Diet contributes to a large proportion of preventable deaths and diseases. Adolescence is a period during which diet may particularly evolve, and therefore represents an opportunity to develop long-lasting healthy dietary behaviours. However, dietary habits are particularly subject to social variations, which may lead to social inequalities in health. Tackling them requires public health actions based on a comprehensive approach of social determinants at this life stage. This doctoral thesis aimed to examine socioeconomic and sociocultural disparities in dietary habits among adolescents, using the repeated cross-sectional Health Behaviour in School-aged Children (HBSC) surveys conducted in French- and Dutch-speaking Belgian schools. The three specific objectives of this aim were: (i) to study the socioeconomic disparities in dietary habits of adolescents from different migration status; (ii) to determine trends in dietary disparities between 1990 and 2014; (iii) to estimate disparities in dietary habits according to the socioeconomic and migration status at both individual and contextual levels. Firstly, different socioeconomic disparity patterns according to the migration status were observed, with narrower disparities in 1st-generation immigrants than among natives, highlighting the major role of cultural influences in immigrant populations. Secondly, the long-term trend analyses emphasised increasing disparities for healthy foods and decreasing disparities for unhealthy foods. In addition, when the consumption of a food group increased overall, disparities decreased, and vice-versa. Finally, the multilevel analyses showed that individual and school disparities were independently associated with food consumption frequencies. Furthermore, this observational assessment revealed the weak relationships between nutrition policy in schools and dietary habits. Note that in the Brussels-Capital Region, native adolescents were at higher risk of unhealthy dietary behaviours than immigrants, but the risk of unhealthy behaviours tended to be higher when, in the school, the socioeconomic index decreased, and the proportion of immigrants increased. Overall, our analyses underlined the need to include, in addition to the socioeconomic factors, cultural components in public health actions aimed at addressing social inequalities in adolescent diet, in a multicultural context such as Belgium. Support to schools, with a greater emphasis on those disadvantaged in order to prevent increased inequalities, is needed to develop a consistent and effective nutrition policy. Finally, further studies are needed to better understand the mechanisms behind dietary disparities among adolescents, particularly those related to their migration status and broader socioeconomic environment. / Doctorat en Santé Publique / info:eu-repo/semantics/nonPublished

Philosophiae Doctor - PhD / Background Overweight/obesity is a risk factor for non-communicable diseases such as cardiovascular diseases, diabetes, and some cancers. Obesity in childhood is known to predict later obesity in adolescence and adulthood. Understanding the factors associated with overweight/obesity among children may present an opportunity for timely and appropriate interventions in the African setting. Aims 1. To describe the prevalence of overweight and obesity and associated factors among school children aged 8 - 11 years in primary schools in Adentan Municipality, Ghana. 2. To review the available literature on childhood obesity in the African context to provide evidence to support the design and improvement of appropriate school-based interventions for the prevention and control of overweight/obesity among African learners. Methodology This was a cross-sectional study design which was conducted in two phases. In Phase I, the available literature on the prevalence of overweight and obesity among learners, school-based interventions to promote healthy nutrition and physical activity (PA), and weight status, and key policy interventions at the national levels to provide supportive environments in the African context was reviewed and synthesised. In Phase II, interviews were conducted to collect individual and family data from 543 learners in 14 schools to assess family socio-demographics characteristics, dietary, PA, and sedentary behaviours, and sleep duration. Body weight, height, and waist circumference were measured. Data on perceived school neighbourhood/ community, school food, and PA environments were collected from school heads/administrators. A sub-sample of 183 children participated in the assessment of body fat using the deuterium dilution method. Multivariable and logistic regressions, multilevel logistic regressions, and multilevel linear regression models were used to examine the associations among child, family, and school level explanatory variables, and overweight/obesity, abdominal obesity and body mass index (BMI). Results The reviews revealed the following: (i) The pooled overweight and obesity estimates across Africa were: (10.5% 95% CI: 7.1-14.3) and 6.1% (3.4-9.7) by World Health Organization; 9.5% (6.5-13.0) and 4.0% (2.5-5.9) by International Obesity Task Force; and 11.5% (9.6-13.4) and 6.9% (5.0-9.0) by Centers for Disease Control and Prevention, respectively and differed for overweight (p=0.0027) and obesity (p<0.0001) by the criteria. The estimates were mostly higher in urban, and private schools, but generally similar by gender, major geographic regions, publication year, and sample size; (ii) Although inconsistent, school-based interventions broadly improved weight status and some energy-balance related health behaviours of African learners; (iii) On applying the Analysis Grid for Environments Linked to Obesity (ANGELO) framework, key interventions on unhealthy diets and physical inactivity targeted the school, family and community settings, and macro environments, and broadly aligned with global recommendations. In the school-based study, 16.4% of Ghanaian learners were overweight (9.2%) or obese (7.2%), with the prevalence being significantly higher in children from middle- to high socio-economic status (SES) households, and private schools. In multivariable regression models, attending private school (AOR = 2.44, 1.39–4.29) and excessive television viewing (AOR = 1.72, 1.05–2.82) significantly increased the likelihood of overweight/obesity, whereas adequate sleep (AOR = 0.53, 0.31–0.88), and active transport to and from school (AOR = 0.51, 0.31 – 0.82) decreased the odds. Using deuterium-derived percent body fat as criterion method, the published BMI criteria was found to be highly specific but with moderate sensitivity for diagnosing obesity among Ghanaian children. Moreover, the BMI-for-age z-scores that optimise sensitivity, specificity, and predictive values for obesity were lower than the published cut-off points. Multilevel logistic and linear regression analyses revealed that the school contextual level contributed 30.0%, 20.6% and 19.7% of the total variance observed in overweight (including obesity), abdominal obesity, and BMI respectively. Availability of school cafeteria (β = 1.83, p = 0.017) and shops (β = 2.34, p = 0.001), healthy foods (β = 0.77, p = 0.046), less healthy foods (β = 0.38, p = 0.048), child age (β = 0.40, p = 0.008), school-level SES (β = 1.02, p < 0.0001), private school attendance (β = -1.80, p = 0.006), and after-school recreational facilities (β = 0.89, p < 0.0001) were all associated with BMI. In the mutually adjusted models for all significant predictors, school-level SES, healthy foods, after-school recreational facilities, and PA facility index remained significant predictors of overweight and or abdominal obesity. Conclusions The prevalence of overweight/obesity is significantly higher in urban children attending private or high SES schools, regardless of criteria used to define obesity. A number of individual, family, and school-level factors significantly predicted weight status of school children in Ghana. Given that many African governments have initiated policy interventions aiming to provide supportive environments for healthy choices, it is recommended that resources are made readily available for the implementation of these interventions across the home, school and community.

