La Guyane présente la fécondité la plus élevée de l’ensemble des régions françaises et également des autres territoires d’Amérique du Sud et de la Caraïbe : 3,3 enfants par femme estimés en 2018.Cette thèse propose une analyse des principaux déterminants de la fécondité en Guyane, notamment aux zones frontalières, les plus natalistes. Ce travail s’appuie sur les résultats d’une enquête par questionnaire menée auprès de femmes et d’hommes résidant dans quatre communes frontalières avec le Suriname, à l’ouest, et une commune frontalière avec le Brésil, à l’est. Un complément a été réalisé dans le municipio d’Oiapoque, au Brésil, à la frontière guyanaise.Cette thèse présente tout d’abord le contexte historique et ethnologique qui préside à la composition actuelle de la population de Guyane. Puis elle examine les caractéristiques sociologiques de la société guyanaise d’aujourd’hui, et notamment des communes frontalières, où les populations sont économiquement et socialement précaires, peu instruites et fréquemment migrantes.Explorant comment interagissent les déterminants socio­économiques, le niveau d’utilisation de la contraception, l’âge à la première maternité, le nombre actuel d’enfants et les normes de fécondité, les résultats de la recherche montrent qu’il y a deux situations bien distinctes : à l’est, pour les femmes d’origine brésilienne, la transition démographique est pratiquement terminée ; à l’ouest, pour les femmes bushinenge, elle ne fait que commencer.Cette recherche repose sur l’hypothèse que le moment présent se situe, pour les femmes bushinenge, à la charnière entre fécondité non régulée et fécondité régulée. / French Guiana has the highest fertility level of all French regions and of other countries in South America and the Caribbean: on average, 3.3 children per woman estimated in 2018.This thesis aims to analyze the main determinants of fertility in French Guiana, particularly in border areas which present high birth rates. It draws on the results of a survey of women and men by questionnaire residing in four municipalities bordering Suriname in the West, and a border town with Brazil in the East. An additional survey was conducted in the municipality of Oiapoque in Brazil at the Guyanese border.Firstly, this thesis presents a historical and ethnological background that determine the current composition of the population of Guyana. Secondly, it examines the sociological characteristics of today’s Guyanese society, notably border municipalities where populations are economically and socially precarious, poorly educated and frequently migrating.Exploring the interaction between socioeconomic determinants, the level of contraceptive use, age at first birth, current number of children and fertility standards, our research findings show two different situations: demographic transition is almost complete in the East for women of Brazilian origin while in the West, for bushinenge women, demographic transition is just beginning.This research is based on the assumption that currently, fertility of bushinenge women is at a transition period between unregulated and regulated fertility.

To be present online is seen, in recent time, as a necessity for fashion companies in order to sustain on the market. Since online shopping lack the opportunity for customers to try on purchased products it entails a risk of experiencing dissatisfaction when orders are received. Through this, customers demand determinants that ensure safety within the purchase. Different kinds of customers might, however, possess various motivations for purchasing, stressing the requirements for variety in service value deliverance. Therefore, purchase and return policies comprise a significant importance in order to create attractiveness towards customers. The problem, though, consists of the balance between offering lenient purchase and return policies, to create competitiveness, but still considering excessive purchasing and depreciation of product value. There are several determinants affecting the shopping experience online. These were combined, with components of an online purchase, in a theoretical model to empirically test the key conceptual ideas embedded in the consumption system perspective. Further, primary data was conducted through company interviews and focus group interviews, with the aim to explore customer behavior online. Findings, from interviews compared with secondary data, analyzed through the theoretical model, indicates that the right of withdrawal and its additional components such as charges, time and inconvenience is interpreted differently by different customers. Further, it is up to e-tailers to discover the benefits and drawbacks of different policies in order to detect the most suited policy for them and their customers.

