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1.

Background

The Special Supplemental Nutrition Program for Women, Infants and Children (WIC) provides supplemental foods to assist participants in meeting their dietary needs. Few studies have described the extent to which WIC-eligible foods contribute to the overall diet of children who were enrolled in WIC prenatally or in early infancy.

Objective

Our aims were to examine commonly consumed foods and estimate the proportion of dietary intake contributed by WIC-eligible foods among 13- and 24-month-old children, and to assess differences by WIC participation status at 24-months.

Design

This was a national observational study.

Participants/setting

Children participating in the WIC Infant and Toddler Feeding Practices Study-2 were included (13 months old [n=2,777] and 24 months old [n=2,450]) from 2013 to 2016.

Main outcome measures

Dietary intakes were assessed using 24-hour dietary recalls at 13 and 24 months. The 10 most commonly consumed foods were described using the What We Eat in America food category classification system. WIC-eligible foods were defined as meeting the WIC nutrient criteria set forth in the Federal regulation.

Statistical analyses performed

The estimated proportion (mean±standard error) of WIC-eligible foods to total daily intake was calculated for energy, macronutrients, and select micronutrients. Multiple linear regression, adjusted for confounders, was conducted to compare the estimated proportion of nutrient intake from WIC-eligible foods by WIC participation at 24 months.

Results

At 13 and 24 months, most (60% and 63%, respectively) of the commonly consumed foods were eligible for purchase as part of the child WIC food package. WIC-eligible foods provided >40% of calories and close to 50% or more of other nutrients, and the contribution of WIC-eligible foods to overall micronutrient intake increased between 13 and 24 months. Children still on WIC at 24 months obtained a larger proportion of calories and most other nutrients from WIC-eligible foods than children no longer on WIC.

Conclusions

WIC-eligible foods could contribute to the overall diet of toddlers who were enrolled in WIC prenatally or in early infancy. Further, there may be additional nutritional benefits of staying on the program through 24 months.  相似文献   

2.

Purpose

This article aims to (1) evaluate whether bullying typology predicts violent injury; (2) longitudinally examine whether violent injury trajectories differ across bullying typology as children age; and (3) longitudinally determine whether children who consistently reported perpetration or victimization (i.e., reported bullying at fifth, seventh, and 10th grade) were different from children who inconsistently reported perpetration or victimization.

Methods

Longitudinal data were obtained from 4,297 children at three waves (fifth, seventh, and 10th grade) in three United States communities. Children were categorized into four mutually exclusive bullying typologies: neither victim nor perpetrator; victim only; perpetrator only; victim-perpetrator. Children self-reported mechanisms of violent injuries that needed medical attention in the past year. Regression models were used to evaluate the relationship between bullying group and the likelihood of violent injury over time.

Results

Seventeen percent (n=857) of children in fifth grade reported a violent injury. Prevalence of overall violent injuries, and specifically firearm and knife injuries, increased over time. Children who reported perpetration in the absence of victimization were at increased odds for violent injury (adjusted odds ratio = 1.41, 95% confidence interval: 1.24, 1.60) compared with children who reported neither victimization nor perpetration, while children who reported victimization in the absence of perpetration were at decreased odds (adjusted odds ratio=.84, 95% confidence interval: .73, .97). A significant linear dose-response relationship was observed between duration of bullying perpetration and violent injury.

Conclusions

The relationship between bullying perpetration and violent injury over time was strong. Future research should investigate potential mediating behaviors, such as weapon access, which might explain the observed relationship.  相似文献   

3.

Background

The Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) program is an important intervention for prevention and treatment of obesity and food insecurity, but participation has dropped among eligible populations from 2009 to 2015. Program satisfaction is integral to participant retention, and the retail experience is a vital component of program satisfaction.

Objective

This article applies behavioral economics principles to explore the retail experience of WIC participants and ways in which it may be improved.

Design

The authors designed and conducted semistructured interviews and focus groups with WIC participants.

Participants/setting

A convenience sample of WIC participants aged 18 years and older were recruited through WIC clinics in Texas, North Carolina, Oregon, and Illinois (n=55, 27 participants from four focus groups and 28 individual interviews).

Statistical analysis conducted

Responses were analyzed qualitatively using principles of content analysis.

