Age Differences In Prevalence Research Articles

Gendered lives, gendered Vulnerabilities: An intersectional gender analysis of exposure to and treatment of schistosomiasis in Pakwach district, Uganda.

Schistosomiasis is a neglected tropical disease (NTD) that is endemic in Uganda, despite several interventions to eliminate it. It is transmitted when people infected with it pass on their waste matter into fresh water bodies used by others, consequently infecting them. Several studies have demonstrated gender and age differences in prevalence of schistosomiasis and NTDs such as lymphatic filariasis and soil transmitted helminths. However, few intersectional gender analysis studies of schistosomiasis have been undertaken. Using the World Health Organisation (WHO)'s intersectional gender analysis toolkit, this study was undertaken to identify which social stratifiers most intersected with gender to influence vulnerability to and access to treatment for schistosomiasis disease, to understand how best to implement interventions against it. This was a qualitative study comprising eight focus group discussions (FGDs) of community members, disaggregated by age, sex and location, and 10 key informant interviews with health care providers and community leaders. The Key informants were selected purposively while the community members were selected using stratified random sampling (to cater for age, sex and location). The data was analysed manually to identity key themes around gender, guided by a gender and intersectionality lens. The study established that while the River Nile provided livelihoods it also exposed the community to schistosomiasis infection. Gender relations played a significant role in exposure to and access to treatment for schistosomiasis. Traditional gender roles determined the activities men and women performed in the private and public spheres, which in turn determined their exposure to schistosomiasis and treatment seeking behaviour. Gender relations also affected access to treatment and decision making over family health care. Men and some women who worked outside the home were reported to prioritise their income earning activities over seeking health care, while women who visited the health facilities more regularly for antenatal care and to take sick children were reported to have higher chance of being tested and treated in time, although this was undermined by the irregular and infrequent provision of praziquantel (PZQ) mass drug administration. These gender relations were further compounded by underdevelopment and limited economic opportunities, insufficient health care services, as well as the respondent's age and location. The study concludes that vulnerability to schistosomiasis disease and treatment occurred within a complex web of gender relations, culture, poverty, limited economic opportunities and insufficient health services delivery, which together undermined efforts to eliminate schistosomiasis. This study recommends the following: a) increased public health campaigns around schistosomiasis prevention and treatment; b) more regular PZQ MDA at home and schools; c) improved health services delivery and integration of services to include vector control; d) prioritising NTDs; e) providing alternative economic activities; and f) addressing negative gender norms that promote social behaviours which negatively influence vulnerability, treatment seeking and decision making for health.

Characteristics of daytime napping and its correlation with chronic diseases in Chinese adults

Objective: To describe the prevalence of daytime nap habit in participants of the China Kadoorie Biobank (CKB) study, across 10 study regions and explore its correlation with prevalence of major chronic diseases. Methods: Participants with a self-reported pre-diagnosis of any cancer at baseline survey were excluded. Logistic regression models were used to analyze the differences in study regions and age distribution of the prevalence daytime nap habit, and its correlation with the prevalence of diabetes, hypertension, coronary heart disease (CHD), stroke, chronic obstructive pulmonary disease (COPD), and chronic liver diseases. Results: Among 510 145 participants, 39.9% had daytime nap habit in summer and 20.8% had daytime nap habit all the year round. Urban-rural differences were observed in the prevalence of summer nap habit and perennial nap habit. Daytime nap in summer was common in rural areas and Suzhou, with prevalence ranged from 32.9% to 73.3%. Haikou and Liuzhou had higher prevalence of perennial nap (60.4% and 63.3%). The proportion of people with daytime nap habit all the year round increased with age (P for trend <0.001), the proportion was highest in those aged 70- years (31.9%). Daytime nap habit in summer was positively correlated with the prevalence of diabetes, hypertension, CHD and chronic liver disease with OR of 1.10 (95%CI: 1.07-1.14), 1.03 (95%CI:1.02-1.05), 1.07 (95%CI: 1.02-1.12) and 1.07 (95%CI:1.00-1.14), respectively. Daytime nap habit all the year round was positively correlated with the prevalence of diabetes, hypertension, CHD, stroke, COPD and chronic liver disease with OR of 1.33 (95%CI: 1.29-1.37), 1.11 (95%CI: 1.09-1.13), 1.39 (95%CI: 1.33-1.45), 1.33 (95%CI: 1.26-1.41), 1.12 (95%CI: 1.08-1.16) and 1.27 (95%CI:1.18-1.37) respectively. Conclusion: There were regional and age differences in prevalence of daytime nap habit among CKB participants. Daytime nap habit, especially daytime nap habit all the year round, was positively correlated with the prevalence of major chronic diseases.

Sex, Race, and Age Differences in Prevalence of Dementia in Medicare Claims and Survey Data.

