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1.
BMJ Health Care Inform ; 31(1)2024 Jun 03.
Article in English | MEDLINE | ID: mdl-38830766

ABSTRACT

BACKGROUND: Current approaches for initial coronary artery disease (CAD) assessment rely on pretest probability (PTP) based on risk factors and presentations, with limited performance. Infrared thermography (IRT), a non-contact technology that detects surface temperature, has shown potential in assessing atherosclerosis-related conditions, particularly when measured from body regions such as faces. We aim to assess the feasibility of using facial IRT temperature information with machine learning for the prediction of CAD. METHODS: Individuals referred for invasive coronary angiography or coronary CT angiography (CCTA) were enrolled. Facial IRT images captured before confirmatory CAD examinations were used to develop and validate a deep-learning IRT image model for detecting CAD. We compared the performance of the IRT image model with the guideline-recommended PTP model on the area under the curve (AUC). In addition, interpretable IRT tabular features were extracted from IRT images to further validate the predictive value of IRT information. RESULTS: A total of 460 eligible participants (mean (SD) age, 58.4 (10.4) years; 126 (27.4%) female) were included. The IRT image model demonstrated outstanding performance (AUC 0.804, 95% CI 0.785 to 0.823) compared with the PTP models (AUC 0.713, 95% CI 0.691 to 0.734). A consistent level of superior performance (AUC 0.796, 95% CI 0.782 to 0.811), achieved with comprehensive interpretable IRT features, further validated the predictive value of IRT information. Notably, even with only traditional temperature features, a satisfactory performance (AUC 0.786, 95% CI 0.769 to 0.803) was still upheld. CONCLUSION: In this prospective study, we demonstrated the feasibility of using non-contact facial IRT information for CAD prediction.


Subject(s)
Coronary Artery Disease , Face , Thermography , Humans , Thermography/methods , Coronary Artery Disease/diagnostic imaging , Male , Female , Middle Aged , Face/diagnostic imaging , Aged , Predictive Value of Tests , Feasibility Studies , Body Temperature , Machine Learning , Coronary Angiography , Computed Tomography Angiography , Prospective Studies , Infrared Rays
2.
Int J Epidemiol ; 53(2)2024 Feb 14.
Article in English | MEDLINE | ID: mdl-38365967

ABSTRACT

AIM: To investigate mid-life employment trajectories in relation to later-life memory function and rate of decline in rural South Africa. METHODS: Data from the Agincourt Health and Socio-Demographic Surveillance System were linked to the 'Health and Ageing in Africa: A Longitudinal Study of an INDEPTH Community in South Africa' (HAALSI) in rural Agincourt, South Africa (N = 3133). Employment was assessed every 4 years over 2000-12 as being employed (0, 1, 2 and ≥3 time points), being employed in a higher-skill occupation (0, 1, 2 and ≥3 time points) and dynamic employment trajectories identified using sequence analysis. Latent memory z-scores were assessed over 2014-22. Mixed-effects linear regression models were fitted to examine the associations of interest. RESULTS: Sustained mid-life employment from 2000-12 (ß = 0.052, 95% CI: -0.028 to 0.132, 1 vs 0 time points; ß = 0.163, 95% CI: 0.077 to 0.250, 2 vs 0 time points; ß = 0.212, 95% CI: 0.128 to 0.296, ≥3 vs 0 time points) and greater time spent in a higher-skill occupation (ß = 0.077, 95% CI: -0.020 to 0.175, 1 vs 0 time points; ß = 0.241, 95% CI: 0.070 to 0.412, 2 vs 0 time points; ß = 0.361, 95% CI: 0.201 to 0.520, ≥3 vs 0 time points) were associated with higher memory scores in 2014/15, but not subsequent rate of memory decline. Moving from a lower-skill to higher-skill occupation was associated with higher memory function, but a faster rate of decline over 2014-22. CONCLUSIONS: Sustained mid-life employment, particularly in higher-skill occupations, may contribute to later-life memory function in this post-Apartheid South African setting.