Results

Challenges in identifying WIC-allowable items throughout the store as well as perceived stigmatization during the checkout process were the chief complaints. Study participants described a learning curve in successful use of WIC in retail environments over time. Study participants also reported acceptance of restrictions, such as a requirement to purchase the least expensive brand.

Conclusions

Dissatisfaction with the retail experience may lead to the underutilization of WIC benefits or program exit. Behavioral economics strategies that facilitate a better shopping experience, such as creating a section for WIC items in the store or improving in-store education, may improve the retail experience for WIC customers. Further research is needed to ensure such strategies are effective and do not contribute to stigma.  相似文献   

4.

Background

Evidence from epidemiologic studies has been inconsistent regarding the role of vitamin E in cancer incidence risk.

Objective

The aim of this study was to evaluate the prospective association between baseline plasma vitamin E levels and subsequent cancer risk in Chinese adults with hypertension, and to identify effect modifiers.

Design

A nested, case–control study was conducted from 20,702 hypertensive participants in the China Stroke Primary Prevention Trial, a randomized, double-blind, controlled trial, conducted from May 2008 to August 2013.

Participants

The current study included 229 new cancer cases and 229 controls matched for age (±1 year), sex, treatment group, and study site.

Main outcome measures

Plasma vitamin E was measured by liquid chromatography with tandem quadrupole mass spectrometers and plasma selenium was measured by inductively coupled plasma mass spectrometry using Thermo Fisher iCAP Q ICP-MS.

Statistical analyses

Odds ratios (OR) of cancer in relation to plasma concentrations of vitamin E were calculated using conditional logistic regression models.

Results

Median follow-up duration was 4.5 years. Overall, vitamin E was not associated with subsequent risk of total cancer (per 1-mg/L [2.3 μmol/L] increase: OR 1.01, 95% CI 0.93 to 1.09) and non-gastrointestinal cancer (OR 1.10, 95% CI 0.98 to 1.24). However, there was a significant, inverse association between vitamin E and gastrointestinal cancer (OR 0.86, 95% CI 0.75 to 0.99), particularly esophageal cancer (OR 0.67, 95% CI 0.48 to 0.95). Moreover, high vitamin E decreased the risk of total cancer (OR 0.91, 95% CI 0.84 to 0.99) and gastrointestinal cancer (OR 0.83, 95% CI 0.73 to 0.95) among patients with high selenium levels (median≥83.7 μg/L [1.1 μmol/L]), and increased the risk of total cancer (OR 1.13, 95% CI 1.00 to 1.26) and non-gastrointestinal cancer (OR 1.25, 95% CI 1.03 to 1.50) among those with low selenium levels (<83.7 μg/L [1.1 μmol/L]).

Conclusions

This study suggests that higher levels of plasma vitamin E are associated with reduced risk of gastrointestinal cancer. High vitamin E decreased the risk of total cancer among patients with high selenium levels, but increased the risk of total cancer among those with low selenium levels.  相似文献   

5.

Objectives

Deprescribing is effective in addressing concerns relating to polypharmacy in residents of nursing homes. However, the clinical outcomes of deprescribing interventions among residents in nursing homes are not well understood. We evaluated the impact of deprescribing interventions by health care professionals on clinical outcomes among the older residents in nursing homes.

Design

Systematic review and meta-analysis of randomized controlled trials. CINAHL, International Pharmaceutical Abstracts, MEDLINE, EMBASE, and Cochrane Library were searched from inception until September 2017; manual searches of reference lists of systematic reviews identified in the electronic search; and online trial registries for unpublished, ongoing, or planned trials. (PROSPERO CRD42016050028).

Setting and Participants

Randomized controlled trials in a nursing home setting that included participants of at least 60 years of age.

Measures

Falls, all-cause mortality, hospitalization, and potentially inappropriate medication were assessed in the meta-analysis.

Results

A total of 41 randomized clinical studies (18,408 residents) that examined deprescribing (defined as either medication discontinuation, substitution, or reduction) in nursing were identified. Deprescribing interventions significantly reduced the number of residents with potentially inappropriate medications by 59% (odds ratio [OR] 0.41, 95% confidence interval [CI] 0.19–0.89). In subgroup analysis, medication review–directed deprescribing interventions reduced all-cause mortality by 26% (OR 0.74, 95% CI 0.65–0.84), as well as the number of fallers by 24% (OR 0.76, 95% CI 0.62–0.93).

