31 research outputs found
Health Related Quality of Life in Adult Low and High-Grade Glioma Patients Using the National Institutes of Health Patient Reported Outcomes Measurement Information System (PROMIS) and Neuro-QOL Assessments
Health related quality of life (HRQOL) measures have become increasingly important in the management of glioma patients in both research and clinical practice settings. Functional impairment is common in low-grade and high-grade glioma patients as the disease has both oncological and neurological manifestations. Natural disease history as well as medical or surgical treatment can negatively influence HRQOL. There are no universal standards for HRQOL assessment in glioma patients. In this study, we examine patient perspectives on functional outcome domains and report the prevalence of impairments rates using the National Institutes of Health (NIH) Patient Reported Outcomes Measurement Information System (PROMIS) and Neuro-QOL item banks as measures of HRQOL. Retrospective analysis of a prospectively collected dataset involving 79 glioma patients reveals that quality of life concerns are the most important consideration behind making decisions about treatment in 80.7% of patients. The prevalence of functional impairment by PROMIS and NEURO-QOL assessment is high, ranging from 28.6% in the physical function domain to 43.9% in the cognitive function domain. Pain and anxiety related to physical decline is higher in LGG patients compared to HGG patients. Aphasia severity also impacts HRQOL. The results of this study suggest that the PROMIS and NEURO-QOL assessments may be important HRQOL metrics for future use in larger clinical research and clinical trial settings
Surface Gravities for 228 M, L, and T Dwarfs in the NIRSPEC Brown Dwarf Spectroscopic Survey
Global variations in diabetes mellitus based on fasting glucose and haemogloblin A1c
Fasting plasma glucose (FPG) and haemoglobin A1c (HbA1c) are both used to diagnose
diabetes, but may identify different people as having diabetes. We used data from 117
population-based studies and quantified, in different world regions, the prevalence of
diagnosed diabetes, and whether those who were previously undiagnosed and detected
as having diabetes in survey screening had elevated FPG, HbA1c, or both. We developed
prediction equations for estimating the probability that a person without previously
diagnosed diabetes, and at a specific level of FPG, had elevated HbA1c, and vice versa.
The age-standardised proportion of diabetes that was previously undiagnosed, and
detected in survey screening, ranged from 30% in the high-income western region to 66%
in south Asia. Among those with screen-detected diabetes with either test, the agestandardised
proportion who had elevated levels of both FPG and HbA1c was 29-39%
across regions; the remainder had discordant elevation of FPG or HbA1c. In most low- and
middle-income regions, isolated elevated HbA1c more common than isolated elevated
FPG. In these regions, the use of FPG alone may delay diabetes diagnosis and
underestimate diabetes prevalence. Our prediction equations help allocate finite
resources for measuring HbA1c to reduce the global gap in diabetes diagnosis and
surveillance.peer-reviewe
Worldwide trends in hypertension prevalence and progress in treatment and control from 1990 to 2019: a pooled analysis of 1201 population-representative studies with 104 million participants
Background
Hypertension can be detected at the primary health-care level and low-cost treatments can effectively control hypertension. We aimed to measure the prevalence of hypertension and progress in its detection, treatment, and control from 1990 to 2019 for 200 countries and territories.
Methods
We used data from 1990 to 2019 on people aged 30â79 years from population-representative studies with measurement of blood pressure and data on blood pressure treatment. We defined hypertension as having systolic blood pressure 140 mm Hg or greater, diastolic blood pressure 90 mm Hg or greater, or taking medication for hypertension. We applied a Bayesian hierarchical model to estimate the prevalence of hypertension and the proportion of people with hypertension who had a previous diagnosis (detection), who were taking medication for hypertension (treatment), and whose hypertension was controlled to below 140/90 mm Hg (control). The model allowed for trends over time to be non-linear and to vary by age.