Subject(s)
Aging , Cognition , Humans , South Africa/epidemiology , Longitudinal Studies , Employment , Rural Population
3.
Article in English | MEDLINE | ID: mdl-38284333

ABSTRACT

OBJECTIVES: Identifying social policies that can promote cognitive health is crucial for reducing the global burden of dementia. We evaluated the importance of educational attainment for later-life cognitive function in various social and geographic settings. METHODS: Using harmonized data for individuals aged ≥65 years from the United States Health and Retirement Study (HRS) and its international partner studies in England, Mexico, China, and India, and each study's respective Harmonized Cognitive Assessment Protocol (HCAP), we conducted a cross-national comparative study to examine the role of educational attainment in later-life cognitive function across countries (n = 14,980, 2016-2019). We used multivariable-adjusted regression to estimate associations between educational attainment and harmonized global cognitive function scores. RESULTS: In Mexico, China, and India, the general cognitive function scores on average are approximately one standard deviation of the HRS-HCAP cognitive function score distribution lower compared to the United States and England, paralleling patterns of educational attainment across countries. In all countries, higher educational attainment was associated with progressively higher later-life cognitive function scores. Population-level differences in educational attainment explained about 50%-90% of the observed differences in cognitive function scores across countries. DISCUSSION: The relationship between education and later-life cognitive function across social and geographic contexts underscores the crucial role of education to promote cognitive health and reduce dementia risk. Continual improvement of educational attainment in low- and middle-income settings may yield a significant pay-off in later-life cognitive health.


Subject(s)
Academic Success , Dementia , Humans , United States/epidemiology , Developing Countries , Educational Status , Cognition , Dementia/diagnosis
4.
bioRxiv ; 2023 Nov 22.
Article in English | MEDLINE | ID: mdl-38045409

ABSTRACT

Mitochondrial (MT) mutations serve as natural genetic markers for inferring clonal relationships using single cell sequencing data. However, the fundamental challenge of MT mutation-based lineage tracing is automated identification of informative MT mutations. Here, we introduced an open-source computational algorithm called "MitoTracer", which accurately identified clonally informative MT mutations and inferred evolutionary lineage from scRNA-seq or scATAC-seq samples. We benchmarked MitoTracer using the ground-truth experimental lineage sequencing data and demonstrated its superior performance over the existing methods measured by high sensitivity and specificity. MitoTracer is compatible with multiple single cell sequencing platforms. Its application to a cancer evolution dataset revealed the genes related to primary BRAF-inhibitor resistance from scRNA-seq data of BRAF-mutated cancer cells. Overall, our work provided a valuable tool for capturing real informative MT mutations and tracing the lineages among cells.

5.
Proc Natl Acad Sci U S A ; 120(51): e2306819120, 2023 Dec 19.
Article in English | MEDLINE | ID: mdl-38079549

ABSTRACT

Loneliness is a growing public health concern worldwide. We characterized the association between cumulative loneliness and subsequent all-cause mortality, using data from 9,032 participants aged 50+ in the population-based US Health and Retirement Study (HRS) from 1996 to 2019. Loneliness status (yes; no) was measured biennially from 1996 to 2004, and we categorized the experience of cumulative loneliness over the 8-y period as never, one time point, two time points, and ≥three time points. A multivariable-adjusted age-stratified Cox proportional hazards regression model was fitted to examine the association between cumulative loneliness from 1996 to 2004 and all-cause mortality from 2004 to 2019. Excess deaths due to each category of cumulative loneliness were calculated. Compared to those who never reported loneliness from 1996 to 2004, participants experiencing loneliness at one time point, two time points, and ≥three time points respectively had 1.05 (95% CI: 0.96 to 1.15), 1.06 (95% CI: 0.95 to 1.19), and 1.16 (95% CI: 1.02 to 1.33) times higher hazards of mortality from 2004 to 2019 (P trend = 0.01). These results correspond to 106 (95% CI: 68 to 144), 202 (95% CI: 146 to 259), and 288 (95% CI: 233 to 343) excess deaths per 10,000 person-years, for those experiencing loneliness at each of one, two, or ≥three time points from 1996 to 2004. Cumulative loneliness in mid-to-later life may thus be a mortality risk factor with a notable impact on excess mortality. Loneliness may be an important target for interventions to improve life expectancy in the United States.