Conclusions

Compared to other deprescribing interventions, medication review–directed deprescribing had significant benefits on older residents in nursing homes. Further research is required to elicit other clinical benefits of medication review–directed deprescribing practice.  相似文献   

6.

Objectives

To understand how a heart failure diagnosis and admission health instability predict health transitions and outcomes among newly admitted nursing home residents.

Design

Retrospective cohort study of linked administrative data, including the Continuing Care Report System MDS 2.0 for nursing homes, the Discharge Abstract Database for hospitalized patients, and National Ambulatory Care Reporting System to track emergency department visits.

Setting and participants

Older adults, aged 65 years and above, admitted to nursing homes in Ontario, Alberta, and British Columbia, Canada, from 2010 to 2016.

Measures

Mortality and hospitalization were plotted over 1 year. Multistate Markov models were used to estimate adjusted odds ratios (ORs) for transitions to different states of health in stability, hospitalization, and death, stratified by heart failure diagnosis and by interRAI Changes in Health and End-stage disease Signs and Symptoms (CHESS) score, at 90 days following admission to a nursing home.

Results

The final sample included 143,067 residents. Adverse events were most common in the first 90 days. A diagnosis of heart failure predicted worsening health instability, hospitalizations, and mortality. The effect of heart failure on hospitalizations and death was strongest for low baseline health instability (CHESS = 0; OR 1.63, 95% confidence interval (CI) 1.58-1.68, and OR 1.71, 95% CI 1.57-1.86, respectively), versus moderate instability (CHESS = 1-2; OR 1.36, 95% CI 1.32-1.39, and OR 1.48, 95% CI 1.41-1.55), versus high instability (CHESS = 3; OR 1.12, 95% CI 1.03-1.23, and OR 1.21, 95% CI 1.11-1.32). The magnitude of the impact of a heart failure diagnosis was greatest for lower baseline health instability. Residents with the highest degree of health instability were also most likely to die in hospital.

Conclusions and implications

A diagnosis of heart failure and health instability provide complementary information to predict transfers, deaths, and adverse outcomes. Clearly identifying these at-risk patients may be useful in targeting interventions in nursing homes.  相似文献   

7.

Objectives

Trends over time in the United States show success in rebalancing long-term services and supports (LTSS) toward increased home- and community-based services (HCBS) relative to institutionalized care. However, the diffusion and utilization of HCBS may be inequitable across rural and urban residents. We sought to identify potential disparities in rural HCBS access and utilization, and to elucidate factors associated with these disparities.

Design

We used qualitative interviews with key informants to explore and identify potential disparities and their associated supply-side factors.

Setting and participants

We interviewed 3 groups of health care stakeholders (Medicaid administrators, service agency managers and staff, and patient advocates) from 14 states (n = 40).

Measures

Interviews were conducted using a semistructured interview guide, and data were thematically coded using a standardized codebook.

Results

Stakeholders identified supply-side factors inhibiting rural HCBS access, including limited availability of LTSS providers, inadequate transportation services, telecommunications barriers, threats to business viability, and challenges to caregiving workforce recruitment and retention. Stakeholders perceived that rural persons have a greater reliance on informal caregiving supports, either as a cultural preference or as compensation for the dearth of HCBS.

Conclusions/implications

LTSS rebalancing efforts that limit the institutional LTSS safety net may have unintended consequences in rural contexts if they do not account for supply-side barriers to HCBS. We identified supply-side factors that (1) inhibit beneficiaries' access to HCBS, (2) affect the adequacy and continuity of HCBS, and (3) potentially impact long-term business viability for HCBS providers. Spatial isolation of beneficiaries may contribute to a perceived lack of demand and reduce chances of funding for new services. Addressing these problems requires stakeholder collaboration and comprehensive policy approaches with attention to rural infrastructure.  相似文献   

8.

Objectives

To understand physical therapy (PT) and occupational therapy (OT) staffing levels in nursing homes and to examine their relationship with quality of care.

Design

Observational study that used 4 secondary data sources to perform facility-level panel data analyses.

