Background: West Nile Virus (WNV) is a serious mosquito-borne disease that can potentially lead to death. The purpose of this study is to spatially examine known risk factors for WNV within Georgia at the county level. The study produces maps that relate known WNV cases to high, medium, and low risk factor areas for additional analyses. Methodology: Cartographic visualization and statistical analysis software was used to examine the relationships between: the geographical distribution of age, race, gender, urbanicity, and population density of Georgians in relation to WNV cases by county. Chi-square analysis and odds rations were calculated to determine whether or not associations of risk and the likelihood of WNV case reports were significant. Results: Gender was found to be significantly associated with the distribution of reported WNV cases. Identification of high risk areas throughout the state was determined through the use of Geographic Information System software. Conclusion: Insights into the visual distribution of WNV risk factors throughout the state of Georgia can assist policy makers and public health planners to optimize resources in WNV transmission and prevention abatement and education efforts. This exploratory study provides a critical first glimpse into the distribution of WNV risk factors throughout the state.

The aim of this study was to evaluate the prevalence and severity of malocclusion and orthodontic treatment needs in a sample of 12-year-old South African school children using the Dental Aesthetic Index (DAI), and to assess the relationship between malocclusion and certain socio-demographic variables. The sample comprised 6142, 12-year-old children attending school in seven of the nine provinces of South Africa. For each subject the standard demographic information such as gender, population group, location type and employment status of the parents were collected, after which an intra-oral examination for occlusal status using the DAI was performed. The results showed that 47.7 per cent of the children in the sample presented with good occlusion or minor malocclusion, just over 52.1 per cent presented with identifiable malocclusion, a DAI score larger than 26. Of these, 21.2 per cent had definite malocclusion, 14.12 per cent had severe malocclusion and 16.89 per cent had very severe or handicapping malocclusion. Malocclusion as defined in this study was found to be significantly associated with the different provinces, the different population groups in South Africa, gender and dentition stage, but not with the location type or the employment status of parents. The results of the individual variables showed that anterior maxillary and mandibular irregularity occurred in more than 50 per cent of the sample. More than 40 per cent of the children examined showed signs of crowding. Spacing in the incisal segments occurred in almost 28 per cent of the sample and maxillary midline diastema was present in 16.66 per cent of the sample. At the age of 12 years, Black children, showed a higher prevalence of maxillary midline diastema, larger than 2mm, than their White, Coloured and Asian counterparts. A maxillary midline diastema, larger than 2mm, was more prevalent in 12-year-old females than in males. Thirty one per cent of the sample had an increased overjet larger than 3mm and a severe overjet of 6mm or more occurred in only 2.18 per cent of the sample. More Black 12-year-old children presented with an edge-to-edge anterior relationship and significantly less Black children had an increased overjet. Mandibular overjet affected only 10.43 per cent of the sample and was more prevalent in the late mixed dentition stage than in the early permanent dentition stage. Anterior openbite occurred in 7.7 per cent of the sample and ranged from 1mm to 8mm. Almost 44 per cent of the sample had a antero-posterior molar relation discrepancy. The results of this study indicated a high prevalence of malocclusion in 12-year-old South African children. The findings provide reliable base-line data regarding the prevalence, distribution and severity of malocclusion as well as useful epidemiological data on the orthodontic treatment needs of 12-year-old children in selected rural and urban areas in South Africa. The inclusion of occlusal traits as part of the index provided an opportunity to assess several occlusal characteristics in 12-year-old South African children, separately. / Thesis (MChD (Orthodontics))--University of Pretoria, 2004. / Orthodontics / unrestricted