Subject(s)
Loneliness , Middle Aged , Humans , United States/epidemiology , Aged , Risk Factors
6.
Cancer Cell ; 41(10): 1788-1802.e10, 2023 10 09.
Article in English | MEDLINE | ID: mdl-37816332

ABSTRACT

Mitochondria (MT) participate in most metabolic activities of mammalian cells. A near-unidirectional mitochondrial transfer from T cells to cancer cells was recently observed to "metabolically empower" cancer cells while "depleting immune cells," providing new insights into tumor-T cell interaction and immune evasion. Here, we leverage single-cell RNA-seq technology and introduce MERCI, a statistical deconvolution method for tracing and quantifying mitochondrial trafficking between cancer and T cells. Through rigorous benchmarking and validation, MERCI accurately predicts the recipient cells and their relative mitochondrial compositions. Application of MERCI to human cancer samples identifies a reproducible MT transfer phenotype, with its signature genes involved in cytoskeleton remodeling, energy production, and TNF-α signaling pathways. Moreover, MT transfer is associated with increased cell cycle activity and poor clinical outcome across different cancer types. In summary, MERCI enables systematic investigation of an understudied aspect of tumor-T cell interactions that may lead to the development of therapeutic opportunities.


Subject(s)
DNA, Mitochondrial , Neoplasms , Animals , Humans , DNA, Mitochondrial/genetics , T-Lymphocytes/metabolism , Mitochondria/genetics , Mitochondria/metabolism , Neoplasms/genetics , Neoplasms/metabolism , Mammals/genetics , Mammals/metabolism
7.
bioRxiv ; 2023 Oct 17.
Article in English | MEDLINE | ID: mdl-37905034

ABSTRACT

High grade serous ovarian cancer (HGOC) is a major cause of death in women. Early detection of HGOC usually leads to a cure, yet it remains a clinical challenge with over 90% HGOCs diagnosed at advanced stages. This is mainly because conventional biomarkers are not sensitive to detect the microscopic yet metastatic early HGOC lesions. In this study, we sequenced the blood T cell receptor (TCR) repertoires of 466 ovarian cancer patients and controls, and systematically investigated the immune repertoire signatures in HGOCs. We observed quantifiable changes of selected TCRs in HGOCs that are reproducible in multiple independent cohorts. Importantly, these changes are stronger during stage I. Using pre-diagnostic patient blood samples from the Nurses' Health Study, we confirmed that HGOC signals can be detected in the blood TCR repertoire up to 4 years proceeding conventional diagnosis. Our findings may provide the basis of an immune-based HGOC early detection criterion.

8.
Lancet Healthy Longev ; 4(9): e461-e469, 2023 09.
Article in English | MEDLINE | ID: mdl-37544315

ABSTRACT

BACKGROUND: Household wealth is positively related to cognitive health outcomes in later life. However, the association between negative wealth shocks and cognitive function in later life, and whether this association might differ across countries at different levels of economic development, is unclear. We aimed to investigate whether negative wealth shocks in later life are associated with cognitive function in older adults in China, England, Mexico, and the USA, and whether this association is modified by country income level. METHODS: For this population-based, cross-nationally harmonised, longitudinal study, data were analysed from core interviews of the population-based US Health and Retirement Study (2012 and 2016) and its partner studies in China (the China Health and Retirement Longitudinal Study; 2015 and 2018), England (the English Longitudinal Study of Ageing; 2012 and 2016), and Mexico (Mexican Health and Aging Study; 2012 and 2015-16), and their respective Harmonized Cognitive Assessment Protocols (HCAPs). Negative wealth shocks over the follow-up periods of the respective cohorts were defined in two ways: an extreme loss of 75% or greater from the baseline amount of wealth, and a decline in within-population wealth quintile rank. The primary outcome was the harmonised general cognitive function (GCF) factor score, which was constructed with factor analysis on the HCAP neuropsychological assessments of memory, orientation, attention, executive function, and verbal fluency performance (mean 0; SD 1). We used sampling-weighted, multivariable-adjusted linear models to examine associations. FINDINGS: Data from 9465 participants were included in this analysis: 3796 from China, 1184 from England, 1193 from Mexico, and 3292 from the USA. The mean baseline age of participants was 68·5 (SD 5·4) years in China (49·8% women), 72·0 (7·0) years in England (54·6% women), 70·6 (6·8) years in Mexico (55·1% women), and 72·7 (7·5) years in the USA (60·4% women). A wealth loss of 75% or greater was negatively associated with subsequent cognitive function in the USA (ß -0·16 SD units; 95% CI -0·29 to -0·04) and China (-0·14; -0·21 to -0·07), but not in England (-0·01; -0·24 to 0·22) or Mexico (-0·11; -0·24 to 0·03). Similarly, within-population wealth quintile rank declines were negatively associated with subsequent cognitive function in the USA (ß -0·07 per quintile rank decline; 95% CI -0·11 to -0·03) and China (ß -0·07; -0·09 to -0·04), but not in England (-0·05; -0·11 to 0·01) or Mexico (-0·03; -0·07 to 0·01). INTERPRETATION: The impact of wealth shocks in later life on subsequent lower level of cognitive function of older adults in China, England, Mexico, and the USA differed across macro-level socioeconomic structures. These findings suggest that government policies and social safety nets in countries with different levels of economic development might have a role in protecting older adults from adverse health effects of wealth losses in later life. FUNDING: US National Institute on Aging, US National Institutes of Health.


