共查询到20条相似文献,搜索用时 15 毫秒
1.
In response to the Surgeon General's request for more research on racial disparities in mental health care, especially research that includes high-need populations (e.g., the homeless, incarcerated, children in foster care, and substance abusers), we examined racial disparities in the provision of mental health counseling, psychotherapy, and pharmacotherapy in hospital outpatient settings using nationally representative data from the 1997 National Hospital Ambulatory Medical Care Survey (NHAMCS). After controlling for diagnosis and other factors, we found that African Americans were less likely than whites to receive mental health counseling and psychotherapy, but more likely than whites to receive pharmacotherapy. We also found that substance abuse clinics were more likely than primary care and specialty mental health clinics to provide mental health counseling and psychotherapy. However, specialty mental health clinics were the only clinics to provide pharmacotherapy. Future research should examine racial disparities in a variety of settings, controlling for diagnosis as well as other factors. 相似文献
2.
Scherezade K. Mama Yisheng Li Karen Basen-Engquist Rebecca E. Lee Deborah Thompson David W. Wetter Nga T. Nguyen Lorraine R. Reitzel Lorna H. McNeill 《PloS one》2016,11(4)
Resource-poor social environments predict poor health, but the mechanisms and processes linking the social environment to psychological health and well-being remain unclear. This study explored psychosocial mediators of the association between the social environment and mental health in African American adults. African American men and women (n = 1467) completed questionnaires on the social environment, psychosocial factors (stress, depressive symptoms, and racial discrimination), and mental health. Multiple-mediator models were used to assess direct and indirect effects of the social environment on mental health. Low social status in the community (p < .001) and U.S. (p < .001) and low social support (p < .001) were associated with poor mental health. Psychosocial factors significantly jointly mediated the relationship between the social environment and mental health in multiple-mediator models. Low social status and social support were associated with greater perceived stress, depressive symptoms, and perceived racial discrimination, which were associated with poor mental health. Results suggest the relationship between the social environment and mental health is mediated by psychosocial factors and revealed potential mechanisms through which social status and social support influence the mental health of African American men and women. Findings from this study provide insight into the differential effects of stress, depression and discrimination on mental health. Ecological approaches that aim to improve the social environment and psychosocial mediators may enhance health-related quality of life and reduce health disparities in African Americans. 相似文献
3.
Theresa S. Betancourt Robert T. Brennan Patrick Vinck Tyler J. VanderWeele Dayo Spencer-Walters Joshua Jeong Adeyinka M. Akinsulure-Smith Phuong Pham 《PLoS medicine》2016,13(8)
BackgroundLittle attention has been paid to potential relationships between mental health, trauma, and personal exposures to Ebola virus disease (EVD) and health behaviors in post-conflict West Africa. We tested a conceptual model linking mental health and trauma to EVD risk behaviors and EVD prevention behaviors.ConclusionsIn post-conflict settings, past war trauma and mental health problems are associated with health behaviors related to combatting EVD. The associations between war trauma and both EVD risk behaviors and EVD prevention behaviors may be mediated through two key mental health variables: depression and PTSD symptoms. Considering the role of mental health in the prevention of disease transmission may help fight continuing and future Ebola outbreaks in post-conflict Sierra Leone. This sample is specific to Freetown and the Western Area and may not be representative of all of Sierra Leone. In addition, our main outcomes as well as personal EVD exposure, war exposures, and mental health predictors rely on self-report, and therefore raise the possibility of common methods bias. However, the findings of this study may be relevant for understanding dynamics related to EVD and mental health in other major capital cities in the EVD-affected countries of West Africa. 相似文献
4.