Findings
The number of people aged 30â79 years with hypertension doubled from 1990 to 2019, from 331 (95% credible interval 306â359) million women and 317 (292â344) million men in 1990 to 626 (584â668) million women and 652 (604â698) million men in 2019, despite stable global age-standardised prevalence. In 2019, age-standardised hypertension prevalence was lowest in Canada and Peru for both men and women; in Taiwan, South Korea, Japan, and some countries in western Europe including Switzerland, Spain, and the UK for women; and in several low-income and middle-income countries such as Eritrea, Bangladesh, Ethiopia, and Solomon Islands for men. Hypertension prevalence surpassed 50% for women in two countries and men in nine countries, in central and eastern Europe, central Asia, Oceania, and Latin America. Globally, 59% (55â62) of women and 49% (46â52) of men with hypertension reported a previous diagnosis of hypertension in 2019, and 47% (43â51) of women and 38% (35â41) of men were treated. Control rates among people with hypertension in 2019 were 23% (20â27) for women and 18% (16â21) for men. In 2019, treatment and control rates were highest in South Korea, Canada, and Iceland (treatment >70%; control >50%), followed by the USA, Costa Rica, Germany, Portugal, and Taiwan. Treatment rates were less than 25% for women and less than 20% for men in Nepal, Indonesia, and some countries in sub-Saharan Africa and Oceania. Control rates were below 10% for women and men in these countries and for men in some countries in north Africa, central and south Asia, and eastern Europe. Treatment and control rates have improved in most countries since 1990, but we found little change in most countries in sub-Saharan Africa and Oceania. Improvements were largest in high-income countries, central Europe, and some upper-middle-income and recently high-income countries including Costa Rica, Taiwan, Kazakhstan, South Africa, Brazil, Chile, Turkey, and Iran.
Interpretation
Improvements in the detection, treatment, and control of hypertension have varied substantially across countries, with some middle-income countries now outperforming most high-income nations. The dual approach of reducing hypertension prevalence through primary prevention and enhancing its treatment and control is achievable not only in high-income countries but also in low-income and middle-income settings
Pre-Statistical Considerations for Harmonization of Cognitive Instruments: Harmonization of ARIC, CARDIA, CHS, FHS, MESA, and NOMAS.
Age differences in virtual environment and real world path integration
Accurate path integration requires the integration of visual, proprioceptive, and vestibular self-motion cues and age effects associated with alterations in processing information from these systems may contribute to declines in path integration abilities. The present study investigated age-related differences in path integration in conditions that varied as a function of available sources of sensory information. Twenty-two healthy, young (23.8 ± 3.0 yrs.) and 16 older (70.1 ± 6.4 yrs.) adults participated in distance reproduction and triangle completion tasks performed in a virtual environment and two real world conditions: guided walking and wheelchair propulsion. For walking and wheelchair propulsion conditions, participants wore a blindfold and wore noise-blocking headphones and were guided through the workspace by the experimenter. For the virtual environment (VE) condition, participants viewed self-motion information on a computer monitor and used a joystick to navigate through the environment. For triangle completion tasks, older compared to younger individuals showed greater errors in rotation estimations performed in the wheelchair condition; and for rotation and distance estimations in the VE condition. Distance reproduction tasks, in contrast, did not show any age effects. These findings demonstrate that age differences in path integration vary as a function of the available sources of information and by the complexity of outbound pathway
P4â368: PreâStatistical Harmonization Of Cognitive Measures Across Six PopulationâBased Cohorts: Aric, Cardia, Chs, Fhs, Mesa, And Nomas
Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/153227/1/alzjjalz201807192.pd
Bilingualism, assessment language, and the Montreal Cognitive Assessment in Mexican Americans