Osteoporosis (OP) is a disease characterized by low bone mass and structural breakdown of the skeleton. The disease may be prevented through weight-bearing, moderate to vigorous physical activity (MVPA), which is important for peri- and postmenopausal women who are at great risk for OP. However, most women do not participate in activity according to guidelines, which can negatively impact bone health. A better understanding of multidimensional factors that influence MVPA may help inform physical activity interventions aiming for OP prevention. The purpose of this study was to utilize social cognitive theory (SCT) to understand the associations between social cognitive factors and MVPA among peri- and postmenopausal women. Eighty-seven peri- and postmenopausal women (aged 43 to 65) completed this study. Participants completed demographic, health, calcium, and SCT questionnaires. SCT variables assessed included task self-efficacy (SET) and barrier self-efficacy (SEB), perceived social support from friends (SSFR) and family (SSFA), and perceived access to facilities (ACF) and home equipment (ACH). Participants wore an NL-1000 pedometer for one week to assess total steps per day and minutes spent in MVPA. Past year MVPA, past week leisure MVPA, and past week occupational/ transport MVPA were assessed with the Modifiable Activity Questionnaire. Stepwise regression analysis was used to identify the direct relationships between cognitive variables and each of the physical activity outcome measures. Moderation-mediation analysis was conducted to determine if significant interaction effects or confounding effects existed between social cognitive variables and each physical activity variable. Age, income, BMI, and highest level of education were controlled for in all analyses. Results showed significant relationships between social cognitive factors and each physical activity outcome, supporting the use of such variables for understanding physical activity behavior in peri- and postmenopausal women. For steps per day and MVPA minutes per day, 32% and 26% of the variance in activity was explained. For past year MVPA, past week leisure MVPA, and occupational/ transport MVPA, 39%, 26%, and 27% of the variance in activity was explained, respectively. The combination of variables entering the models was different for each physical activity outcome, but overall, SEB consistently emerged as the most prominent factor. Moderation analyses revealed a three way interaction effect between SEB, SSFR, and ACF for steps per day, and two-way interaction effects between SEB and SSFR for past year MVPA and past week leisure MVPA. Mediation analysis indicated SSFA confounded the relationship between SEB and past year MVPA. Results of this study indicate social cognitive factors are directly and indirectly associated with total and MVPA in peri- and postmenopausal women. These relationships should be considered when aiming to develop physical activity intervention programs for prevention of OP in peri- and postmenopausal populations.

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Cesarean section (CS) rates have generally increased across the world in the past decade. Reducing elective cesarean section (ECS) rates is imperative as many countries aim to maintain threshold CS rates at or below 15%, the level recommended by the United States' National Institutes of Health. Women are believed to consider ECS for various interconnected psychosocial reasons, but few quantitative studies have investigated these factors. This prospective cohort study was based on the social ecological model (SEM) and the theory of planned behavior (TPB) models, and identified the psychosocial predictors of ECS among 1,268 expectant women in 2 hospitals in Nairobi. Participants completed a structured questionnaire consisting of 10 validated psychosocial scales and were followed for actual mode of delivery (MoD) from hospital records and postnatal telephone interviews. The overall prevalence of CS and ECS were 16.0% and 6.4%, respectively; the CS rate was not statistically higher than the recommended 15% (p > 0.05). The combined CS incidence rate for these 2 hospitals was 83 per 1,000 births per month. Autonomy, fear of childbirth, pregnancy related anxiety, perceived social support from friends, and outcome expectancy for birth were statistically significant predictors of ECS, given the parity and age at first pregnancy, Ï?2(df = 19) = 77.735, p

Casual empiricism suggests that the arrival of a major technology company into an area has the ability to transform the local economy. I examine the economic impact on residential real estate rental prices by the opening of offices by four of the top technology companies—Apple, Facebook, Google, and Microsoft. Rents are about 2.8% lower in metropolitan areas with top technology company presence compared to metropolitan areas without top technology company presence. Taking this economic outcome into account may influence the public and policymakers’ willingness to give tax breaks and other incentives to attract major technology companies.

Immunization has been recognized globally as a cost-effective public health intervention. However, despite its benefits, children in northern Nigeria are still adversely affected by the negative consequences of inadequate uptake of immunization. The purpose of this study was to assess antenatal care and maternal sociocultural determinants that influence childhood immunization within 2 months of birth in northern Nigeria. Constructs of social cognitive theory were applied to this retrospective correlational cross-sectional inquiry involving women 15-49 years old in northern Nigeria. Secondary data (the 2013 Nigeria Demographic and Health Survey) were analyzed using univariate, bivariate and multivariate logistic regression. Statistically significant (p < 0.05) predictors of uptake of childhood immunization within 2 months of birth were the person who delivered antenatal care, the number of antenatal care visits, the number of tetanus injections, maternal educational level, religion, wealth index, husband/partner educational level, and the person who decides on health care. Educated Christian women from middle-class or rich homes, whose husbands/partners were also educated and who jointly decided on health care, made numerous contacts with health care professionals, and received at least one tetanus injection during antenatal care, had a higher likelihood of immunizing their children within 2 months of birth. The positive social change implications for this study include providing evidence of deterrents to childhood immunization that could lead to relevant policies and interventions leading to healthier children, communities, and society.

