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International Journal of Infectious... Jul 2021To investigate the dynamic characteristics of serological antibodies against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is of much current...
OBJECTIVE
To investigate the dynamic characteristics of serological antibodies against the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which is of much current significance.
METHODS
The dynamic changes and prevalence of immunoglobulin M (IgM) and immunoglobulin G (IgG) antibodies against SARS-CoV-2 were assessed from the time of symptom onset up to 210 days. Antibodies were detected using a chemiluminescence immunoassay.
RESULTS
The average titers and IgG/IgM positivity rates reached a peak within 30 days of symptom onset and then began to decline continuously. Between 180 and 210 days following symptom onset, the titers of IgG and IgM were 43.1 ± 27.0 AU/mL and 4.4 ± 5.2 AU/mL, respectively, while the respective positivity rates were 84.3% and 12.0%. Further statistical analyses revealed that the dynamic changes and prevalence of the SARS-CoV-2 IgG/IgM antibodies were related to age and disease severity, but not to sex. The dynamic changes and the prevalence were similar for both the IgM and the IgG antibodies. Even so, there was a more rapid rate of decline for the IgM antibodies. It was found that an IgG level of 16.33 ± 3.15 AU/mL may represent a threshold value that should act as an alert, as it may indicate that the IgG level will become undetectable within the next 30-60 days.
CONCLUSION
The results provide important information concerning COVID-19 and may be of relevance for diagnosis, treatment, and vaccine development.
Topics: Antibodies, Viral; COVID-19; Humans; Immunoglobulin G; Immunoglobulin M; Prevalence; SARS-CoV-2
PubMed: 33932603
DOI: 10.1016/j.ijid.2021.04.078 -
BMJ Open Apr 2023This study aimed to investigate the prevalence of cognitive frailty among older adults in China. (Meta-Analysis)
Meta-Analysis
OBJECTIVE
This study aimed to investigate the prevalence of cognitive frailty among older adults in China.
DESIGN
Systematic review and meta-analysis.
METHODS
We searched the Cochrane Library, PubMed, Web of Science, Embase, China National Knowledge Infrastructure(CNKI), Wanfang, Chinese Biomedical Literature and Weipu (VIP) databases to collect information on the epidemiology of cognitive frailty among older adults in China. The study period was from the establishment of the database to March 2022. Two researchers independently screened the literature, extracted the data and assessed the risk of bias in the included studies. All statistical analyses were performed using Stata V.15.0.
RESULTS
We screened 522 records, of which 28 met the inclusion criteria. The results of the meta-analysis showed that the prevalence of cognitive frailty among older adults in China was 15%(95%CI (0.13%,0.17%)). The prevalence of cognitive frailty was higher in hospitals and nursing homes than in communities. Moreover, the prevalence of cognitive frailty was higher in women than in men. Furthermore, the prevalence rates of cognitive frailty in North China Hospital, older adults aged≥80 years, and illiterate individuals were 25%, 29%, and 55%, respectively.
CONCLUSIONS
In conclusion, in China, the prevalence of cognitive frailty is higher among older adults, is higher in women than in men, is higher in hospitals and nursing homes than in communities, and is higher in North China than other regions. Moreover, the higher the educational level, the lower the prevalence of cognitive frailty. Multimodal interventions for cognitive frailty, including increased exercise, nutritional support, increased socialisation opportunities and multifactorial strategies, may be effective in preventing cognitive frailty. These findings have important implications for adjusting healthcare and social care systems.
PROSPERO REGISTRATION NUMBER
CRD42023390486.
Topics: Male; Humans; Female; Aged; Frailty; Prevalence; Nursing Homes; China; Cognition
PubMed: 37076151
DOI: 10.1136/bmjopen-2022-066630 -
Reproductive Health Jul 2022Housemaids often experience different types of sexual violence by different perpetrators. Sexual violence against housemaids remains usually concealed as victims cannot... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Housemaids often experience different types of sexual violence by different perpetrators. Sexual violence against housemaids remains usually concealed as victims cannot report such offenses. Except for fragmented studies with varying reports, there is no national prevalence studies conducted on sexual violence among housemaids in Ethiopia. Thus, this systematic review and meta-analysis aimed to determine the pooled prevalence and associated factors of sexual violence amongst housemaids in Ethiopia.