Setting and participants

For-profit and nonprofit US nursing homes participating in Medicare and/or Medicaid. The final analytic sample includes 42,374 observations from 12,352 nursing homes, 2013-2016.

Methods

Three Centers for Medicare & Medicaid Services quality measures, including activities of daily living (ADL), falls, and 5-star quality, were used to examine the association between PT/OT staffing and quality. Bivariate analyses between PT/OT staffing and facility-level characteristics were run to describe the staffing disciplines in this setting. F tests and t tests were used to test for significance of each relationship. The sample was stratified into quintiles to determine if nursing homes with higher PT/OT staffing levels were linked to higher quality. Significance was determined using F tests and chi-squared tests. Finally, multilevel random effects regressions were performed to examine the relationship between PT/OT staffing and quality.

Results

Bivariate analyses indicate that PT/OT staffing levels vary across several nursing home characteristics. After stratifying the sample based on staffing levels, this study found that nursing homes that differ in staffing levels also differ in their quality performance. The random effects regression models also estimated a significant, positive relationship between higher staffing levels and quality, evidenced by each quality domain.

Conclusions/Implications

The findings demonstrate that PT/OT staffing may be important components in improving long-stay resident outcomes and overall quality. Evidence was found in support of utilizing a combination of both PT/OT staff and nursing staff to improve resident outcomes, and expanding coverage of these staff/services under Medicaid. Further research should evaluate effective multidisciplinary approaches to care to lend further support to policy makers and progress quality improvement strategies.  相似文献   

9.

Objectives

To develop patient-centered health content for a novel generic instrument (Château Santé Base [CS-Base]) that is suitable to generate values for health status.

Methods

Candidate items were drawn from existing health frameworks of generic health status instruments and placed in a diagram (HealthFANTM, Zeist, the Netherlands). Through an online survey, patients with a wide range of diseases were asked to select the 9 items that were most important to them. The importance of the items for the whole study group was determined by means of frequency distributions.

Results

After handling duplicates and overlap, the remaining set of 47 items was placed in the HealthFAN. Among the 2256 Dutch patients who started the survey, the most common diagnoses were neck and back pain, diabetes, and asthma/chronic obstructive pulmonary disease. The 5 health items mentioned most frequently as most important were pain, personal relationships, fatigue, memory, and vision. Hearing and vision, anxiety and depression, and independence and self-esteem seemed highly intertwined, so we chose to pair these items.

Conclusions

A total of 12 health items were included in CS-Base. Its content is largely based on patient input and enables classification of patients' health status. CS-Base can be administered by means of an app on a mobile phone, which makes it a convenient and attractive tool for patients and researchers.  相似文献   

10.

Objectives

To evaluate the effects of repeated cerebrospinal fluid (CSF) tap procedures in idiopathic normal pressure hydrocephalus (iNPH) patients ineligible for surgical treatment.

Design

Prospective, monocentric, pilot study.

Setting

University hospital.

Participants

Thirty-nine patients aged 75 years and older, ineligible for shunting surgical intervention.

Intervention

Repeated CSF taps.

Measurements

All patients underwent a comprehensive geriatric assessment before and after each CSF tap. Adverse events were recorded.

Results

No major side effect was reported. Eleven patients showed no response to the first CSF tap test and were excluded. In the remaining 28 patients, all physical and cognitive functions improved after the drainage procedures, except for continence (which seemed poorly influenced). According to clinical judgment, the mean time frame of benefit between CSF taps was 7 months. Patients withdrawing from the protocol during the clinical follow-up showed a worsening of functional and cognitive performances after the interruption.

Conclusions/Implications

Periodic CSF therapeutic taps are safe, allow a better control of iNPH symptoms, and prevent functional decline in geriatric patients.  相似文献   

11.

Introduction

Hypertensive disorders during pregnancy are one of the leading causes of maternal and offspring mortality and morbidity. Exposure to environmental chemicals is suspected to increase blood pressure (BP) but few studies have investigated the impact of non-persistent chemicals, in particular among pregnant women.

Methods

Women included in the study were 152 volunteer participants in the Human Early-Life Exposome (HELIX) project. They provided 3 urine samples daily over one week in two pregnancy trimesters (at around 18 and 32 weeks of gestation) to assess their exposure to phthalates (10 metabolites), phenols (7 compounds) and organophosphate pesticides (4 metabolites). BP was measured at the end of the two collection weeks. Associations between biomarkers of exposure and BP were investigated using generalized estimating equations (GEE) and linear regression, and adjusted for potential confounders.

