In a retrospective review to assess neuroanatomical targets of radiation-induced cognitive decline, dose volume histogram (DVH) analyses of specific brain regions of interest (ROI) are correlated to ...neurocognitive performance in 57 primary brain tumor survivors.
Neurocognitive assessment at baseline included Trail Making Tests A/B, a modified Rey-Osterreith Complex Figure, California or Hopkins Verbal Learning Test, Digit Span, and Controlled Oral Word Association. DVH analysis was performed for multiple neuroanatomical targets considered to be involved in cognition. The %v10 (percent of ROI receiving 10 Gy), %v40, and %v60 were calculated for each ROI. Factor analysis was used to estimate global cognition based on a summary of performance on individual cognitive tests. Stepwise regression was used to determine which dose volume predicted performance on global factors and individual neurocognitive tests for each ROI.
Regions that predicted global cognitive outcomes at doses <60 Gy included the corpus callosum, left frontal white matter, right temporal lobe, bilateral hippocampi, subventricular zone, and cerebellum. Regions of adult neurogenesis primarily predicted cognition at %v40 except for the right hippocampus which predicted at %v10. Regions that did not predict global cognitive outcomes at any dose include total brain volume, frontal pole, anterior cingulate, right frontal white matter, and the right precentral gyrus.
Modeling of radiation-induced cognitive decline using neuroanatomical target theory appears to be feasible. A prospective trial is necessary to validate these data.
Symptoms of complex illnesses such as cancer often present with a high degree of heterogeneity between patients. At the same time, there are often core symptoms that act as common drivers for other ...symptoms, such as fatigue leading to depression and cognitive dysfunction. These symptoms are termed bridge symptoms and when combined with heterogeneity in symptom presentation, are difficult to detect using traditional unsupervised clustering techniques. This article develops a method for identifying patient communities based on bridge symptoms termed concordance network clustering. An empirical study of breast cancer symptomatology is presented, and demonstrates the applicability of this method for identifying bridge symptoms.
Adequate dietary quality is necessary for children's appropriate development and may be influenced by family factors. This study with 24 healthy 3-5-year-old children assessed the associations of ...parental stress and household food insecurity (HFI) with a child's dietary quality. Parents completed three 24 h dietary recalls, and the Healthy Eating Index was calculated to assess dietary quality. Parents also completed a questionnaire, including The Perceived Stress Scale (assessing overall parental stress) and the Hunger Vital Sign screen (assessing HFI). Children's height/weight were measured, and BMIz was calculated. Separate multivariable linear regression models assessed the association of dietary quality components with HFI and parental stress, adjusting for household income, child sex, and child BMI z-score. In bivariate analyses, children with HFI consumed more added sugars, and parental stress was associated with the child's greens/beans intake. In multivariable analysis, HFI was associated with lower total protein scores and higher added sugar intake, while parental stress was associated with lower greens/beans intake. Higher household income was associated with higher total vegetable and sodium intake, and children with a higher BMIz had a lower total protein intake. Parental stress and HFI can impact a child's dietary quality; providers should counsel families on strategies to improve diet quality.
At both the individual and societal levels, the health and economic burden of disability in older adults is enormous in developed countries, including the U.S. Recent studies have revealed that the ...disablement process in older adults often comprises episodic periods of impaired functioning and periods that are relatively free of disability, amid a secular and natural trend of decline in functioning. Rather than an irreversible, progressive event that is analogous to a chronic disease, disability is better conceptualized and mathematically modeled as states that do not necessarily follow a strict linear order of good to bad. Statistical tools, including Markov models, which allow bidirectional transition between states, and random effects models, which allow individual-specific rate of secular decline, are pertinent. In this article, we propose a mixed effects, multivariate, hidden Markov model to handle partially ordered disability states. The model generalizes the continuation ratio model for ordinal data in the generalized linear model literature and provides a formal framework for testing the effects of risk factors and/or an intervention on the transitions between different disability states. Under a generalization of the proportional odds ratio assumption, the proposed model circumvents the problem of a potentially large number of parameters when the number of states and the number of covariates are substantial. We describe a maximum likelihood method for estimating the partially ordered, mixed effects model and show how the model can be applied to a longitudinal dataset that consists of N = 2903 older adults followed for 10 years in the Health Aging and Body Composition Study. We further statistically test the effects of various risk factors upon the probabilities of transition into various severe disability states. The result can be used to inform geriatric and public health science researchers who study the disablement process. Supplementary materials for this article are available online.