METHODS
A systematic search of PubMed, Embase, Science Direct, HINARI, Scopus, Cochrane Library, and Google Scholar was conducted using relevant search terms. Data were extracted using the Joanna Briggs Institute (JBI) tool. The quality of all selected articles was evaluated using JBI critical appraisal checklist. Data analysis was performed using STATA Version 14 statistical software. Egger's test and funnel plot were used to evaluate publication bias. Heterogeneity was assessed using Cochran's chi-squared test and quantified by I values. A random-effects model was applied during meta-analysis if heterogeneity was exhibited; otherwise, a fixed-effects model was used.
RESULTS
After reviewing 37,849 articles, 8 studies involving 3,324 housemaids were included for this systematic review and meta-analysis. The pooled prevalence of life time sexual violence among housemaids in Ethiopia was 46.26% (95% CI: 24.69, 67.84). The pooled prevalence was 55.43% (95% CI: 26.38, 84.47) for sexual harassment, 39.03% (95% CI: 14.55, 63.52) for attempted rape, and 18.85% (95% CI: 7.51, 30.19) for rape. Sexual violence is more likely among housemaid who previously lived rural residence (AOR = 2.25; 95% CI: 1.41, 3.60), drinks alcohol (AOR = 2.79 95% CI: 1.02, 4.56), and employer alcohol consumption (AOR = 6.01; 95% CI: 1.10, 32.96).
CONCLUSION
This study revealed that the prevalence of sexual violence against housemaids in Ethiopia is high. Of the forms of sexual violence against housemaids, sexual harassment is high. Male employers are the vast majority of perpetrators of their housemaids. Thus, concerned stakeholders should develop and implement interventions that could empower housemaids in their struggle toward the elimination of sexual violence, create awareness for men, control and monitor the implementation of legislation and policies, and prompt punishment of the perpetrators. Systematic review and meta-analysis registration PROSPERO CRD42021160511.
Topics: Cross-Sectional Studies; Ethiopia; Humans; Male; Prevalence; Sex Offenses; Sexual Harassment
PubMed: 35854381
DOI: 10.1186/s12978-022-01470-2 -
Cells Jan 2024Peto's paradox and the epidemiologic observation of the average six degrees of tumor prevalence are studied and hypothetically solved. A simple consideration, Petho's... (Review)
Review
Peto's paradox and the epidemiologic observation of the average six degrees of tumor prevalence are studied and hypothetically solved. A simple consideration, Petho's paradox challenges our intuitive understanding of cancer risk and prevalence. Our simple consideration is that the more a cell divides, the higher the chance of acquiring cancerous mutations, and so the larger or longer-lived organisms have more cells and undergo more cell divisions over their lifetime, expecting to have a higher risk of developing cancer. Paradoxically, it is not supported by the observations. The allometric scaling of species could answer the Peto paradox. Another paradoxical human epidemiology observation in six average mutations is necessary for cancer prevalence, despite the random expectations of the tumor causes. To solve this challenge, game theory could be applied. The inherited and random DNA mutations in the replication process nonlinearly drive cancer development. The statistical variance concept does not reasonably describe tumor development. Instead, the Darwinian natural selection principle is applied. The mutations in the healthy organism's cellular population can serve the species' evolutionary adaptation by the selective pressure of the circumstances. Still, some cells collect multiple uncorrected mutations, adapt to the extreme stress in the stromal environment, and develop subclinical phases of cancer in the individual. This process needs extensive subsequent DNA replications to heritage and collect additional mutations, which are only marginal alone. Still, together, they are preparing for the first stage of the precancerous condition. In the second stage, when one of the caretaker genes is accidentally mutated, the caused genetic instability prepares the cell to fight for its survival and avoid apoptosis. This can be described as a competitive game. In the third stage, the precancerous cell develops uncontrolled proliferation with the damaged gatekeeper gene and forces the new game strategy with binary cooperation with stromal cells for alimentation. In the fourth stage, the starving conditions cause a game change again, starting a cooperative game, where the malignant cells cooperate and force the cooperation of the stromal host, too. In the fifth stage, the resetting of homeostasis finishes the subclinical stage, and in the fifth stage, the clinical phase starts. The prevention of the development of mutated cells is more complex than averting exposure to mutagens from the environment throughout the organism's lifetime. Mutagenic exposure can increase the otherwise random imperfect DNA reproduction, increasing the likelihood of cancer development, but mutations exist. Toxic exposure is more challenging; it may select the tolerant cells on this particular toxic stress, so these mutations have more facility to avoid apoptosis in otherwise collected random mutational states.
