Alexandru Gaina

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There is growing interest in the influence of socioeconomic status (SES) on health. Individual SES has been shown to be closely related to mortality, morbidity, health-related behavior and access to health care services in Western countries. Whether the same set of social determinants accounts for higher rates of mortality or morbidity in Japan is(More)
BACKGROUND Lifestyles are associated with physical and mental health status, as well as health-related quality of life (QOL) in adults. There is little information about relation between lifestyles and QOL in children. This study aims to examine the correlation among Japanese children. METHODS Subjects were from the Toyama Birth Cohort Study, a(More)
We surveyed the sleep-wake patterns and lifestyle habits in a sample of Japanese first to third year junior high school children (n=638, age 12 to 15 yrs), of whom 29.3% were evening type, 64.1% intermediate type, and 6.6% morning type in preference. The morningness-eveningness (M-E) score was lower (more evening typed), 16.1 vs. 15.4 in first compared to(More)
OBJECTIVE To examine daytime sleepiness and sleepiness interrelationship with sleep-wake patterns, eating habits, physical activity, and TV/video game time. STUDY DESIGN A cross-sectional survey with 9,261 school children (mean age of 12.8 years) from 93 junior high schools in Toyama prefecture, Japan. RESULTS The main outcome measures were daytime(More)
Few studies have examined the individual and social impact of smoking behavior in the Japanese population. The purpose of this study was to clarify the association between smoking behavior and socio-demographic factors, lifestyle, mental health and work characteristics of Japanese civil servants. A self-administered questionnaire survey of 1,439 employees(More)
Aims:To investigate associations between mothers' employment (full, part time and no employment) and nutrition habits (regularity of breakfast, snack, dinner, meal speed and portion size) in a sample of Japanese junior high schoolchildren, 12–13 years of age.Methods:A total of 10 453 children aged 12–13 years from the Toyama birth cohort study (fourth(More)
BACKGROUND There is little information about validation of young children's self-reported physical activity. This study assessed the validity of a self-reported questionnaire designed to measure children's physical activity. METHODS Subjects were 34 boys from 4th to 6th grade of a public elementary school. Contents of the self-reported physical activity(More)
BACKGROUND The validity of sleep quality and quantity indices as reported by schoolchildren has not been established. The purpose of this study is to evaluate the relationship between subjective sleep habits estimation and objective measurement data in schoolchildren. METHODS The study consisted of 42 healthy junior high school children aged 13-14. Sleep(More)
STUDY OBJECTIVE To determine gender and weekly differences in sleep patterns in Japanese children in junior high school. DESIGN A school-based study. SETTING N/A. PARTICIPANTS Ninety-one children, aged 13 to 14 years, from junior high schools in Japan. INTERVENTIONS N/A. MEASUREMENTS Sleep patterns were measured using actigraphy (Actiwatch) for 7(More)
OBJECTIVES Only a few long-term follow-up studies with a focus on the association between lung function and mortality in the Japanese population have been undertaken. In this study, we examined the associations of lung function, smoking and the results of allergy skin tests with mortality in a longitudinal study of the Japanese population. METHODS(More)
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