Low birth weight (LBW) is a major public health concern globally. Despite its negative social and economic impact on the family and community at large, it has remained relatively unexplored at population level in Zimbabwe. The purpose of the study was to establish determinants of LBW using data from the 2015 Zimbabwe Demographic and Health Survey. The socioecological model was the conceptual framework for the study. A secondary analysis was conducted on 4,227 mother-infant dyads. Independent variables were duration of pregnancy, number of births within the past 5-year period, exposure to mass media, type of fuel used for cooking in the household, and intimate partner violence. Covariates were maternal age at delivery, place of residence, anemia, marital status, education, wealth index, ever terminated pregnancy, infant sex, and alcohol consumption. For parsimony, statistical significance was set at p < 0.05 at the 95% confidence interval (CI). Multivariable logistic regression analysis showed that mild maternal anemia (adjusted odds ratio [aOR] 1.83 CI 1.17-2.87 p = 0.01), moderate to severe anemia (aOR 1.80 CI 1.01-3.19 p = 0.05), and being a female neonate (aOR 1.48 CI 1.17-2.87 p = 0.008) had higher odds for LBW. Pregnancy duration of 8 months (aOR 0.01 CI 0.003-0.039 p < 0.001) and of 9 months (aOR 0.12 CI 0.04-0.33 p = 0.001) had lower odds for LBW. Birth of 2 infants within a 5-year period (aOR 2.40 CI 1.24-4.66 p = 0.01) was associated with LBW. Implications for positive social change include coming up with a health policy on the management of anemia during pregnancy and health promotion messages to promote optimal birth spacing, including strategies that reduce chances for preterm deliveries.

A decline in Human Immunodeficiency Virus (HIV) prevalence rates have been observed among females ages 15 to 19 years and 20 to 24 years in Zimbabwe between 2005 and 2010. However, for males 15 to 19 years, rising trends were observed, whereas for males ages 20 to 24 years, rates fluctuated between 2005 and 2011. The purpose of this cross-sectional study was to examine relationships between sexual behaviors and practices and HIV prevalence among young males and females ages 15 to 24 years in Zimbabwe. Guided by constructs of proximate determinants framework, extracted data from two National Demographic Health surveys of 2005/06 and 2010/11 were analyzed using chi square and binary logistic regression. This study revealed that sexual practices, relationship status, and education status increase the odds of being HIV positive differently among 15 to 19-year-olds and 20 to 24-year-olds based on gender and changes through time. Significant relationship existed between HIV positive serostatus and total number of life time partners among females 15 to 19 years and 20 to 24 years; lack of condom use among males 20 to 24 years in 2005/06; early sexual debut and lower education status among females 20 to 24 years; and being widowed, separated, or divorced among males and females 20 to 24 years in 2010/11. The Odds of being HIV positive for males ages 15 to 19 years was not predicted by sexual practice, creating a need for future study. This study can contribute to positive social change by providing information about the associations between HIV serostatus and the assessed risk factors, which may help promote awareness about HIV infection risk, thereby helping develop and implement targeted public health interventions to reduce the burden of HIV.

The purpose of the study was to analyze several determinants of profit on a simulated northern Utah dairy farm. A linear programming model was developed to accomplish this. Optimal conditions on the farm were estimated and then other model applications were made to evaluate the importance of milk price, cropland ownership, and corn silage production and feeding. The significance of cow quality also was estimated. Optimal conditions on the farm gave rates of return to capital between savings rates and loan rates obtainable at a financial institution. Marginal values derived for land did not support the current asking price of land. The marginal values derived for cows would support higher levels of investment in the cows than current prices of the cows. Optimal crop mixes and rations also were derived. Milk price had a direct effect on financial measures of the farm's well-being. Increasing herd size was found to be a logical response to a decrease in milk price. Cropland ownership had an inverse effect on returns but a direct effect on annual income. Corn silage production was found to be more important for a poorer herd than a better herd. However, corn silage production and feeding had a near neutral effect on measures of financial well-being.