This study provides the first comparison of trends in dementia prevalence in the U.S. population using 3 different dementia ascertainments/data sources: neuropsychological assessment, cognitive tests, and diagnosis codes from Medicare claims. We used data from the nationally representative Health and Retirement Study and Aging, Demographics, and Memory Study, and a 20% random sample of Medicare beneficiaries. We compared dementia prevalence across the 3 sources by race, gender, and age. We estimated trends in dementia prevalence from 2006 to 2013 based on cognitive tests and diagnosis codes utilizing logistic regression. Dementia prevalence among older adults aged 70 and older in 2004 was 16.6% (neuropsychological assessment), 15.8% (cognitive tests), and 12.2% (diagnosis codes). The difference between dementia prevalence based on cognitive tests and diagnosis codes diminished in 2012 (12.4% and 12.9%, respectively), driven by decreasing rates of cognitive test-based and increasing diagnosis codes-based dementia prevalence. This difference in dementia prevalence between the 2 sources by sex and for age groups 75-79 and 90 and older vanished over time. However, there remained substantial differences across measures in dementia prevalence among blacks and Hispanics (10.9 and 9.8 percentage points, respectively) in 2012. Our results imply that ascertainment of dementia through diagnosis may be improving over time, but gaps across measures among racial/ethnic minorities highlight the need for improved measurement of dementia prevalence in these populations.

Sex and age differences in prevalence and risk factors for prediabetes in Mexican-Americans

AimsOver 1/3 of Americans have prediabetes, while 9.4% have type 2 diabetes. The aim of our study was to estimate the prevalence of prediabetes in Mexican Americans, with known 28.2% prevalence of type 2 diabetes, by age and sex and to identify critical socio-demographic and clinical factors associated with prediabetes. MethodsData were collected between 2004 and 2017 from the Cameron County Hispanic Cohort in Texas. Weighted crude and sex- and age- stratified prevalences were calculated. Survey weighted logistic regression analyses were conducted to identify risk factors for prediabetes. ResultsThe prevalence of prediabetes (32%) was slightly higher than the alarmingly high rate of type 2 diabetes (28.2%). Hispanic men had the highest overall (37.8%) and highest age stratified prevalence of prediabetes. Males had higher odds of prediabetes than females 1.56 (1.19, 2.06), controlling for the effect of family history of diabetes, age, BMI, and high-density lipoprotein. Family history of diabetes was a strong independent risk factor for prediabetes in all men, and in men and women in the age group 40–64 years. Elevated triglycerides (p = 0.003) was an independent risk factor for men and women in the age group 18–39 years. ConclusionsDespite the very high prevalence of type 2 diabetes, prediabetes prevalence among Mexican Americans is only marginally less than national prediabetes rates. This suggests that progression to type 2 diabetes is more rapid and occurs earlier than nationally. Earlier screening and interventions for prediabetes, especially for men, are necessary to slow the transition to diabetes.

Quill mite infestation of rock ptarmigan Lagopus muta (Aves: Phasianidae) in relation to year and host age, sex, body condition, and density

A total of 1209 ptarmigan were examined for Mironovia lagopus, including 721 juvenile birds (ca. 3months old) and 488 adult birds (15months or older). A total of 88 birds or 7.3% (n = 1209, 95% cl 5.9-8.9%) were infested with M. lagopus. There was an age difference in prevalence of infection, and more adults (10.7%, n = 488, 95% cl 8.2-13.7%) than juveniles (5.0%, n = 721, 95% cl 3.6-6.8%) were infested. There was a significant age effect in the mean intensity index, and adult birds had more advanced infestations compared with juvenile birds. There were no significant changes in either the interannual prevalence of infection or the mean intensity index of infection. Of the feather types inspected, there was no age-related difference in selection of feathers, nor was there any preference of mites for any one of the inspected feather types. Body dispersants were all adult females. There was an age-related difference in mean intensities of infection of body dispersants; it was higher in adult birds. The methods used to determine presence or absence of M. lagopus were not 100% accurate especially for juvenile hosts, and this at least partly explains the difference in prevalence among age groups. There was no relationship between host body condition or host density and infection by M. lagopus.

Regional Disparities in China in the Prevalence of Children Who Are Obese or Overweight

China has experienced rapid socioeconomic transitions during the last three decades, which may result in a rising prevalence of overweight and obese children in China. This article aims to fill in the existing knowledge gap by an analysis of the China Health and Nutrition Survey data to study the national prevalence of children who are overweight and obese as well as how the regional disparities and age differences in prevalence have changed between 1989 and 2009.