Subject(s)
Aging , Cognition , Humans , Female , Aged , Male , Longitudinal Studies , Mexico/epidemiology , Socioeconomic Factors , Aging/psychology
9.
IEEE Trans Image Process ; 32: 4716-4727, 2023.
Article in English | MEDLINE | ID: mdl-37506025

ABSTRACT

Standard convolution applied to image inpainting would lead to color discrepancy and blurriness for treating valid and invalid/hole regions without difference, which was partially amended by partial convolution (PConv). In PConv, a binary/hard mask was maintained as an indicator of valid and invalid pixels, where valid pixels and invalid pixels were treated differently. However, it can not describe validity degree of an impaired pixel. In addition, mask and image paths were separated, without sharing convolution kernel and exchanging information mutually, reducing data utilization efficiency. In this paper, a mask-guided convolution (MagConv) is proposed for image inpainting. In MagConv, mask and image paths share a convolution kernel to interact with each other and form a joint optimization scheme. In addition, a learnable piecewise activation function is raised to replace the reciprocal function of PConv, providing more flexible and adaptable compensation to convolution contaminated by invalid pixels. It also results in a soft mask of floating-point coefficients from 0 to 1 capable of indicating the validity degree of each pixel. Last but not least, MagConv splits the convolution kernel into positive and negative weights so that they can evaluate the validity of each pixel faithfully. Qualitative and quantitative experiments on the CelebA, Paris StreetView and Places2 datasets demonstrate that our method achieves favorable visual quality against state-of-the-art approaches.

10.
Alzheimers Dement ; 19(2): 578-588, 2023 02.
Article in English | MEDLINE | ID: mdl-35920364

ABSTRACT

INTRODUCTION: The study objective was to investigate the association between loneliness duration and memory function over a 20-year period. METHODS: Data were from 9032 adults aged ≥50 in the Health and Retirement Study. Loneliness status (yes vs. no) was assessed biennially from 1996 to 2004 and its duration was categorized as never, 1 time point, 2 time points, and ≥3 time points. Episodic memory was assessed from 2004 to 2016 as a composite of immediate and delayed recall trials combined with proxy-reported memory. Mixed-effects linear regression models were fitted. RESULTS: A longer duration of loneliness was associated with lower memory scores (P < 0.001) and a faster rate of decline (P < 0.001). The association was stronger among adults aged ≥65 than those aged <65 (three-way interaction P = 0.013) and was stronger among women than men (three-way interaction P = 0.002). DISCUSSION: Cumulative loneliness may be a salient risk factor for accelerated memory aging, especially among women aged ≥65. HIGHLIGHT: A longer duration of loneliness was associated with accelerated memory aging. The association was stronger among women than men and among older adults than the younger. Reducing loneliness in mid- to late life may help maintain memory function.