Purpose
Health-related quality of life (HRQoL) is a multidimensional concept comprising multiple domains such as physical, emotional, and social well-being. Many analyses use a sum score to represent ...the construct. However, this approach implies that gain in one domain can compensate for a deficit in another, and thus such analyses may not capture HRQoL profiles. Additionally, within-individual change over time, such as improvement in one domain but deterioration in another, may not be detected. The objectives of this research are to demonstrate the utility of a non-compensatory approach by (1) evaluating this approach applied to HRQoL data, and (2) comparing the approach to a compensatory method.
Methods
Data from a sample of 653 breast cancer survivors (BCS) provided five measurement time points over 18 months. We analyzed the scores from five domains on the FACT-B questionnaire (physical, functional, social, and emotional well-being and breast cancer-related concerns) using the multivariate hidden Markov model (MHMM), a non-compensatory approach that identifies different HRQoL states and associated BCS subgroups and their trajectories.
Results
The MHMM delineated six states. States 1 and 2 had low well-being scores across all domains, with state 2 slightly better than state 1. States 3 and 4 had similar overall HRQoL scores, but different profiles with compensation occurring across the domains of both physical and social well-being. States 5 and 6 had almost identical overall scores with compensation occurring between the domains of both social and emotional well-being. Over time, states 3–6 mostly “communicated” with each other (with moderate probabilities of transitioning between states). Compensation across domains could mask subtle changes occurring in BCS. We found that a trend analysis using both compensatory and non-compensatory approaches showed improvement in the HRQoL in BCS over time.
Conclusion
The non-compensatory analysis of FACT-B shows differential profiles and trajectories in the HRQoL of BCS not captured by the sum score or one-domain-at-a-time approach.
Household food insecurity (HFI) is associated with poor general and mental health. Prior studies assessed parent and child mental health separately and did not assess other social risks.
To assess ...the relationship between HFI and both parental and child mental health.
Parents of 3-5-year-old children completed validated measures of food insecurity and mental health. Separate linear regression models were used for unadjusted analysis for each mental health outcome (parent depression, anxiety, and stress, and child mental health). Multivariable analysis was performed using hierarchical regression to adjust for relevant covariates.
Children (n = 335) were racially and socioeconomically diverse. HFI was reported in 10% of participants. HFI was associated with worse parent depression and stress in unadjusted analyses; however, after adjusting for covariates, the associations became insignificant. HFI was significantly associated with worse child mental health in unadjusted and multivariable analysis (aβ 2.24, 95% CI 0.59-3.88) compared to those without HFI.
HFI was not associated with parental mental health outcomes when other social risks were included in the analyses; however, HFI was significantly associated with worse childhood mental health in all analyses. Pediatric providers should screen for and develop interventions to target both HFI and mental health.
Household food insecurity was associated with worse parent depression and stress in unadjusted analyses; however, after adjusting for other social risks, the associations became insignificant. Household food insecurity was significantly associated with worse child mental health, even after adjusting for demographics, other social risks, and parent mental health. Social risks are differentially associated with parent and child mental health. Understanding the complexities of family stressors can help better support parents and children struggling with mental health problems and social risks.
This study aimed to assess how parent stress and COVID-19 impact on the family are associated with parental pressure to eat during the COVID-19 pandemic. Parents of healthy preschool-aged children ...completed measures including pressure to eat (Child Feeding Questionnaire), parent perception of their stress (Perceived Stress Scale), household food insecurity (Hunger Vital Sign) and effects of COVID-19 on families (COVID-19 Exposure and Family Impact). Children (N = 228) were racially, ethnically, and socioeconomically diverse (34 % Black, 15 % Hispanic, and 29 % with household income <$20,000). Bivariate analyses showed that parent stress at Year 1 (β 0.02; 95 % CI 0.006, 0.04) was significantly associated with pressure to eat at Year 1 and that COVID-19 impact at Year 1 (β 0.02; 95 % CI 0.001, 0.03) was also significantly associated with pressure to eat. Multivariable linear regression analyses showed that parent stress at Year 1 was significantly associated with pressure to eat at Year 1 (β 0.39; 95 % CI 0.16, 0.61) while COVID-19 impact was not significantly associated with pressure to eat at Year 1. This study, consisting of racially and socioeconomically diverse children, found that while parent stress was significantly associated with increased parental utilization of pressure to eat feeding practice, COVID-19 impact was not significantly associated with pressure to eat in adjusted analyses. This suggests that overall perceived stress by parents could be an important factor in parent pressuring feeding practices.
