace, Turner, Ballard, Keenum, & Weiss, 2005). These high reading levels, in addition to other features that can make documents difficult to understand (e.g., the use of medical terms), render many patient materials unusable for millions of Americans.The Agency for Healthcare Research and Quality developed the Health Literacy Universal Precautions Toolkit to support primary care practices in thei...

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Fragile X-associated tremor/ataxia syndrome (FXTAS) is a neurodegenerative disorder associated with a premutation trinucleotide repeat expansion in the fragile X mental retardation 1 gene (FMR1). Symptoms include gait ataxia, action tremor, and cognitive impairment. The objectives of the study were to clarify the nature of the dysexecutive syndrome observed in FXTAS and to assess the contribution of executive impairment to deficits in nonexecutive cognitive functions. Compared to controls, men with FXTAS demonstrated significant executive impairment, which was found to mediate group differences in most other cognitive abilities. Asymptomatic premutation carriers performed similarly to controls on all but two measures of executive functioning. These findings suggest that the impairment of non-executive cognitive skills in FXTAS is in large part secondary to executive dysfunction.

The fragile X-associated tremor/ataxia syndrome (FXTAS) is a recently identified phenotype associated with trinucleotide repeat expansions in the premutation range of the fragile X mental retardation 1 (FMR1) gene. In addition to progressive gait ataxia, action tremor, peripheral neuropathy, and parkinsonism, FXTAS involves impaired cognition. Our preliminary research suggests that executive cognitive functioning (ECF) is especially affected. In this study, a brief neuropsychological exam was administered to 33 men with FXTAS and 27 healthy controls. Compared with controls, individuals with FXTAS showed statistically significant impairments on measures from the Wechsler Adult Intelligence Scale, third edition (WAIS-III; verbal IQ, performance [nonverbal] IQ, verbal comprehension, perceptual organization, and processing speed). FXTAS subjects scored significantly lower on three of four measures of ECF and on two tests of information processing speed. The results provide evidence that FXTAS involves impairment of general intellectual functioning, with marked impairment of executive cognitive abilities. The pattern of cognitive performance is somewhat similar to that observed in the frontal variant of frontotemporal dementia and several of the spinocerebellar ataxias, but differs from the deficits observed in dementia of the Alzheimer type.

The findings of this study suggest that motivational interviewing focusing on parental behaviors may not be as effective as previously hoped for slowing the development of childhood caries in some high-risk groups. Furthermore, social factors may be even more salient determinants of oral health than what we previously supposed, perhaps interfering with the capacity to benefit from behavioral strategies that have been useful elsewhere. The improvement of children's oral health in high-risk populations characterized by poverty and multiple related life stresses may require more holistic approaches that address these formidable barriers.

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