Results

A significant decrease in systolic and/or diastolic BP was observed with exposure to some phthalate metabolites, BPA, and parabens (e.g. β GEE models for systolic BP?=??0.91?mmHg (95%CI: ?1.65; ?0.17) per doubling of BPA concentrations). These associations were more frequently observed in the second trimester of pregnancy and remained statistically significant after correction for multiple testing for BPA only. No associations were observed with organophosphate pesticides.

Conclusion

This study investigates the effect of exposure to non-persistent chemicals assessed using multiple biospecimens per subject on BP during pregnancy and suggests that higher exposure to some phthalates and phenols but not pesticides is associated with lower BP during pregnancy.  相似文献   

12.
13.

Purpose

Sex differences in adolescent health are widely documented, but social explanations for these sex differences are scarce. This study examines whether societal gender inequality (i.e., men's and women's unequal share in political participation, decision-making power, economic participation, and command over resources) relates to sex differences in adolescent physical fighting, physical activity, and injuries.

Methods

National-level data on gender inequality (i.e., the United Nations Development Program's Gender Inequality Index) were linked to health data from 71,255 15-year-olds from 36 countries in the 2009–2010 Health Behaviour in School-Aged Children study. Using multilevel logistic regression analyses, we tested the association between gender inequality and sex differences in health while controlling for country wealth (gross domestic product per capita).

Results

In all countries, boys reported more physical fighting, physical activity, and injuries than girls, but the magnitude of these sex differences varied greatly between countries. Societal gender inequality positively related to sex differences in all three outcomes. In more gender unequal countries, boys reported higher levels of fighting and physical activity compared with boys in more gender equal countries. In girls, scores were consistently low for these outcomes; however, injury was more common in countries with less gender inequality.

Conclusions

Societal gender inequality appears to relate to sex differences in some adolescent health behaviors and may contribute to the establishment of sex differences in morbidity and mortality. To reduce inequalities in the health of future generations, public health policy should target social and cultural factors that shape perceived gender norms in young people.  相似文献   

14.

Background

Interest in initiatives that promote home cooking has been increasing, but no studies have examined whether home cooking is associated with dietary quality using longitudinal data on meals served in a diverse sample of families.

Objective

The present study examined data on multiple meals per family in diverse households to determine whether home-cooked meals are more likely to contain nutritious ingredients than pre-prepared meals.

Design

Data for the study came from the National Institutes of Health–funded Family Matters Study. As part of this study, between 2015 and 2016, 150 families provided ecological momentary assessment data on 3,935 meals over an 8-day observation window.

Participants/setting

In this study, investigators followed 150 families with children aged 5 to 7 years old from six racial/ethnic groups (n=25 each non-Hispanic white, non-Hispanic black, Hispanic, Native American, Hmong, and Somali families). Recruitment occurred through primary care clinics serving low-income populations in Minnesota.

Main outcome measures

The main outcomes were participants’ self-reports of whether they served fruits, vegetables, and whole grains at a meal, and reports were made within hours of the meal.

Statistical analyses performed

Within-group estimator methods were used to estimate the associations between meal preparation and types of food served. These models held constant time-invariant characteristics of families and adjusted for whether the meal was breakfast, lunch, dinner, or a snack and whether it was a weekend meal.

Results

For all racial/ethnic and poverty status groups, meals that were fully or partly home-cooked were more likely to contain fruits and vegetables than pre-prepared meals (P<0.001). Meals that were partly home-cooked were the most likely to contain whole grains (P<0.001). Restaurant meals were more likely to contain vegetables than pre-prepared meals (P<0.001) but were equally likely to contain fruits and/or whole grains as pre-prepared meals.

Conclusions

Interventions or initiatives that encourage fully or partly home-cooked meals may help families incorporate nutritious foods into their diets. In addition, evaluations of potential strategies to increase the likelihood of supplementing pre-prepared and restaurant meals with nutritious meal ingredients warrants further investigation.  相似文献   

15.

Background

This research deals with the way people create discourses around disability, which shape the community's concept of disability.