Background/ObjectivesAssessment of cognition in linguistically diverse aging populations is a growing need. Bilingualism may complicate cognitive measurement precision, and bilingualism may vary across Hispanic/Latinx subâpopulations. We examined the association among bilingualism, assessment language, and cognitive screening performance in a primarily nonâimmigrant Mexican American community.DesignProspective, communityâbased cohort study: The Brain Attack Surveillance in Corpus Christi (BASIC)âCognitive study.SettingNueces County, Texas.ParticipantsCommunityâdwelling Mexican Americans age 65+, recruited doorâtoâdoor using a twoâstage area probability sampling procedure.MeasurementsMontreal Cognitive Assessment (MoCA); selfâreported bilingualism scale. Participants were classified as monolingual, Spanish dominant bilingual, English dominant bilingual, or balanced bilingual based upon bilingualism scale responses. Linear regressions examined relationships among bilingualism, demographics, cognitive assessment language, and MoCA scores.ResultsThe analytic sample included 547 Mexican American participants (60% female). Fiftyâeight percent were classified as balanced bilingual, the majority (88.6%) of whom selected assessment in English. Balanced bilinguals that completed the MoCA in English performed better than balanced bilinguals that completed the MoCA in Spanish (b = â4.0, pââ0.10).ConclusionBilingualism is important to consider in cognitive aging studies in linguistically diverse communities. Future research should examine whether cognitive test language selection affects cognitive measurement precision in balanced bilinguals.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/1/jgs17209.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/2/jgs17209-sup-0001-supinfo.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/3/jgs17209_am.pd
Bilingualism, assessment language, and the Montreal Cognitive Assessment in Mexican Americans
Background/ObjectivesAssessment of cognition in linguistically diverse aging populations is a growing need. Bilingualism may complicate cognitive measurement precision, and bilingualism may vary across Hispanic/Latinx subâpopulations. We examined the association among bilingualism, assessment language, and cognitive screening performance in a primarily nonâimmigrant Mexican American community.DesignProspective, communityâbased cohort study: The Brain Attack Surveillance in Corpus Christi (BASIC)âCognitive study.SettingNueces County, Texas.ParticipantsCommunityâdwelling Mexican Americans age 65+, recruited doorâtoâdoor using a twoâstage area probability sampling procedure.MeasurementsMontreal Cognitive Assessment (MoCA); selfâreported bilingualism scale. Participants were classified as monolingual, Spanish dominant bilingual, English dominant bilingual, or balanced bilingual based upon bilingualism scale responses. Linear regressions examined relationships among bilingualism, demographics, cognitive assessment language, and MoCA scores.ResultsThe analytic sample included 547 Mexican American participants (60% female). Fiftyâeight percent were classified as balanced bilingual, the majority (88.6%) of whom selected assessment in English. Balanced bilinguals that completed the MoCA in English performed better than balanced bilinguals that completed the MoCA in Spanish (b = â4.0, pââ0.10).ConclusionBilingualism is important to consider in cognitive aging studies in linguistically diverse communities. Future research should examine whether cognitive test language selection affects cognitive measurement precision in balanced bilinguals.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/1/jgs17209.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/2/jgs17209-sup-0001-supinfo.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/168453/3/jgs17209_am.pd
Memory and language cognitive data harmonization across the United States and Mexico
Abstract INTRODUCTION We used cultural neuropsychologyâinformed procedures to derive and validate harmonized scores representing memory and language across populationâbased studies in the United States and Mexico. METHODS Data were from the Health and Retirement Study Harmonized Cognitive Assessment Protocol (HRSâHCAP) and the Mexican Health and Aging Study (MHAS) Ancillary Study on Cognitive Aging (MexâCog). We statistically coâcalibrated memory and language domains and performed differential item functioning (DIF) analysis using a cultural neuropsychological approach. We examined relationships among harmonized scores, age, and education. RESULTS We included 3170 participants from the HRSâHCAP (Mage = 76.6 [standard deviation (SD): 7.5], 60% female) and 2042 participants from the MexâCog (Mage = 68.1 [SD: 9.0], 59% female). Five of seven memory items and one of twelve language items demonstrated DIF by study. Harmonized memory and language scores showed expected associations with age and education. DISCUSSION A cultural neuropsychological approach to harmonization facilitates the generation of harmonized measures of memory and language function in crossânational studies. HIGHLIGHTS We harmonized memory and language scores across studies in the United States and Mexico. A cultural neuropsychological approach to data harmonization was used. Harmonized scores showed minimal measurement differences between cohorts. Future work can use these harmonized scores for crossânational studies of Alzheimer's disease and related dementias