Topics: Humans; Prevalence; Biological Evolution; Cell Division; Precancerous Conditions; DNA
PubMed: 38275822
DOI: 10.3390/cells13020197 -
Indian Journal of Dermatology,... 2023Background There are very few population-based studies on the prevalence of eczema among older persons Aims To estimate the prevalence and types of eczema in those aged...
Background There are very few population-based studies on the prevalence of eczema among older persons Aims To estimate the prevalence and types of eczema in those aged 65 years or more in the community and to evaluate the effectiveness of community-based interventions for case finding. Methods In the first stage of this cross-sectional survey, trained health workers of a non-governmental organization surveyed the eligible population and identified persons likely to have eczema. In the second stage, dermatologists examined such persons to ascertain the diagnosis. Statistical analysis was done using Epi Info software version 7. Prevalence of eczema was expressed in percentages. Chi-square test was used for comparing the difference in prevalence of eczema in various age groups and sex. Results Health workers identified 98 persons as possible cases of eczema after interviewing 385 older persons in the community. Among them 95 persons were examined by dermatologists and 44 were confirmed to have eczema (diagnostic accuracy of health workers = 46.3%).Point prevalence of eczema was 11.4% (44/385). Prevalence was similar in males and females. It was greater (18.2 %) among persons aged 81 years or more. Asteatotic eczema, gravitational eczema and lichen simplex chronicus were the more common types of eczema. Limitations: Possible underestimation of the prevalence rates due to limited medical knowledge of health workers; limited facilities for examination and investigations at the medical camps and home visits. Conclusion There appears to be a considerable burden of eczema among older persons in the community. A community-based approach involving non-governmental organizations has the potential to identify cases and offer care close to their homes.
Topics: Male; Female; Humans; Aged; Aged, 80 and over; Cross-Sectional Studies; Prevalence; Eczema; Surveys and Questionnaires; Health Personnel
PubMed: 34491677
DOI: 10.25259/IJDVL_990_19 -
Epidemiologic Reviews Jan 2020Preventing the transition to injection drug use is an important public health goal, as people who inject drugs (PWID) are at high risk for overdose and acquisition of...
Preventing the transition to injection drug use is an important public health goal, as people who inject drugs (PWID) are at high risk for overdose and acquisition of infectious disease. Initiation into drug injection is primarily a social process, often involving PWID assistance. A better understanding of the epidemiology of this phenomenon would inform interventions to prevent injection initiation and to enhance safety when assistance is provided. We conducted a systematic review of the literature to 1) characterize the prevalence of receiving (among injection-naive persons) and providing (among PWID) help or guidance with the first drug injection and 2) identify correlates associated with these behaviors. Correlates were organized as substance use behaviors, health outcomes (e.g., human immunodeficiency virus infection), or factors describing an individual's social, economic, policy, or physical environment, defined by means of Rhodes' risk environments framework. After screening of 1,164 abstracts, 57 studies were included. The prevalence of receiving assistance with injection initiation (help or guidance at the first injection) ranged 74% to 100% (n = 13 estimates). The prevalence of ever providing assistance with injection initiation varied widely (range, 13%-69%; n = 13 estimates). Injecting norms, sex/gender, and other correlates classified within Rhodes' social risk environment were commonly associated with providing and receiving assistance. Nearly all PWID receive guidance about injecting for the first time, whereas fewer PWID report providing assistance. Substantial clinical and statistical heterogeneity between studies precluded meta-analysis, and thus local-level estimates may be necessary to guide the implementation of future psychosocial and sociostructural interventions. Further, estimates of providing assistance may be downwardly biased because of social desirability factors.