No description available.

Students who speak local varieties (i.e., dialects) of English that differ from the codified variety promoted in school are at a disadvantage. Research illustrates that differences in sound systems, grammar, vocabulary, and usage can negatively affect literacy development and achievement in math and science, and lead to misunderstandings and changes in teacher attitudes toward students. Moreover, the use of inappropriate assessment tools may result in unnecessary pathologization and inappropriate pedagogical approaches. Since many Indigenous children may speak local varieties, it is reasonable to assume that the same issues that hinder school success for speakers of other varieties affect many Indigenous students in Canada in similar ways. However, to date, research concerning Indigenous Englishes in Canada is scant. Similarly, virtually no empirical evidence has been gathered on use in Canadian schools. By extension, the trajectory of use of features as children progress through grades remains unknown. The goal of this research was to begin to address the crucial necessity of learning more about Indigenous English varieties, in order that appropriate language assessment and pedagogical practices can be implemented. The research, conducted in a remote community in Northern British Columbia, Canada, concentrates on differences in grammar used by a group of First Nations school-aged children. I analyzed oral narrative language samples of Kindergarteners, and oral and written narrative language samples of students in Kindergarten to Grade 5, over a three-year period. Results reveal the presence of at least 23 distinct grammatical features, many of which may have been influenced by the structure of the ancestral language. At school entry, students used grammatical features at high rates, regardless of whether or not they later required speech-language pathology or special education services. As children progressed through the grades, the rate at which they produced features appeared to follow a curvilinear trajectory, declining until grades 3 and 4 and then gradually rising again in middle school. A preference for using shorter sentences with less use of subordination and embedding of clauses also appears to be a feature of this variety. Most of the features the children used in their speech, they also used in their writing. Children had the most difficulty switching to standard English forms of verb tense, and so verb tense may require more direct instruction. While my results may not be directly generalizable to other First Nations communities, it is anticipated that educators will use them as a guide in their practice and instruction, so they can cease confusing features of a local variety with errors requiring “correction”, avoid unnecessary pathologization, and adjust expectations regarding the rate at which children can be expected to acquire the codified standard language model. It is also hoped that this study will contribute to the preservation and celebration of the unique ways of speaking English that have evolved in northern communities. / Graduate / 2021-09-16

This review of the literature was in investigation of informal measures used to assess syntax in normal-language and language-impaired, school-aged children. From the eighteen studies that were researched in this review of the literature, 86 measures and their variants were reviewed. Data concerning the T-unit, the most widely used measure for determining syntactic maturity was reviewed as well. Any findings uncovered regarding the syntactic skills of normal - language and/or language-impaired, school - aged children were summarized (typically on the basis of ability level, age or grade level, and sex). In addition, the strengths and weaknesses in previous studies of oral syntactic maturity in either normal-language or language - impaired, school- aged children was discussed. This was done by systematically reviewing indicators of study quality.