Subject(s)
Loneliness , Memory, Episodic , Male , Humans , Female , United States/epidemiology , Aged , Aging , Risk Factors , Longitudinal Studies
11.
SSM Popul Health ; 20: 101263, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36281246

ABSTRACT

Material resources owned by households that affect daily living conditions may be salient for cognitive health during aging, especially in low-income settings, but there is scarce evidence on this topic. We investigated relationships between long-term trends in household material resources and cognitive function among older adults in a population-representative study in rural South Africa. Data were from baseline interviews with 4580 adults aged ≥40 in "Health and Ageing in Africa: A Longitudinal Study of an INDEPTH Community in South Africa" (HAALSI) in 2014/2015 linked to retrospective records on their household material resources from the Agincourt Health and Socio-Demographic Surveillance System (HDSS) from 2001 to 2013. Household material resources were assessed biennially in the Agincourt HDSS using a five-point index that captured dwelling materials, water and sanitation, sources of power, livestock, and technological amenities. Cognitive function was assessed in HAALSI and analyzed as a z-standardized latent variable capturing time orientation, episodic memory, and numeracy. We evaluated the relationships between quintiles of each of the mean resource index score, volatility in resource index score, and change in resource index score and subsequent cognitive function, overall and by resource type. Higher mean household resources were positively associated with cognitive function (ßadj = 0.237 standard deviation [SD] units for the highest vs. lowest quintile of mean resource index score; 95% CI: 0.163-0.312; p-trend<0.0001), as were larger improvements over time in household resources (ßadj = 0.122 SD units for the highest vs. lowest quintile of change in resources; 95% CI: 0.040-0.205; p-trend = 0.001). Results were robust to sensitivity analyses assessing heterogeneity by age and restricting to those with formal education. The findings were largely driven by technological amenities including refrigerators, stoves, telephones, televisions, and vehicles. These amenities may support cognitive function through improving nutrition and providing opportunities for cognitive stimulation through transportation and social contact outside of the home.

12.
BMC Med ; 20(1): 283, 2022 09 09.
Article in English | MEDLINE | ID: mdl-36076202

ABSTRACT

BACKGROUND: High-grade serous carcinoma (HGSC) is the most frequent and lethal type of ovarian cancer. It has been proposed that tubal secretory cells are the origin of ovarian HGSC in women with familial BRCA1/2 mutations. However, the molecular changes underlying malignant transformation remain unknown. METHOD: We performed single-cell RNA and T cell receptor sequencing of tubal fimbriated ends from 3 BRCA1 germline mutation carriers (BRCA1 carriers) and 3 normal controls with no high-risk history (non-BRCA1 carriers). RESULTS: Exploring the transcriptomes of 19,008 cells, predominantly from BRCA1+ samples, we identified 5 major cell populations in the fallopian tubal mucosae. The secretory cells of BRCA1+ samples had differentially expressed genes involved in tumor growth and regulation, chemokine signaling, and antigen presentation compared to the wild-type BRCA1 controls. There are several novel findings in this study. First, a subset of the fallopian tubal secretory cells from one BRCA1 carrier exhibited an epithelial-to-mesenchymal transition (EMT) phenotype, which was also present in the mucosal fibroblasts. Second, we identified a previously unreported phenotypic split of the EMT secretory cells with distinct evolutionary endpoints. Third, we observed increased clonal expansion among the CD8+ T cell population from BRCA1+ carriers. Among those clonally expanded CD8+ T cells, PD-1 was significantly increased in tubal mucosae of BRCA1+ patients compared with that of normal controls, indicating that T cell exhaustion may occur before the development of any premalignant or malignant lesions. CONCLUSION: These results indicate that EMT and immune evasion in normal-looking tubal mucosae may represent early events leading to the development of HGSC in women with BRCA1 germline mutation. Our findings provide a probable molecular mechanism explaining why some, but not all, women with BRCA1 germline mutation present with early development and rapid dissemination of HGSC.


Subject(s)
Fallopian Tube Neoplasms , Ovarian Neoplasms , BRCA1 Protein/genetics , CD8-Positive T-Lymphocytes/pathology , Fallopian Tube Neoplasms/genetics , Fallopian Tube Neoplasms/pathology , Female , Germ Cells/pathology , Humans , Mutation , Ovarian Neoplasms/pathology , Transcriptome/genetics
13.
Nat Commun ; 13(1): 4981, 2022 09 06.
Article in English | MEDLINE | ID: mdl-36068198