Topics: Administration, Intravenous; Blood-Borne Infections; Helping Behavior; Humans; Mortality; Prevalence
PubMed: 33024995
DOI: 10.1093/epirev/mxaa008 -
Ciencia & Saude Coletiva Nov 2023This article aims to evaluate the performance of preconception health indicators according to sociodemographic characteristics among Brazilian women of reproductive age....
This article aims to evaluate the performance of preconception health indicators according to sociodemographic characteristics among Brazilian women of reproductive age. We conducted a descriptive epidemiological study using data from 21,645 and 25,228 women, respectively, who responded the 2013 and 2019 national health surveys, and data for the period 2010 to 2020 derived from the national health system's Department of Informatics (DATASUS). We calculated the prevalence of indicators according to sociodemographic characteristics and statistical significance of differences was measured using Pearson's chi-squared test. Syphilis and HIV incidence rates were also calculated. There was an increase in the prevalence of access to health service indicators (medical and dental consultations and recent Pap smear). However, there was an increase in the prevalence of hypertension, alcohol use, and obesity. The prevalence of use of contraceptive methods and fertility treatment remained stable. Syphilis incidence increased sevenfold between 2010 and 2020. Black/brown women with a low level of education, higher parity, and living in the North or Northeast performed worse for preconception health indicators. Despite the increase in access to health services, performance on preconception health indicators declined and health inequities continued.
Topics: Pregnancy; Humans; Female; Preconception Care; Syphilis; Prevalence; Brazil; Contraception
PubMed: 37971017
DOI: 10.1590/1413-812320232811.16282022 -
BMC Pediatrics Jun 2022Childhood stunting and anemia are on the increase in many resource-constrained settings, without a counter increase in proper feeding practices such as exclusive...
BACKGROUND
Childhood stunting and anemia are on the increase in many resource-constrained settings, without a counter increase in proper feeding practices such as exclusive breastfeeding. The objective of this study was to explore the prevalence of stunting, anemia and exclusive breastfeeding across African countries.
METHODS
Demographic and Health Survey (DHS) data from 39 African countries was analyzed. Data from under 5 children were analyzed. Forest plot was used to determine inequalities in the prevalence of the outcome variables.
RESULTS
The prevalence of stunting was highest in Burundi (56%), Madagascar (50%) and Niger (44%). In addition, Burkina Faso (88%), Mali (82%), Cote d'Ivoire and Guinea (75% each) and Niger (73%) had the highest prevalence of anemia. Furthermore, Burundi (83%), Rwanda (81%) and Zambia (70%) had the highest exclusive breastfeeding. We found statistical significant difference in the prevalence of stunting, anemia and exclusive breastfeeding (p < 0.001). Higher prevalence of stunting and anemia were estimated among the male, rural residents, those having mothers with low education and from poor household wealth.
CONCLUSION
Concerted efforts are required to improve childhood health, survival and proper feeding practice. Reduced stunting and anemia could be achieved through sustained socioeconomic improvement that is shared in equity and equality among the population. Interventions aimed at increasing food availability can also aid in the reduction of hunger, particularly in impoverished communities.
Topics: Anemia; Breast Feeding; Burkina Faso; Child; Female; Growth Disorders; Humans; Infant; Male; Prevalence
PubMed: 35681131
DOI: 10.1186/s12887-022-03395-y -
WMJ : Official Publication of the State... May 2023Initial reports identified preexisting conditions associated with COVID-19 mortality risk. The Centers for Disease Control and Prevention (CDC) 500 Cities Project...