Objective

The purpose of this article is to find out how the community configures "disability", in particular by understanding the ideas, needs and strategies that the community uses towards people with disabilities. Specifically, different roles have been involved, such as professionals, volunteers, family members and citizens. The final aim is intervening on the discourses that can contrast the full personal fulfilment of people with disabilities and social inclusion.

Methods

This paper relates to discursive psychology's theoretical references and makes use of the Methodology of Textual Analysis. The tools we used include investigation protocols specially designed to detect text both through manual "pencil and paper" and computerized denominations.

Results

The results show that those who are in direct contact with people with disabilities (volunteers and family members) are more exposed to treating them as disabled, making the deficit coincide with the person and also have a more judgemental approach.

Conclusions

From the results obtained we can see which practices can be activated to facilitate the network between the various roles in order to implement inclusive interventions and help those more exposed to prejudices.  相似文献   

16.

Background

Prenatal 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) exposure has been shown to alter sexual differentiation of the brain in animal models, impacting pubertal development, behavior, cortical dominance, and cognition. The effects of early life exposure to dioxin-like compounds on human neurodevelopment, however, are less clear and warrant further investigation.

Methods

The Seveso Women's Health Study (SWHS), initiated in 1996, is a well-characterized cohort of 981 Italian women who lived in proximity to an industrial accident in July 1976 that resulted in one of the highest residential TCDD exposures on record. In 2014–2016, we enrolled offspring born after the accident into the Seveso Second Generation Health Study. Children aged 7–17 years old (n?=?161) completed a neuropsychological assessment spanning executive function and reverse learning (Wisconsin Card Sort), non-verbal intelligence (Raven's Progressive Matrices), attention and hyperactivity (Connor's Continuous Performance (CPT), and memory (Rey's Auditory Verbal Learning). We used multivariate regression with robust standard error estimates accounting for clustering of siblings to model the associations between these outcomes and prenatal exposure defined as TCDD measured in maternal serum collected soon after the explosion and estimated to pregnancy.

Results

The children (82 male, 79 female) averaged 13.1 (±2.9) years of age. Adjusting for covariates, a 10-fold increase in maternal serum TCDD was not adversely associated with reverse learning/set-shifting, memory, attention/impulsivity, or non-verbal intelligence. In sex-stratified models, prenatal TCDD was associated with more non-perseverative errors in boys but not in girls (pint?=?0.04). TCDD was also associated with attention deficits on the CPT but only among children with the shortest breastfeeding histories.

Conclusions

While overall, there were no significant associations, the observed differential neurotoxic sensitivities to TCDD by sex and lactation history may warrant confirmation in future studies.  相似文献   

17.

Objectives

To determine whether environmental rearrangements of the long-term care nursing home can affect disruptive behavioral and psychological symptoms of dementia (BPSD) in residents with dementia.

Design

Prospective 6-month study.

Setting

The study was conducted before (phase 1) and after (phase 2) environmental rearrangements [skylike ceiling tiles in part of the shared premises, progressive decrease of the illuminance at night together with soothing streaming music, reinforcement of the illuminance during the day, walls painted in light beige, oversized clocks in corridors, and night team clothes color (dark blue) different from that of the day team (sky blue)].

Participants

All of the patients (n = 19) of the protected unit were included in the study. They were aged 65 years or older and had an estimated life expectancy above 3 months.

Measures

Number and duration of disruptive BPSD were systematically collected and analyzed over 24 hours or during late hours (6:00-12:00 pm) during each 3-month period.

Results

There was no significant change in the patients' dependency, risk of fall, cognitive or depression indexes, or treatment between phase 1 and 2. Agitation/aggression and screaming were observed mainly outside the late hours as opposed to wandering episodes that were noticed essentially within the late hours. The number of patients showing wandering was significantly lower over 24 hours during phase 2. The number of agitation/physical aggression, wandering, and screaming and the mean duration of wandering episodes were significantly (P = .039, .002, .025, and .026 respectively) decreased over 24 hours following environmental rearrangements. Similarly, a significant reduction in the number and mean duration of wandering was noticed during the late hours (P = .031 and .007, respectively).

Conclusions

Our study demonstrates that BPSD prevalence can be reduced following plain environmental rearrangements aimed at improving spatial and temporal orientation.  相似文献   

18.