ABSTRACT

Lactate is a key metabolite produced from glycolytic metabolism of glucose molecules, yet it also serves as a primary carbon fuel source for many cell types. In the tumor-immune microenvironment, effect of lactate on cancer and immune cells can be highly complex and hard to decipher, which is further confounded by acidic protons, a co-product of glycolysis. Here we show that lactate is able to increase stemness of CD8+ T cells and augments anti-tumor immunity. Subcutaneous administration of sodium lactate but not glucose to mice bearing transplanted MC38 tumors results in CD8+ T cell-dependent tumor growth inhibition. Single cell transcriptomics analysis reveals increased proportion of stem-like TCF-1-expressing CD8+ T cells among intra-tumoral CD3+ cells, a phenotype validated by in vitro lactate treatment of T cells. Mechanistically, lactate inhibits histone deacetylase activity, which results in increased acetylation at H3K27 of the Tcf7 super enhancer locus, leading to increased Tcf7 gene expression. CD8+ T cells in vitro pre-treated with lactate efficiently inhibit tumor growth upon adoptive transfer to tumor-bearing mice. Our results provide evidence for an intrinsic role of lactate in anti-tumor immunity independent of the pH-dependent effect of lactic acid, and might advance cancer immune therapy.


Subject(s)
CD8-Positive T-Lymphocytes , Neoplasms , Animals , Cell Line, Tumor , Glycolysis , Lactic Acid/metabolism , Mice , Neoplasms/pathology , Tumor Microenvironment
14.
JAMA Netw Open ; 5(4): e227060, 2022 04 01.
Article in English | MEDLINE | ID: mdl-35416992

ABSTRACT

Importance: Intensified global economic competition and recent financial crises, including those associated with the COVID-19 pandemic, have contributed to uncertainty about job security. However, little is known about the association of perceived job insecurity with memory function and decline among older adults. Objectives: To investigate the association between perceived job insecurity and subsequent memory function and rate of memory decline among older adults in the US and England. Design, Setting, and Participants: This 10-year prospective population-based cohort study used data from the US Health and Retirement Study (HRS) and the English Longitudinal Study of Ageing (ELSA) collected from 2006 to 2016. Participants included 9538 adults 55 years or older. Data were analyzed from August 1 to 31, 2021. Exposures: Perceived job insecurity (yes vs no) at baseline. Main Outcomes and Measures: Episodic memory z scores at baseline and rate of decline during the follow-up. Results: Among the 9538 study participants, the mean (SD) age at baseline was 60.97 (6.06) years, and 4981 (52.22%) were women. A total of 2320 participants (24.32%) reported job insecurity at baseline (1088 of 3949 [27.55%] in England and 1232 of 5589 [22.04%] in the US). Perceived job insecurity after 55 years of age was associated with lower baseline memory z scores in the fully adjusted model (ß = -0.04 [95% CI, -0.08 to -0.01]) but not with rate of memory decline (ß = 0.01 [95% CI, -0.01 to 0.01]). The association appeared to be stronger in the US than in England (job insecurity × US, ß = -0.05 [95% CI, -0.11 to 0.02]), but the estimate was imprecise, potentially owing to low statistical power. Conclusions and Relevance: The findings of this cohort study suggest that exposure to job insecurity in middle to late life was associated with worse memory function among older adults in the US and England. This association may vary across socioeconomic and social welfare contexts, although future studies with large samples from diverse socioeconomic settings are warranted.


Subject(s)
COVID-19 , Pandemics , Aged , COVID-19/epidemiology , Cohort Studies , Employment , England/epidemiology , Female , Humans , Longitudinal Studies , Male , Memory Disorders/epidemiology , Prospective Studies
15.
Cancer Cell ; 40(4): 353-355, 2022 04 11.
Article in English | MEDLINE | ID: mdl-35334203

ABSTRACT

Mapping the tumor-infiltrating immune subsets to an origin of malignancy or tissue niche is important for designing effective immunotherapies, yet it remains a challenging task. In this issue of Cancer Cell, Liu et al. pieced together this puzzle through a comprehensive single-cell analysis of colorectal cancer patients with liver metastases.