Background: Suicide is the second leading cause of death among 15 to 29 year olds and 79% of global suicides occur in low- to-middle income countries. South Africa has the eight highest rate of suicide in the world, evidence that suicide is a serious public health concern. Identifying socio-demographic and clinical factors associated with high risk of serious self-harm or suicide, may be useful for improving patient care and strengthening appropriate referral pathways. Aim: To determine the sociodemographic and clinical factors associated with elevated levels of suicidal intent among self-harm patients who presented for treatment in the emergency room of an urban hospital in Cape Town, South Africa. Setting: A retrospective folder review of all patients who presented for treatment of deliberate self-harm to Groote Schuur Hospital. Methods: During the time period, 238 consecutive presentations for deliberate self-harm were identified and recorded on a data capture form.which obtained information about demographics, clinical characteristics and suicidal intent. The data was analysed using bivariate and multivariate analyses. Results: In our sample of 238 patients, 128 (54%) self-reported an elevated level of suicidal intent. Being of male gender, higher levels of education and having multiple reasons for selfharm were significant predictors of an elevated level of suicidal intent. Conclusion: Suicide is increasingly recognised as a serious public health problem globally, and in South Africa. Determining the socio demographic and clinical correlates for those at increased risk of suicidal behaviours, provides useful information on identifying vulnerable patients. This allows clinicians to improve patient risk assessment and public health awareness interventions may be closer targeted to at risk groups

Alcohol use during pregnancy is common and its consequences often result in a broad range of negative, lifelong developmental outcomes. This study describes the effects of prenatal alcohol exposure and interacting socio-demographic factors on early childhood development. One hundred and twenty one children from the Northern Cape, South Africa, were clinically examined using standard diagnostic procedures and assessed using the Griffiths Mental Development Scales (GMDS/ER) at 7-12 months (Time 1) and 5 years of age (Time 2). Participants were assigned to either: a Fetal Alcohol Syndrome (FAS/Partial Fetal Alcohol Syndrome (PFAS); a Prenatal Alcohol Exposed (PAE); or a Control group based on the diagnosis at 5 years. Mothers/caregivers were interviewed to ascertain socio-demographic information, including prenatal alcohol exposure. During infancy, the FAS/PFAS group showed significantly lower gross motor and language abilities, with delays in higher-order executive functioning becoming more apparent with age. No significant differences were noted during infancy between the PAE and Control groups over any developmental subscales. However, with age, higher-order executive function delays were reported in the PAE group. Performance on the infant and child versions of the GMDS was not significantly correlated, suggesting that the tests may be measuring different developmental constructs. Lower maternal education, unemployment and later recognition of pregnancy were associated with reduced social adaptive functioning, and language and eye hand coordination abilities, irrespective of amount of prenatal alcohol exposure over both time points. Larger anthropometric birth measurements and longer duration of breastfeeding were significantly related to increased performance on the GMDS at 5 years within the groups exposed to prenatal alcohol. Socio–demographic variables are likely to complicate developmental profiles for all three groups, with prenatal and postnatal nutrition emerging as possible protective factors for positive developmental outcomes at 5 years of age.

Geographic Information Systems (GIS) can assist in using information from census data to investigate questions for national and local government planning purposes, such as socio-economic profiles and needs of communities. I will be doing this on the data from the Ethiopian census, scheduled for 2006. . As no Ethiopian geo-referenced data is available at this stage. I am using the 10% sample of the South African Census 2001 data for KwaZulu-Natal (KZN), as a hypothetical population. KZN was chosen as this provides a setting with urban and rural populations, as well as mountainous and flat areas, and so is in some ways similar to Ethiopia. The questions to be asked of the Ethiopian census data are of the form: · What exists at a specific location or in a specific area? (eg what health facilities are there, what is the population)? · What access does the population have to facilities in the area? Does the road network need to be improved to resolve the problem of access · Where are groups of people in greatest need of … (eg where are there clusters of people with disabilities, and are there facilities for them) · What are the characteristics of ... (eg female headed households) and what are these related to (eg HIV/AIDS or migrant labour?) · What changes need to be made to infrastructure to increase service to communities in need? The results for the hypothetical population show that there are areas with high unemployment rates, low school attendance and education levels, high levels of female headed household, and difficulties of access to educational and health facilities. Many households do not have toilet facilities, and obtain water from rivers, which could impact on the health of the communities. Migrant workers were investigated to see if these were likely to be migrants from neighbouring countries, or from other provinces. The numbers in the hypothetical population in these cases are small, so little can be concluded from this.

Objective: To determine the dental treatment needs of Canadians and how they are distributed. Methods: A secondary analysis of data from the Canadian Health Measures Survey was undertaken. Weights were applied to make the data nationally representative. Bivariate and multivariate regressions were used to identify predictors of need. Sensitivity, specificity, positive and negative predictive values were calculated to compare self-reported and clinically determined needs. Results: Of the 34.2% who required dental treatment, most needed restorative (20.4%) and preventive (13.7%) care. The strongest predictors of need were having poor oral health, reporting a self-perceived need for treatment and visiting the dentist infrequently. A discrepancy was found between clinical and self-reported needs. Conclusions: Roughly 12 million Canadians have unmet dental needs. A number of factors are predictive of having unmet dental conditions. Program and policymakers now have information by which to assess if their programs match the dental needs of Canadians.