A subsample of 478 children who originally participated in a larger study (Tomblin et al., 1997) was examined for type and frequency of morphological noun and verb errors in oral and written narratives in 2nd and 4th grade. Each child represented one of four groups: Typical Language, Specific Language Impairment, Nonspecific Language Impairment, and Low Nonverbal IQ. Three MANOVA's and post-hoc comparisons were used to test three predictions: (1) children will have more difficulty with verb than noun morphology; (2) children will make more errors in the written than the spoken narratives; and (3) children whose language impairments persist will produce more morphological errors than children whose language problems appear to resolve. Analyses supported the first two predictions but not the third. Results are discussed in relation to levels of morphological mastery, language development and processing demands. Clinical implications of the study are presented.

Childhood obesity is a prevalent problem in the United States. Obesity increases the risk for many diseases. Obese children are likely to become obese adults with additional comorbidities. Studies have reported mixed findings regarding associations between reading nutrition labels and improved dietary behaviors/healthy weight status. The purpose of this study is to determine whether the frequency of children reading nutrition labels is related to frequency of performing 12 dietary behaviors. De-identified baseline data from a previous quasiexperimental pilot study were analyzed. Data were collected from 4th and 5th graders (n = 42) at an after-school program. An adapted paper survey was administered to the children to measure the number of days (0–7) they read nutrition labels and performed 12 dietary behaviors over the preceding week. Due to non-normal distribution of data, non-parametric Spearman rho correlations were conducted to determine relationships between frequency of reading nutrition labels and dietary behaviors. Positive correlations were found between frequency of reading nutrition labels and eating fruit for breakfast; eating vegetables at lunch/dinner; eating whole grain/multigrain bread (p < .05); eating fruit for a snack; eating vegetables for a snack (p < .01). Frequency of reading nutrition labels was inversely related to drinking soda/sugar-sweetened beverages (p < .05). Significant relationships were found between frequency of reading nutrition labels and several dietary behaviors associated with childhood obesity prevention. Findings are promising and support the need for further intervention research to determine potential direct influences of children reading nutrition labels on dietary behaviors.

No description available.

Over the past three decades, obesity rates for children ages 2-5 years have doubled from 5% to 10% and children ages 6-11 years have more than tripled from 4% to over 15%. Adequate amounts of fruits and vegetables in the diet are necessary to reduce increased risks associated with long term inadequate consumption of these foods. Grant recipients received funds to purchase a sectionizer and slicer to prepare more attractive fruits and vegetables for school food service lines. Through the use of a descriptive survey, recipients reported a significant reduction in workload on staff and an increase in the amounts of fruits and vegetables children took from service lines after these foods were prepared using this equipment. Using equipment designed to increase convenience or enhance appearance of fruits and vegetables in school food service operations may increase the consumption of fruits and vegetables provided to children through child nutrition programs.

This thesis examines the efficacy of a social communication intervention in increasing the emotion word productions in school-aged children with language impairment (LI). The study had a multiple baseline single subject design in which 5 children between the ages of 6 and 11 received 20 intervention sessions, each lasting 20 minutes. Intervention activities included reading and discussing children's books, enacting the stories using toys, and journal writing to reflect on experiences in each session. Emotion word productions during intervention sessions were coded for total productions within the categories of happiness, anger, sadness, fear, surprise, and disgust. Productions were also coded for type (spontaneous, in response to a question, cued, or imitated) and valence agreement. The percentage of non-overlapping data (PND) was calculated (measuring the overall percentage of sessions in which the participants produced more emotion words than they did in the baseline session with the most emotion word productions) in order to show efficacy of the intervention for each participant. According to PND calculations, the intervention was generally effective for 3 of the 5 children and was effective in at least one emotion category for each participant. Participants demonstrated no difficulties with valence agreement. Data regarding types of production indicated that the majority of emotion word productions during the intervention were elicited in some way rather than spontaneous. These results suggest that children with LI increased the number of emotion word productions during the intervention, but were still dependent upon the scaffolding provided by the intervention.