Background

Excess iron levels can induce oxidative stress and could therefore affect telomere attrition. However, little is known about the impact of body iron status on telomere length.

Objective

Our aim was to examine the association between serum ferritin concentrations, an indicator of body iron status, and leukocyte telomere length in US adults.

Design

We conducted a nationwide, population-based, cross-sectional study.

Participants/setting

We used data from the National Health and Nutrition Examination Survey (NHANES) 1999-2002. We included 7,336 adults aged 20 years or older who had available data on serum ferritin levels and telomere length. High ferritin levels were defined as a serum ferritin level >200 ng/mL (449.4 pmol/L) in women and >300 ng/mL (674.1 pmol/L) in men. Low ferritin levels were defined as a serum ferritin level <30 ng/mL (67.4 pmol/L).

Main outcome measures

Leukocyte telomere length was assayed using the quantitative polymerase chain reaction method.

Statistical analyses

Linear regression with survey weights was performed to estimate the association between serum ferritin levels and telomere length.

Results

The prevalence of adults with high and low serum ferritin levels was 10.9% and 17.6%, respectively. High ferritin levels were inversely associated with telomere length compared to normal ferritin levels. After adjustment for demographic, socioeconomic and lifestyle factors, body mass index, C-reactive protein, and leukocyte cell type composition, the β coefficient for log-transformed telomere length was –0.020 (standard error [SE]=0.009; P=0.047). The association was stronger in adults aged 65 years or older (β coefficient –0.081, SE=0.017; P<0.001) than in adults 20 to 44 years old (β coefficient –0.023, SE=0.019; P=0.24) or adults aged 45 to 64 years old (β coefficient 0.024, SE=0.015; P=0.10) (P for interaction 0.003). Low ferritin levels were not significantly associated with telomere length compared with normal ferritin levels.

Conclusions

In a US nationally representative population, high body iron status was associated with shorter telomeres, especially in adults aged 65 years or older.  相似文献   

19.

Background

Children with visual impairments (VI) often reveal higher levels of sedentary time and lower levels of fundamental motor skills (FMS), health-related fitness (HRF) and physical activity (PA) than peers without visual impairments. Extrapolating correlates of HRF and PA are important to develop targeted intervention strategies aimed at improving health- and movement-based outcomes.

Objective

The purpose of this study was to examine associations among FMS (divided into locomotor and object control skills), HRF, and home- and sport-camp based PA measures in children with VI.

Methods

Children with VI (N?=?66; 9–18 years) completed PA, HRF (including cardio-respiratory fitness, muscular strength and endurance), and FMS measures during a seven-day period. Partial and zero-order correlations, which included controlling for age, degree of VI, and BMI z-score were performed.

Results

When controlling for vision, age, and BMI z-score, home-based self-report PA moderately correlated with camp-based accelerometer data (p?<?.001); home-based and camp-based PA associated with object control and locomotor subscales (p?<?.001); object control and locomotor skills were the most influential factors above and beyond vision associating with both PA measures. Cardiorespiratory fitness and grip strength were significantly associated with both object control and locomotor skills (p?<?.001).

Conclusions

Future intervention strategies that target increasing PA and HRF levels for children with VI should consider focusing upon both object control and locomotor skill development.  相似文献   

20.

Background

Households with a disabled adult are disproportionately food insecure, yet the mechanisms linking food insecurity to disability are under-specified.

Objective

To develop and empirically examine a model of the potential pathways connecting specific types of disability with food insecurity.

Methods

With pooled, repeated cross-sectional National Health and Nutrition Examination Survey data (1999–2014) including 38,354 participants, we ran probit models to estimate the probability of being food insecure as a function of different sets of disability measures and our control variables. We explored the extent to which these patterns differed for prime-aged individuals (19–59) from those age 60 and older.

Results

Work-limiting disabilities, functional limitations, and trouble managing money were associated with an increased likelihood of food insecurity for both prime-aged and older individuals, net of other forms of disability. Mobility limitations, trouble seeing, and trouble hearing increased the likelihood of food insecurity for prime-aged individuals only.

Conclusion

These findings suggest that disabilities are associated with food insecurity through multiple pathways. Revised public health and policy solutions are needed to address the high rates of food insecurity among those with disabilities.  相似文献   

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