Lori E. Ross Greta R. Bauer Melissa A. MacLeod Margaret Robinson Jenna MacKay Cheryl Dobinson 《PloS one》2014,9(8)
Research has shown that bisexuals have poorer health outcomes than heterosexuals, gays, or lesbians, particularly with regard to mental health and substance use. However, research on bisexuals is often hampered by issues in defining bisexuality, small sample sizes, and by the failure to address age differences between bisexuals and other groups or age gradients in mental health. The Risk & Resilience Survey of Bisexual Mental Health collected data on 405 bisexuals from Ontario, Canada, using respondent-driven sampling, a network-based sampling method for hidden populations. The weighted prevalence of severe depression (PHQ-9≥20) was 4.7%, possible anxiety disorder (OASIS≥8) was 30.9%, possible post-traumatic stress disorder (PCL-C≥50) was 10.8%, and past year suicide attempt was 1.9%. With respect to substance use, the weighted prevalence of problem drinking (AUDIT≥5) was 31.2%, and the weighted prevalence of illicit polydrug use was 30.5%. Daily smoking was low in this sample, with a weighted prevalence of 7.9%. Youth (aged 16–24) reported significantly higher weighted mean scores on depression and post-traumatic stress disorder, and higher rates of past year suicidal ideation (29.7% vs. 15.2%) compared with those aged 25 and older. The burden of mental health and substance use among bisexuals in Ontario is high relative to population-based studies of other sexual orientation groups. Bisexual youth appear to be at risk for poor mental health. Additional research is needed to understand if and how minority stress explains this burden. 相似文献
5.
Yukari Yokoyama Kotaro Otsuka Norito Kawakami Seiichiro Kobayashi Akira Ogawa Kozo Tannno Toshiyuki Onoda Yumi Yaegashi Kiyomi Sakata 《PloS one》2014,9(7)
Mental health is one of the most important issues facing disaster survivors. The purpose of this study is to determine the prevalence and correlates of mental health problems in survivors of the Great East Japan Earthquake and Tsunami at 6–11 months after the disaster. The questionnaire and notification were sent to the survivors in three municipalities in the Tohoku area of the Northern part of Honshu, Japan’s largest island, between September 2011 and February 2012. Questionnaires were sent to 12,772, 11,411, and 18,648 residents in the Yamada, Otsuchi, and Rikuzentakata municipalities, respectively. Residents were asked to bring the completed questionnaires to their health check-ups. A total of 11,124 or (26.0%) of them underwent health check-ups, and 10,198 were enrolled. We excluded 179 for whom a K6 score was missing and two who were both 17 years of age, which left 10,025 study participants (3,934 male and 6,091 female, mean age 61.0 years). K6 was used to measure mental health problems. The respondents were classified into moderate (5–12 of K6) and serious mental health problems (13+). A total of 42.6% of the respondents had moderate or serious mental health problems. Multivariate analysis showed that women were significantly associated with mental health problems. Other variables associated with mental health problems were: younger male, health complaints, severe economic status, relocations, and lack of a social network. An interaction effect of sex and economic status on severe mental health problems was statistically significant. Our findings suggest that mental health problems were prevalent in survivors of the Great East Japan Earthquake and Tsunami. For men and women, health complaints, severe economic status, relocations, and lack of social network may be important risk factors of poor mental health. For men, interventions focusing on economic support may be particularly useful in reducing mental health problems after the disaster. 相似文献
6.
We examined gender differences in mental health outcomes during and post-recession versus pre-recession. We utilized 2005-2006, 2008-2009, and 2010-2011 data from the Medical Expenditure Panel Survey. Females had lower odds of depression diagnoses during and post-recession and better mental health during the recession, but higher odds of anxiety diagnoses post-recession. Males had lower odds of depression diagnoses and better mental health during and post-recession and lower Kessler 6 scores post-recession. We conducted stratified analyses, which confirmed that the aforementioned findings were consistent across the four different regions of the U.S., by employment status, income and health care utilization. Importantly, we found that the higher odds of anxiety diagnoses among females after the recession were mainly prominent among specific subgroups of females: those who lived in the Northeast or the Midwest, the unemployed, and those with low household income. Gender differences in mental health in association with the economic recession highlight the importance of policymakers taking these differences into consideration when designing economic and social policies to address economic downturns. Future research should examine the reasons behind the decreased depression diagnoses among both genders, and whether they signify decreased mental healthcare utilization or increased social support and more time for exercise and leisure activities. 相似文献
7.
M. Robert Harris 《The Western journal of medicine》1966,104(6):454-457
The distinctive feature of a community mental health program is the comprehensive responsibility assumed for the mental health as well as the psychiatric needs of a particular area. Not only must programs provide psychiatric services but, in addition, they are concerned with assessing the community''s psychiatric and mental health status; with preventive services; with mental health education; with contributions directed toward the solution of certain social problems; as well as with a variety of other indirect services, including, importantly, mental health consultation. This form of consultation can support and help the large number of community care-takers whose contribution is vital to the promotion of community mental health. 相似文献
8.
