نتایج جستجو برای: primary schoolchildren
تعداد نتایج: 648203 فیلتر نتایج به سال:
purpose : to determine the prevalence of amblyopia and strabismus in the schoolchildren of the city of bojnourd, iran methods : in 2010, randomized stratified cluster sampling was employed in a cross-sectional study on primary and junior high schoolchildren. all the examinations were performed in schools. all students received refraction, vision and subjective refraction tests. the cover test w...
Objective: To investigate the iodine status of schoolchildren in the Principality of Liechtenstein. Design: A representative, cross-sectional principality-wide screening of iodine level in household salt and urinary iodine concentrations (UIC) in primary-school children. Data were compared with the WHO criteria and with 2009 iodine survey data from Switzerland, a neighbouring country that suppl...
OBJECTIVE Adequate consumption of fruits and vegetables is a part of recommendations for a healthy diet. The aim of the present study was to assess acute cumulative dietary exposure to organophosphorus and carbamate pesticides via fruit and vegetable consumption by the population of schoolchildren aged 11-12 years and the level of risk for their health. DESIGN Cumulative probabilistic risk as...
BACKGROUND Regular breakfast and well-balanced soft drink, and screen media consumption are associated with a lower risk of overweight and obesity in schoolchildren. The aim of this research is the combined examination of these three parameters as influencing factors for longitudinal weight development in schoolchildren in order to adapt targeted preventive measures. METHODS In the course of ...
From August 2000 to 2001, a dengue outbreak occurred in Mueang district, Ratchaburi Province, Thailand. About 800 cases of dengue infection were reported, and among them, 49.5% were clinically diagnosed as dengue hemorrhagic fever according to the WHO criteria. During the outbreak, the incidence rate of dengue infection in Hin Gong subdistrict was 2.9 per 1,000 population. A seroepidemiological...
OBJECTIVES To compare two surveys across seven states for the prevalence of dental caries among Mexican schoolchildren. STUDY DESIGN Analysis of two cross-sectional surveys: Schoolchildren from 6 to 10 years of age were examined in the 1988-1989 survey and 6- to 10-year-old and 12-year-old students were included in the 1998-2001 survey. The baseline data of seven states were available for ana...
This study aimed to determine the prevalence of H. pylori infections among schoolchildren and investigate the associations between H. pylori seropositivity and existence of gastrointestinal symptoms. Methods. A prospective cross-sectional study was conducted during a period from January to December 2012 at Kassala state, east of Sudan. Schoolchildren from different primary schools were enrolled...
OBJECTIVE The purpose of this study was to determine and compare the prevalence and presentations of developmental defects of the enamel (DDE) in the primary and permanent dentitions of a group of healthy schoolchildren residing in Granada (Spain). STUDY DESIGN A total of 1,414 healthy schoolchildren were examined using modified DDE criteria for recording enamel defects. RESULTS The prevale...
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