During the last year of World War I (1918), a second deadly foe was causing mortality around the world. Spanish Influenza killed an estimated 50-100 million people worldwide, including 50,000 people in Canada during the 1918-1919 pandemic. This thesis examines the impact of Spanish Influenza on people living in Vancouver, British Columbia, Canada between June of 1918 and June of 1919. Statistical analysis with SPSS was used to determine the association between influenza-caused deaths and socio-demographic characteristics such as age, gender, immigration status, and employment. In Vancouver, those who were between the ages of 19 to 39, and those who were employed, showed higher odds of dying from influenza during the epidemic. / Graduate

Objective: To determine the dental treatment needs of Canadians and how they are distributed. Methods: A secondary analysis of data from the Canadian Health Measures Survey was undertaken. Weights were applied to make the data nationally representative. Bivariate and multivariate regressions were used to identify predictors of need. Sensitivity, specificity, positive and negative predictive values were calculated to compare self-reported and clinically determined needs. Results: Of the 34.2% who required dental treatment, most needed restorative (20.4%) and preventive (13.7%) care. The strongest predictors of need were having poor oral health, reporting a self-perceived need for treatment and visiting the dentist infrequently. A discrepancy was found between clinical and self-reported needs. Conclusions: Roughly 12 million Canadians have unmet dental needs. A number of factors are predictive of having unmet dental conditions. Program and policymakers now have information by which to assess if their programs match the dental needs of Canadians.

Previous research on investor preferences focused mainly on the relationship between socio-demographic variables and risk tolerance. This study extends the research in this area by focusing on three aspects of investor preferences: risk tolerance, time horizon, and estate intentions. The objective is to provide a more comprehensive model of investor preferences, including both psychological and attitudinal variables. This study addresses the following: Are socio-demographic variables sufficient to predict investor preferences? Is there a difference between males and females? How much additional variance is explained by including political ideology, positive psychology attitudes, and pro-social attitudes? Are these attitudinal variables simply additive or are they interactive? Data were collected from MBA students and senior undergraduate students in a major research university in South Florida. A scale was developed to measure estate intentions, a construct that has never been examined in management studies. The findings supported the expectation that psychological variables would be positively correlated with the dependent variables. However, I expected that pro-social attitudes would be a moderator variable, and this expectation was not realized. This dissertation contributes to the investor preferences field in several ways. First, it demonstrates the importance of psychological and attitudinal variables in explaining investor preferences. I also found differences between males and females regarding risk tolerance. This study can provide financial advisers with a deeper understanding of the importance of psychological and attitudinal variables in determining investor behavior. Finally, the results of this study augment and expand stakeholder theory. This study brings the investor into the stakeholder model, enhancing the descriptive, explanatory, and predictive capabilities of stakeholder theory. Future research could replicate this study using real investors in different locations for cultural variation, or using a panel of respondents for a longitudinal study.

Psychosomatic health, including sleep, is important for adolescent well-being and daily functioning. Sleep difficulties are more seldom studied per se and whether there is socio-demographic variation in sleep difficulties among adolescents in Sweden is less known. The overall aim of the present study was to examine the frequency and social distribution of sleep difficulties among adolescents in Sweden. The child supplements of the Survey of Living Conditions, a Swedish nationally representative sample of ages 10-18, from years 2002 and 2003 were used (n=2531). Information from adolescents was linked to information from parents in a cross-sectional study design. Based on logistic regression analyses, variation in sleep difficulties was present according to gender, age, family structure, family economy, parent’s unemployment and residential area. No systematic sleep inequality by social class was found in the present study. The main results showed that adolescent girls, older age groups of adolescents, adolescents living in reconstituted families, living in families with a lack of cash margin, having unemployed parents and living in big cities reported sleep difficulties to a greater extent. Social factors, together with biological, psychological and cultural factors interact in explaining the variation in sleep difficulties.