目的:探讨陆军青年军人心理素质与人格、心理健康的关系。方法:整群抽取陆军青年官兵881名,采用军人心理素质量表、艾森克人格问卷(EPQ)、症状自评量表(SCL-90)进行测评,进行方差分析和相关分析。结果:(1)陆军青年军人心理素质各因子分及总分与EPQ人格问卷中的E分呈显著正相关(p<0.01);与N分、P分呈显著负相关(p<0.01)。高、中、低心理素质水平军人E、P、N得分比较有显著差异(p<0.05),表现为在E量表得分上高心理素质组>中等心理素质组>低心理素质组;而在P、N量表得分上则反之。(2)陆军青年军人心理素质各因子分及总分均与SCL-90各因子分和总均分呈显著负相关(p<0.01)。高、中、低心理素质水平军人SCL-90各因子得分比较有显著差异(p<0.05),表现为低心理素质组>中等心理素质组>高心理素质组。结论:陆军青年军人心理素质与心理健康密切相关,心理素质越高,其心理健康水平也越高。 相似文献
9.
Introduction
The lack of trained mental health workers is a primary contributor to the mental health treatment gap worldwide. Despite the great need to recruit and retain mental health workers in low-income countries, little is known about how these workers perceive their jobs and what drives them to work in mental health care. Using qualitative interviews, we aimed to explore factors motivating mental health workers in order to inform interventions to increase recruitment and retention.Methods
We conducted 28 in-depth, open-ended interviews with staff in Ghana’s three public psychiatric hospitals. We used the snowballing method to recruit participants and the constant comparative method for qualitative data analysis, with multiple members of the research team participating in data coding to enhance the validity and reliability of the analysis. The use of qualitative methods allowed us to understand the range and depth of motivating and demotivating factors.Results
Respondents described many factors that influenced their choice to enter and remain in mental health care. Motivating factors included 1) desire to help patients who are vulnerable and in need, 2) positive day-to-day interactions with patients, 3) intellectual or academic interest in psychiatry or behavior, and 4) good relationships with colleagues. Demotivating factors included 1) lack of resources at the hospital, 2) a rigid supervisory hierarchy, 3) lack of positive or negative feedback on work performance, and 4) few opportunities for career advancement within mental health.Conclusions
Because many of the factors are related to relationships, these findings suggest that strengthening the interpersonal and team dynamics may be a critical and relatively low cost way to increase worker motivation. The data also allowed us to highlight key areas for resource allocation to improve both recruitment and retention, including risk pay, adequate tools for patient care, improved hospital work environment, and stigma reduction efforts. 相似文献10.
目的:探讨陆军青年军人心理素质与人格、心理健康的关系。方法:整群抽取陆军青年官兵881名,采用军人心理素质量袁、艾森克人格问卷(EPQ)、症状自评量表(SCL-90)进行测评,进行方差分析和相关分析。结果:(1)陆军青年军人心理素质各因子分及总分与EPQ人格问卷中的E分呈显著正相关(p〈0.01);与N分、P分呈显著负相关(p〈0.01)。高、中、低心理素质水平军人E、P、N得分比较有显著差异(p〈0.05),表现为在E量表得分上高心理素质组〉中等心理素质组〉低心理素质组;而在P、N量表得分上则反之。(2)陆军青年军人心理素质各因子分及总分均与SCL-90各因子分和总均分呈显著负相关(p〈0.01)。高、中、低心理素质水平军人SCL-90各因子得分比较有显著差异(p〈0.05),表现为低心理素质组〉中等心理素质组〉高心理素质组。结论:陆军青年军人心理素质与心理健康密切相关,心理素质越高,其心理健康水平也越高。 相似文献
11.
Background
Social rhythm refers to the regularity with which one engages in social activities throughout the week, and has established links with bipolar disorder, as well as some links with depression and anxiety. The aim of the present study is to examine social rhythm and its relationship to various aspects of health, including physical health, negative mental health, and positive mental health.Method
Questionnaire data were obtained from a large-scale multi-national sample of 8095 representative participants from the U.S., Russia, and Germany.Results
Results indicated that social rhythm irregularity is related to increased reporting of health problems, depression, anxiety, and stress. In contrast, greater regularity is related to better overall health state, life satisfaction, and positive mental health. The effects are generally small in size, but hold even when controlling for gender, marital status, education, income, country, and social support. Further, social rhythm means differ across Russia, the U.S., and Germany. Relationships with mental health are present in all three countries, but differ in magnitude.Conclusions
Social rhythm irregularity is related to mental health in Russia, the U.S., and Germany. 相似文献12.