Gender and age differences in prevalence and incidence of child sexual abuse in Croatia

AimTo examine age and gender differences in the prevalence and incidence of child sexual abuse, the level of acquaintance of the child and the perpetrator, and correlations between experiencing family violence and sexual abuse on a nationally representative sample of 11, 13, and 16 years old children.MethodA probabilistic stratified cluster sample included 2.62% of the overall population of children aged 11 (n = 1223), 13 (n = 1188), and 16 (n = 1233) from 40 primary and 29 secondary schools. A modified version of ISPCAN Child Abuse Screening Tool – Children's Version was used. Five items referred to child sexual abuse (CSA) for all age groups.ResultsIn Croatia, 10.8% of children experienced some form of sexual abuse (4.8% to 16.5%, depending on the age group) during childhood and 7.7% of children experienced it during the previous year (3.7% to 11.1%, depending on the age group). Gender comparison showed no difference in the prevalence of contact sexual abuse, whereas more girls than boys experienced non-contact sexual abuse. Correlations between sexual abuse and physical and psychological abuse in the family were small, but significant.ConclusionComparisons with international studies show that Croatia is a country with a low prevalence of CSA. The fact that the majority of perpetrators of sexual abuse are male and female peers indicates the urgent need to address risks of sexual victimization in the health education of children.

Prevalence and Correlates of Depression in Older Koreans: Comparison of Young-old and Old-old

Purpose: This study was conducted to investigate the prevalence and correlates of depression among community-dwelling older adults (young-old vs old-old) in Korea. Methods: Data on 11,250 older adults aged 65 or above, from the 2008 National Elderly Survey, were analyzed. Results: Prevalence rate for depression was greater in old-old people (47.2%) than young-old people (24.7%). The logistic regression analysis revealed that gender, education, socioeconomic status (SES), living place, spouse, regular exercise, perceived health status, number of chronic disease, activity of daily living (ADL), instrumental activity of daily living (IADL), and cognitive function were significantly associated with depression in the young-old. However, in old-old people, education, SES, living status, religion, regular exercise, perceived health status, number of chronic disease, pain, ADL, IADL, and cognitive function were associated with depression. Conclusion: The findings indicate that there are age differences in prevalence and correlates of depression in older Koreans. Therefore, age differences should be considered in studying and developing interventions for depression in older adults.

Characterization of widespread canine leishmaniasis among wild carnivores from Spain

Visceral Leishmaniasis (VL) is an emerging zoonotic parasitic disease caused by Leishmania infantum in Mediterranean countries, with sand flies ( Phlebotomus spp.) as vectors and dogs as the main domestic reservoir. The role of wild carnivores in the epidemiology of leishmaniasis is still controversial. In order to determine the prevalence of natural infection with L. infantum in wild carnivores from Spain, we analyzed 217 samples by PCR and western blotting and used restriction fragment length polymorphism (RFLP) to compare the patterns present in wild carnivores with those of domestic dogs from the same areas. DNA of the parasite was detected in spleen or blood samples from 35 (16.12%) analyzed wild carnivores, including 8 of 39 (20.5%) wolves ( Canis lupus), 23 of 162 (14.1%) foxes ( Vulpes vulpes), 2 of 7 (28.6%) Egyptian mongooses ( Herpestes ichneumon), 1 of 4 genets ( Geneta geneta), and 1 of 4 Iberian lynxes ( Lynx pardinus). No significant sex or age differences in prevalence were observed in wolves and foxes ( P > 0.05), but there was a significant difference among regions in foxes ( P < 0.05). A total of 12 PCR–RFLP patterns were found in foxes, 6 in wolves, 4 in dogs, 2 in Egyptian mongooses and 1 in lynx and genet. RFLP patterns differed between dogs and foxes in the two areas where they could be compared. This is the first study of canine leishmaniasis in wild canids and other carnivores from different regions of Spain by PCR. The prevalence of infection indicates the existence of natural infection in apparently healthy wild carnivore populations, and our results are suggestive of a sylvatic cycle independent of dogs.