Subject(s)
Colorectal Neoplasms , Liver Neoplasms , Colorectal Neoplasms/pathology , Humans , Liver Neoplasms/pathology , Lymphocytes, Tumor-Infiltrating , Soil
16.
BMJ Open ; 12(2): e054169, 2022 02 21.
Article in English | MEDLINE | ID: mdl-35190431

ABSTRACT

OBJECTIVES: The growth and development of smartphones and eHealth technologies have enabled the potential for extended care hospitals (e-hospitals) in China in order to facilitate the success of a primary healthcare centre (PHC)-based integrated delivery model. Although the adoption of e-hospitals is essential, few studies have directed their research towards understanding the perspectives of healthcare providers. This study aims to identify the current readiness of healthcare providers to adopt e-hospital technologies, determine the factors influencing this adoption and describe the perceived facilitators and barriers in regard to working at e-hospitals. DESIGN: A cross-sectional study conducted in Sichuan, China, between June and September 2019. SETTINGS: Information was collected from healthcare providers who have more than 3 years of work experience from a tertiary hospital, secondary hospital, PHCs and private hospital. PARTICIPANTS: 2298 medical professionals were included in this study. OUTCOME MEASURE: This study included a self-administered questionnaire that was used to assess participants' sociodemographic characteristics, online medical practices, willingness to use e-hospitals and perceived facilitators/barriers to working at e-hospitals. Multivariate regression analysis was performed in order to evaluate the independent factors associated with e-hospital work. RESULTS: Overall, 86.3% had a positive response towards working at e-hospitals. Age (p<0.05), familiarity with e-hospitals (p<0.001) and prior work practices in online healthcare settings (p<0.001) were associated with participants' readiness to work at e-hospitals. Gender, education level, professional level, the tier of their affiliated hospital and workload were not statistically associated. Healthcare providers who had positive attitudes towards e-hospitals considered improved efficiency, patient satisfaction, communication among physicians, increased reputation and income, and alleviated workload to be advantages of adoption. The participants who were unwilling to work at e-hospitals perceived lack of time, insufficient authenticity/reliability and underdeveloped policies as potential barriers. CONCLUSION: Improving operative proficiency in electronic devices, accommodating to work schedules, increasing familiarity with e-hospitals and regulating practices will improve the readiness of healthcare providers to work at e-hospitals.


Subject(s)
COVID-19 , China , Cross-Sectional Studies , Health Personnel , Hospitals , Humans , Patient Satisfaction , Reproducibility of Results , SARS-CoV-2
17.
Int J Equity Health ; 20(1): 162, 2021 07 13.
Article in English | MEDLINE | ID: mdl-34256753

ABSTRACT

BACKGROUND: Distribution of physicians is a key component of access to health care. Although there is extensive research on urban-rural disparities in physician distribution, limited attention has been directed to the heterogeneity across urban areas. This research depicts variations in physician density across over 600 cities in the context of China's rapid urbanization. METHODS: Data came from National Census Surveys and China statistical yearbooks, 2000-2003, and 2010-2013. Cities were characterized in terms of not only administrative level but also geographic regions and urban agglomerations. We analyzed variations in physician supply by applying generalized estimating equations with an ordinal logistic linking function. RESULTS: Although overall physician density increased between 2003 and 2013, with population and socioeconomic attributes adjusted, physician density declined in urban China. On average, urban districts had a higher physician density than county-level cities, but there were regional variations. Cities in urban agglomerations and those outsides did not differ in physician density. CONCLUSION: Despite the reduced inequality between 2003 and 2013, the growth in physician density did not appear to be commensurate with the changes in population health demand. Assessment in physician distribution needs to take into account heterogeneity in population and socioeconomic characteristics.


Subject(s)
Physicians , Urbanization , Aged , China , Cities , Female , Humans , Male , Physicians/supply & distribution , Urban Population
18.
Front Pediatr ; 9: 670887, 2021.
Article in English | MEDLINE | ID: mdl-34277518

ABSTRACT

Aim: To compare the diagnostic values by using transthoracic echocardiography (ECHO) and multi-slice spiral CT coronary angiography (CTCA) for identifying coronary artery thrombosis in children with Kawasaki disease (KD). Methods: Total 97 KD children with coronary artery dilation complications in our hospital from June 2012 to December 2020 were included in the study. CTCA and ECHO were performed after over 1 month of illness. Results: Coronary artery thrombosis was found in 14 out of 97 patients. Among them, 10 were identified as positive by CTCA, 9 were identified as positive by ECHO, and 5 were identified as positive by both CTCA and ECHO. Conclusion: Both CTCA and ECHO can be used to diagnose coronary artery thrombosis. ECHO has advantage in identifying low-density thrombus, and CTCA is better for the clot in distal coronary artery. They can complement each other.