Fiona J. Charlson Sandra Diminic Crick Lund Louisa Degenhardt Harvey A. Whiteford 《PloS one》2014,9(10)
The world is undergoing a rapid health transition, with an ageing population and disease burden increasingly defined by disability. In Sub-Saharan Africa the next 40 years are predicted to see reduced mortality, signalling a surge in the impact of chronic diseases. We modelled these epidemiological changes and associated mental health workforce requirements. Years lived with a disability (YLD) predictions for mental and substance use disorders for each decade from 2010 to 2050 for four Sub-Saharan African regions were calculated using Global Burden of Disease 2010 study (GBD 2010) data and UN population forecasts. Predicted mental health workforce requirements for 2010 and 2050, by region and for selected countries, were modelled using GBD 2010 prevalence estimates and recommended packages of care and staffing ratios for low- and middle-income countries, and compared to current staffing from the WHO Mental Health Atlas. Significant population growth and ageing will result in an estimated 130% increase in the burden of mental and substance use disorders in Sub-Saharan Africa by 2050, to 45 million YLDs. As a result, the required mental health workforce will increase by 216,600 full time equivalent staff from 2010 to 2050, and far more compared to the existing workforce. The growth in mental and substance use disorders by 2050 is likely to significantly affect health and productivity in Sub-Saharan Africa. To reduce this burden, packages of care for key mental disorders should be provided through increasing the mental health workforce towards targets outlined in this paper. This requires a shift from current practice in most African countries, involving substantial investment in the training of primary care practitioners, supported by district based mental health specialist teams using a task sharing model that mobilises local community resources, with the expansion of inpatient psychiatric units based in district and regional general hospitals. 相似文献
13.
Rienke Bannink Suzanne Broeren Petra M. van de Looij – Jansen Frouwkje G. de Waart Hein Raat 《PloS one》2014,9(4)
Purpose
To examine whether traditional and cyber bullying victimization were associated with adolescent''s mental health problems and suicidal ideation at two-year follow-up. Gender differences were explored to determine whether bullying affects boys and girls differently.Methods
A two-year longitudinal study was conducted among first-year secondary school students (N = 3181). Traditional and cyber bullying victimization were assessed at baseline, whereas mental health status and suicidal ideation were assessed at baseline and follow-up by means of self-report questionnaires. Logistic regression analyses were conducted to assess associations between these variables while controlling for baseline problems. Additionally, we tested whether gender differences in mental health and suicidal ideation were present for the two types of bullying.Results
There was a significant interaction between gender and traditional bullying victimization and between gender and cyber bullying victimization on mental health problems. Among boys, traditional and cyber bullying victimization were not related to mental health problems after controlling for baseline mental health. Among girls, both traditional and cyber bullying victimization were associated with mental health problems after controlling for baseline mental health. No significant interaction between gender and traditional or cyber bullying victimization on suicidal ideation was found. Traditional bullying victimization was associated with suicidal ideation, whereas cyber bullying victimization was not associated with suicidal ideation after controlling for baseline suicidal ideation.Conclusions
Traditional bullying victimization is associated with an increased risk of suicidal ideation, whereas traditional, as well as cyber bullying victimization is associated with an increased risk of mental health problems among girls. These findings stress the importance of programs aimed at reducing bullying behavior, especially because early-onset mental health problems may pose a risk for the development of psychiatric disorders in adulthood. 相似文献14.