INTRODUCTION
Initial reports identified preexisting conditions associated with COVID-19 mortality risk. The Centers for Disease Control and Prevention (CDC) 500 Cities Project provides prevalence rate estimates at the census tract level for these conditions. The frequency of these individual condition prevalence rates may associate with the census tracts with greater risk of COVID-19 deaths.
OBJECTIVE/RESEARCH QUESTION
Can the census tract-level outcome of Milwaukee County COVID-19 death rates correlate with the census tract-level COVID-19 individual mortality risk condition prevalence rates?
METHODS
This study used the 296 Milwaukee County, Wisconsin census tracts' COVID-19 death rates per 100,000 lives to perform a linear regression with individual COVID-19 mortality risk condition prevalence rates, obtained from the CDC's 500 Cities Project, and a multiple regression with 7 condition prevalence rates. The Milwaukee County Medical Examiner provided census tract identified deaths from COVID-19 from March 2020 through May 2020. Crude death rates for these 3 months per 100,000 population were analyzed in a multiple linear regression versus prevalence rates for these conditions in each census tract.
RESULTS
There were 295 assessable COVID-19-related deaths in Milwaukee County in early 2020. The model of crude death rates showed statistical significance with the condition prevalence rates in Milwaukee County. A regression analysis of each condition's prevalence rate showed no association with crude death rates.
CONCLUSIONS
This study supports a correlation between high COVID-19 mortality rate census tracts and prevalence rate estimates of conditions associated with high individual COVID-19 mortality rates. The study is limited by the small COVID-19 death sample and the use of a single location. The ability to focus COVID-19 health promotion may save future lives if mitigation strategies are applied extensively in these neighborhoods.
Topics: Humans; Prevalence; COVID-19; Residence Characteristics; Wisconsin
PubMed: 37141472
DOI: No ID Found -
Medicine Aug 2015Prevalence estimates of depression in hypertensive patients varied widely in existing studies. We conducted a systematic review and meta-analysis of observational... (Meta-Analysis)
Meta-Analysis Review
Prevalence estimates of depression in hypertensive patients varied widely in existing studies. We conducted a systematic review and meta-analysis of observational studies to summarize the point prevalence of depressive symptoms in adults with hypertension.Comprehensive electronic searches of PubMed, Web of Knowledge, China National Knowledge Internet (CNKI), Wangfang, and Weipu databases were conducted to identify any study in each database published from initial state to November 31, 2014, reporting the prevalence of depression in hypertensive patients. Random-effects model was used to estimate the prevalence of depressive symptoms. We also limited the analyses to studies using clinical interview and prespecified criteria for diagnosis. All statistical calculations were made by using the Stata Version 12.0 (College Station, TX) and Statsdirect Version 2.7.9.We identified 41 studies with a total population of 30,796 in the present meta-analysis. The summarized prevalence of depression among hypertensive patients is 26.8% (95% confidence interval (CI): 21.7%-32.3%). Subgroup analysis shows the following results: for male 24.6%, 95% CI: 14.8%-35.9%, for female 24.4%, 95% CI: 14.6%-35.8%. For China: 28.5% (95% CI: 22.2%-35.3%); for other region (22.1%, 95% CI: 12.1%-34.1%); for community: 26.3% (95% CI: 17.7%-36.0%), for hospital: 27.2% (95% CI: 20.6%-34.5%). Estimated prevalence by interview was 21.3% (95% CI: 14.2%-30.0%); prevalence of depressive symptoms adjudicated by self-rating scales was 29.8% (95% CI: 23.3%-36.7%).The observed heterogeneity in depression prevalence of hypertension may be attributed to differences in method of evaluation. Self-report scales should be cautious of estimating the presence of depression. Thus, interview-defined depression affects approximately one third of hypertensive patients. Effective interventions for depression on patient-centered are needed.
Topics: Adolescent; Adult; Aged; Aged, 80 and over; Depressive Disorder; Female; Humans; Hypertension; Male; Middle Aged; Prevalence; Young Adult
PubMed: 26252317
DOI: 10.1097/MD.0000000000001317