19.
Soc Sci Med ; 283: 114188, 2021 08.
Article in English | MEDLINE | ID: mdl-34225036

ABSTRACT

BACKGROUND: The effects of late-life subjective poverty on brain health are understudied. We aimed to investigate the association between duration of subjective poverty after age 64 and subsequent cognitive function and decline in China. METHODS: Data were from 4118 adults aged ≥64 at baseline in the population-based China Longitudinal Healthy Longevity Survey (CLHLS), 2005-2018. The duration of subjective poverty was measured from self-rated economic status relative to neighbors in 2005, 2008, and 2011 (never; one time point; two or three time points). Cognitive function was assessed by the Chinese Mini-Mental State Exam (CMMSE; range: 0-30) in 2011, 2014, and 2018. We fitted attrition-weighted, multivariable mixed-effects Tobit regression models to examine the relationship between duration of subjective poverty from 2005 to 2011 and subsequent cognitive function and decline from 2011 to 2018. RESULTS: A total of 2675 (64.96%) participants never reported subjective poverty over the period 2005-2011, 930 (22.58%) participants reported subjective poverty at one time point, and 513 (12.46%) reported subjective poverty at two or three time points. Compared to those who never reported subjective poverty, participants experiencing subjective poverty at one time point (ß = -0.95, 95% CI: -1.48 to -0.41) and two or three time points (ß = -2.01; 95% CI: -2.73 to -1.29) had lower CMMSE scores in 2011, indicating a dose-response relationship. Individuals with a longer duration of subjective poverty had a slower rate of decline in CMMSE scores than those never in subjective poverty (ß = 1.44; 95% CI: 0.20 to 2.68 for 2018 X Two or three time points). CONCLUSION: Subjective poverty in late life may have unique and cumulative contributions to cognitive aging among older adults in China. The lower level of initial cognitive function but slower rate of cognitive decline observed for those with greater subjective poverty is consistent with theories of cognitive reserve and empirical evidence from Western settings on other socioeconomic markers.


Subject(s)
Cognitive Dysfunction , Poverty , Aged , China/epidemiology , Cognition , Cognitive Dysfunction/epidemiology , Humans , Longitudinal Studies , Middle Aged
20.
Neurology ; 97(7): e739-e746, 2021 08 17.
Article in English | MEDLINE | ID: mdl-34099525

ABSTRACT

OBJECTIVE: To investigate the relationship between late-life duration of poverty exposure and cognitive function and decline among older adults in China. METHODS: Data were from 3,209 participants ≥64 years of age in the Chinese Longitudinal Healthy Longevity Survey (CLHLS). Duration of poverty, defined according to urban and rural regional standards from the China Statistical Yearbook, was assessed according to annual household income from 2005 to 2011 (never in poverty; one-third of the period in poverty; two-thirds or more of the period in poverty). Cognitive function was measured by the Chinese Mini-Mental State Examination (CMMSE) from 2011 to 2018. We used attrition-weighted, multivariable mixed-effects Tobit regression to examine the association of duration of poverty with cognitive function and rate of decline. RESULTS: A total of 1,162 individuals (36.21%) were never in poverty over the period from 2005 to 2011; 1,172 (36.52%) were in poverty one-third of the period; and 875 (27.27%) were in poverty two-thirds or more of the period. A longer poverty duration was associated with lower subsequent CMMSE scores with a dose-response relationship (one-third vs never in poverty: ß = -0.98; 95% confidence interval -1.61 to -0.35; two-thirds or more vs never in poverty: ß = -1.55; 95% confidence interval -2.29 to -0.81). However, a longer duration of poverty was associated with a slower rate of CMMSE score decline over time from 2011 to 2018. CONCLUSION: These findings provide valuable evidence for the role of cumulative late-life poverty in relation to cognitive health among older adults in a rapidly urbanizing and aging middle-income country. Our findings may support a compensation hypothesis for cognitive reserve in this setting.


Subject(s)
Aging/physiology , Cognition/physiology , Cognitive Dysfunction/physiopathology , Poverty/statistics & numerical data , Aged , Aged, 80 and over , China/epidemiology , Cognitive Dysfunction/epidemiology , Female , Humans , Longitudinal Studies , Male , Mental Status and Dementia Tests , Middle Aged , Time Factors
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