Objectives
A period of economic recession may be particularly difficult for people with mental health problems as they may be at higher risk of losing their jobs, and more competitive labour markets can also make it more difficult to find a new job. This study assesses unemployment rates among individuals with mental health problems before and during the current economic recession.Methods
Using individual and aggregate level data collected from 27 EU countries in the Eurobarometer surveys of 2006 and 2010, we examined changes in unemployment rates over this period among individuals with and without mental health problems.Results
Following the onset of the recession, the gap in unemployment rates between individuals with and without mental health problems significantly widened (odds ratio: 1.12, 95% confidence interval: 1.03, 1.34). This disparity became even greater for males, and individuals with low levels of education. Individuals with mental health problems living in countries with higher levels of stigmatizing attitudes regarding dangerousness of people with mental illness were more vulnerable to unemployment in 2010, but not 2006. Greater agreement that people with mental health problems have themselves to blame, was associated with lower likelihood of unemployment for individuals with and without mental health problems.Conclusion
These findings study suggest that times of economic hardship may intensify social exclusion of people with mental health problems, especially males and individuals with lower education. Interventions to combat economic exclusion and to promote social participation of individuals with mental health problems are even more important during times of economic crisis, and these efforts should target support to the most vulnerable groups. 相似文献15.
Background
On April 14, 2010, an earthquake registering 7.1 on the Richter scale shook Qinghai Province in southwest China. The earthquake caused numerous casualties and much damage. The epicenter, Yushu County, suffered the most severe damage. As a part of the psychological relief work, the present study evaluated the mental health statuses of the people affected and identified the mental disorder risk factors related to earthquakes.Methods
Five hundred and five earthquake survivors living in Yushu County were investigated 3–4 months after the earthquake. Participant demographic data including gender, age, marital status, ethnicity, educational level, and religious beliefs were collected. The Earthquake-Specific Trauma Exposure Indicators assessed the intensity of exposure to trauma during the earthquake. The PTSD Checklist-Civilian version (PCL-C) and the Hopkins Symptoms Checklist-25 (HSCL-25) assessed the symptoms and prevalence rates of probable Posttraumatic Stress Disorder (PTSD) as well as anxiety and depression, respectively. The Perceived Social Support Scale (PSSS) evaluated subjective social support.Results
The prevalence rates of probable PTSD, anxiety, and depression were 33.7%, 43.8% and 38.6%, respectively. Approximately one fifth of participants suffered from all three conditions. Individuals who were female, felt initial fear during the earthquake, and had less social support were the most likely to have poor mental health.Conclusions
The present study revealed that there are serious mental problems among the hard–hit survivors of the Yushu earthquake. Survivors at high risk for mental disorders should be specifically considered. The present study provides useful information for rebuilding and relief work. 相似文献16.
Background
Despite a history of conflicts and widespread human rights violation in sub-Saharan Africa, little is known about the prevalence of interpersonal violence among the population in this region. Evidence from high-income countries suggests that exposure to violence has mental health consequences and violence also has associations with experiences of sexual coercion.Aims
This study sought to investigate the prevalence of physical and perceived threats of violence among university students in Uganda and to assess the possible relationship between such violence, sexual coercion, and symptoms of anxiety, depression, and psychoticism, respectively.Method
In 2005, 980 Ugandan university students responded to a self-administered questionnaire (response rate 80%) that assessed socio-demographic factors, social capital, importance of religion, mental health, experience of violence and sexual coercion, and sexual behaviour factors. Logistic regression analysis was applied as the main analytical tool.Results
Of those who responded, 28% reported perceived threats/threats of violence and 10% exposure to actual physical violence over the previous 12 months, with no significant gender differences in exposure history. Exposure to violence was significantly associated with the experience of sexual coercion among both males and females. Sexual coercion and threats/threats of violence were both significantly associated with poor mental health in males and females, but only males showed a strong association between exposure to physical violence and poor mental health.Conclusion
The current study suggests that in terms of general exposure, both males and females in the study population are equally exposed to sexual coercion and interpersonal violence, and both male and female students show generally similar mental health effects of exposure to such violence. The prevalence of interpersonal violence found in our study population may have long-term negative health implications. Our findings may serve as a baseline for interventions and continuing research aimed at preventing interpersonal violence. 相似文献17.