•We surveyed parents of 3–5 year old children annually between February 2020 and December 2021•Pressuring feeding practices decreased slightly between 2020 and 2021•In bivariate analyses, higher pressure was associated with concurrent parent stress and COVID-19 impact•In multivariable analysis, increased pressure eat was associated with concurrent parent stress but not COVID-19 impact
Substantive previous work has shown that both gait speed and global cognition decline as people age. Rates of their decline, as opposed to cross-sectional measurements, could be more informative of ...future functional status and other clinical outcomes because they more accurately represent deteriorating systems. Additionally, understanding the sex and racial disparity in the speed of deterioration, if any, is also important as ethnic minorities are at an increased risk of mobility disability and dementia.
Data from 2 large longitudinal intervention studies were integrated. Rates of decline were derived from individual-level measures of gait speed of 400-m walk and scores on the Modified Mini Mental State Examination (3MSE). We also assessed age-associated declines and accelerations in changes across the ages represented in the studies (age range 53-90).
The mean rate of decline in 400-m gait speed across individuals was 0.03 m/s per year, and multivariable analysis showed a significant acceleration in decline of -0.0013 m/s/y2 (p < .001). Both race and sex moderated the rate of decline. For global cognition, the mean rate of decline was 0.05 of a point per year on the 3MSE scale, and acceleration in the rate of decline was significant (-0.017 point/y2, p < .001), but neither sex nor race moderated the decline.
Rate of decline in physical but not cognitive function appears moderated by sex and race. This finding, as well as rates and accelerations of decline estimated herein, could inform future intervention studies.
NCT00017953 (Look AHEAD); NCT01410097 (Look AHEAD ancillary); NCT00116194 (LIFE).
As the population ages, the prevention of falls is an increasingly important public health problem. Balance assessment forms an important component of fall-prevention programs for older adults. The ...recent development of cost-effective and highly responsive virtual reality (VR) systems means new methods of balance assessment are feasible in a clinical setting. This proof-of-concept study made use of the submillimeter tracking built into modern VR head-mounted displays (VRHMDs) to assess balance through the use of visual-vestibular conflict. The objective of this study was to evaluate the validity, acceptability, and reliability of using a VRHMD to assess balance in older adults.
Validity was assessed by comparing measurements from the VRHMD to measurements of postural sway from a force plate. Acceptability was assessed through the use of the Simulator Sickness Questionnaire pre- and postexposure to assess possible side effects of the visual-vestibular conflict. Reliability was assessed by measuring correlations between repeated measurements 1 week apart. Variables of possible importance that were found to be reliable (
≥0.9) between tests separated by a week were then tested for differences compared to a control group. Assessment was performed as a cross-sectional single-site community center-based study in 13 older adults (≥65 years old, 80.2±7.3 years old, 77% female, five at risk of falls, eight controls). The VR balance assessment consisted of four modules: a baseline module, a reaction module, a balance module, and a seated assessment.
There was a significant difference in the rate at which participants with a risk of falls changed their tilt in the anteroposterior direction compared to the control group. Participants with a risk of falls changed their tilt in the anteroposterior direction at 0.7°/second vs 0.4°/second for those without a history of falls. No significant differences were found between pre/postassessment for oculomotor score or total Simulator Sickness Questionnaire score. Both the force plate and the head-mounted display balance-assessment system were able to detect differences between conditions meant to mask visual and proprioceptive information.
This VRHMD is both affordable and portable, causes minimal simulator sickness, and produces repeatable results that can be used to assess balance in older adults.
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