The care of patients with ischaemic heart disease from a gender perspective

In summary, there are gender and age differences in prevalence, prognosis and manifestation of cardiovascular disease, a phenomenon which has been known for a long time. Nevertheless, it is only since the end of the 1980s that this has been generally discussed and that research has been commenced with specific reference to female coronary artery disease, not only in Sweden but internationally as well. The reason for this gender difference is not known, but it has been suggested that women are cared for and treated differently. In recent years, reports have been received from different centres which indicate that there are gender differences in the use of diagnostic and therapeutic measures in cardiovascular disease. Because of this gender difference in prognosis, investigation and treatment, special measures need to be applied in the care of female cardiovascular patients. It is also very important that randomized studies include a sufficient number of women in order to be able to answer gender-specific questions. The good prognosis for women with angina shown in the Framingham study most likely reflected a high prevalence of women with chest pain originating from disease other than that affecting the coronary arteries. This created the impression that women tolerated angina better; thus, angina in women has been given less attention. It is likely that this has led to incorrect decisions concerning investigation and treatment alternatives, resulting in an inability to identify the high-risk woman in time. When she is finally admitted to proper care, she is older, has concomitant diseases and revascularization often has to be performed at an acute, unstable stage, which leads to higher mortality and morbidity in connection with the intervention. This phenomenon has been described as the so-called 'Yentl syndrome' i.e. a woman has to masquerade as a man in order to receive the same treatment. More medical research needs to be done on women's health to come to terms with this problem. Hitherto, major efforts have been made to obtain homogeneous groups in research studies, which is why there are lots of results containing data on middle-aged white men. Even in tests on rats the females are excluded. The results of studies performed exclusively on men cannot be generalized to apply to women without evidence that the results can be used safely and effectively on both sexes. Research on health problems that are common to both sexes must include both men and women, preferably of all ages. It is also important to point out that unnecessarily restrictive inclusion criteria diminish the ability to generalize the results. Moreover, the chance increases of being able to detect a difference in the effects of treatment in a population with an increased risk, such as the elderly and women with a high frequency of recurring coronary artery disease. There are sill many questions to be answered before we can treat women with coronary artery disease properly.

An Epidemiological Study of Disorders in Late Childhood and Adolescence—I. Age‐ and Gender‐Specific Prevalence

Developmental aspects of psychiatric disorders may be inferred from patterns of age differences in prevalence. Age-specific prevalences are provided for nine disorders in a general population sample of ages 10-20. Age and gender patterns for several disorders suggest developmental stage-associated risks. These include oppositional disorder in both genders and conduct disorder and major depression in girls. Major depression shows a pattern suggestive of a role for the onset of puberty. The prevalence of one or more disorders did not differ by age or gender. However, the pattern of specific diagnoses varied greatly by both age and gender.

Epidemiological approaches to developmental psychopathology.

Developmental psychopathology as a research approach draws on both developmental and psychopathologic perspectives to tackle questions about causal mechanisms. Developmental perspectives are discussed in terms of the implications that flow from age differences in prevalence, age trends in remission of disorders, developmental appropriateness of psychiatric conditions, continuities and discontinuities in psychopathology between childhood and adult life, and age differences in the effects of psychiatric risk factors. Psychopathologic perspectives are considered in terms of continuities and discontinuities between normality and pathology and the contrasts between pervasive and situation-specific disorders, and by the differences between single variables and behavioral composites. The use of epidemiological data to examine causal processes is discussed, with attention to the need to consider development in its social context and to examine indirect, as well as direct, causal chains of connection.

The serologic and cultural prevalence of Leptospira interrogans serovar balcanica in possums (Trichosurus vulpecula) in New Zealand.

In a serologic and cultural survey of 127 brush-tailed possums (Trichosurus vulpecula) occupying pasture land in New Zealand, leptospires of the Hebdomadis serogroup were obtained from 48 (38%) of the animals sampled. Eight isolates were identified by cross-absorption agglutin ation studies as being Leptospira interrogans serovar balcanica. There was a marked age difference in prevalence with 41 positive cultures from 64 mature adults (64%) and no recoveries being made from juveniles. Isolation of leptospires was aided by the use of a new technique involving the homogenation of whole kidneys in gamma sterilized plastic bags in a "Coleworth Stomacher". The use of this apparatus allowed the processing of whole kidneys and the technique was efficient in both the recovery of leptospires and the prevention of contamination. In view of the fact that serovar balcanica has been recorded previously only in East Europe in man, cattle and pigs, the high prevalence of infection in a wild animal population in New Zealand is an interesting development in the world distribution of this serovar.

Mosquito-borne infections in Fiji. II. Arthropod-borne virus infections.

Surveys of arbovirus activity in Fiji were conducted over a 10-year period from December 1959 to December 1969. No arboviruses were isolated from over 200,000 mosquitoes, 9000 ticks, or 575 serum samples. Eight thousand human and 1117 bird, bat and animal sera were tested for haemagglutination-inhibiting arbovirus antibody using a variety of group A, group B and Bunyamwera group antigens. Only a small number of low-titre reactions were found among the non-human sera, but 14% of all human sera were found to contain Group B antibody. The antibody prevalence increased with increasing age, from less than 1% for persons born since 1950, to 70% for persons born before 1900. The age differences in prevalence could be used to estimate the time and size of previous epidemics. Differences were found in antibody prevalence between the sexes, between ethnic groups and between persons from different regions. These differences could be explained in terms of climate, location and custom.Historical and serological evidence both suggest that all the antibody detected was due to past exposure to dengue virus. The very high proportion of the population with no dengue antibody makes Fiji a high-risk area for a further dengue epidemic. Dengue virus is known to be active in the Pacific and South-East Asia.