Background
There is very limited evidence on the health consequences of human trafficking. This systematic review reports on studies investigating the prevalence and risk of violence while trafficked and the prevalence and risk of physical, mental, and sexual health problems, including HIV, among trafficked people.Methods and Findings
We conducted a systematic review comprising a search of Medline, PubMed, PsycINFO, EMBASE, and Web of Science, hand searches of reference lists of included articles, citation tracking, and expert recommendations. We included peer-reviewed papers reporting on the prevalence or risk of violence while trafficked and/or on the prevalence or risk of any measure of physical, mental, or sexual health among trafficked people. Two reviewers independently screened papers for eligibility and appraised the quality of included studies. The search identified 19 eligible studies, all of which reported on trafficked women and girls only and focused primarily on trafficking for sexual exploitation. The review suggests a high prevalence of violence and of mental distress among women and girls trafficked for sexual exploitation. The random effects pooled prevalence of diagnosed HIV was 31.9% (95% CI 21.3%–42.4%) in studies of women accessing post-trafficking support in India and Nepal, but the estimate was associated with high heterogeneity (I 2 = 83.7%). Infection prevalence may be related as much to prevalence rates in women''s areas of origin or exploitation as to the characteristics of their experience. Findings are limited by the methodological weaknesses of primary studies and their poor comparability and generalisability.Conclusions
Although limited, existing evidence suggests that trafficking for sexual exploitation is associated with violence and a range of serious health problems. Further research is needed on the health of trafficked men, individuals trafficked for other forms of exploitation, and effective health intervention approaches. Please see later in the article for the Editors'' Summary 相似文献18.
Rob Whitley 《Culture, medicine and psychiatry》2014,38(3):499-511
The current supremacy of the ‘bio-bio-bio’ model within the discipline of psychiatry has progressively marginalized social science approaches to mental health. This situation begs the question, what role is there for the anthropology of mental health? In this essay, I contend that there are three essential roles for the anthropology of mental health in an era of biological psychiatry. These roles are to (i) provide a meaningful critique of practices, beliefs, and movements within current psychiatry; (ii) illuminate the socio-cultural, clinical, and familial context of suffering and healing regarding emotional distress/mental illness; and (iii) act as a catalyst for positive change regarding healing, services and provisions for people with emotional distress/mental illness. My argument is unified by my contention that a credible anthropology of mental health intending to make a societal contribution should offer no opposition without proposition. In other words, any critique must be counter-balanced by the detailing of solutions and proposals for change. This will ensure that the anthropology of mental health continues to contribute critical knowledge to the understanding of mental suffering, distress, and healing. Such social and cultural approaches are becoming especially important given the widespread disenchantment with an increasingly dominant biological psychiatry. 相似文献
19.
Introduction
Much research on the health and well-being of third level students is focused on poor mental health leading to a dearth of information on positive mental health and well-being. Recently, the Warwick Edinburgh Mental Well-being scale (WEMWBS) was developed as a measurement of positive mental health and well-being. The aim of this research is to investigate the distribution and determinants of positive mental health and well-being in a large, broadly representative sample of third level students using WEMWBS.Methods
Undergraduate students from one large third level institution were sampled using probability proportional to size sampling. Questionnaires were distributed to students attending lectures in the randomly selected degrees. A total of 2,332 self-completed questionnaires were obtained, yielding a response rate of 51% based on students registered to relevant modules and 84% based on attendance. One-way ANOVAs and multivariate logistic regression were utilised to investigate factors associated with positive mental health and well-being.Results
The sample was predominantly female (62.66%), in first year (46.9%) and living in their parents’ house (42.4%) or in a rented house or flat (40.8%). In multivariate analysis adjusted for age and stratified by gender, no significant differences in WEMWBS score were observed by area of study, alcohol, smoking or drug use. WEMWBS scores were higher among male students with low levels of physical activity (p=0.04). Men and women reporting one or more sexual partners (p<0.001) were also more likely to report above average mental health and well-being.Conclusion
This is the first study to examine positive mental health and well-being scores in a third level student sample using WEMWBS. The findings suggest that students with a relatively adverse health and lifestyle profile have higher than average mental health and well-being. To confirm these results, this work needs to be replicated across other third level institutions. 相似文献20.
Paul A. Bolton 《The Yale journal of biology and medicine》2014,87(3):241-249
In this paper, the author contrasts the substantial impact of mental health problems on global disability with the limited attention and resources these problems receive. The author discusses possible reasons for the disparity: Compared to physical disorders, mental health problems are considered less important, perhaps due to lower priority of disorders that primarily cause dysfunction rather than mortality, and skepticism that mental disorders are treatable in low-resource countries. He argues that achieving improved global health and development requires addressing problems causing disability, particularly mental health problems among populations in which the common mental disorders are frequent due to deprivation, war, and disasters. The author contends that services addressing the common mental disorders could be made widely and relatively cheaply accessible if provided by non-professional workers at the community level. 相似文献