Publications by authors named "Tak-sun Ignatius Yu"

Background: Participatory training on occupational health is widely used in the world. Evaluations of local experiences are necessary to its successful performance.

Objectives: The project evaluated the effectiveness of participatory training on occupational health improvement in small and medium enterprises of China, and explored local practice experiences.

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Background: Although China is the most coveted cigarette market worldwide, few studies have examined the longitudinal effects of environmental tobacco smoke (ETS) on health.

Purpose: To examine the relationship between exposure to ETS and respiratory health in Chinese schoolchildren.

Methods: The study subjects included 1718 children, who were never-smokers, aged 10.

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Objective: To investigate the relationships of cardiorespiratory fitness (CRF) and physical activity (PA) with the risk of overweight/obesity in Chinese schoolchildren.

Methods: A total of 1795 children aged 8-13 years at baseline were followed-up for 18 months from 2006 to 2008 in Guangzhou, China. Children were categorized as "normal weight", "overweight", and "obese" using Chinese obesity cut-off points.

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Objective: To evaluate the adverse effect of exposure to air pollution on lung function growth in school-aged children.

Methods: A cohort of 1983 children from three districts in Guangzhou, China was followed-up for 6 months. The children performed pulmonary function tests twice, and their parents reported the child's respiratory symptoms by self-administered questionnaires in both surveys.

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Objectives: To assess the association of socioeconomic indicators with various chronic and acute illnesses and the utilization of public health care in a new town in Hong Kong, China.

Methods: Illness experience and socioeconomic and demographic data of 7570 residents from 2022 randomly selected households were collected through telephone interviews. The relationships between socioeconomic indicators and illnesses/choice of health care were explored using stepwise logistic regressions after adjusting for sex and age.

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Objective: Eye injury in the workplace is common worldwide. This study proposed to explore both risk and preventive factors re eye injuries in Hong Kong.

Design: Case-control study.

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To evaluate the relative validity of information on children's respiratory experience given by different informants, we examined and compared the relationship between low ventilatory function (defined as more than 1 standard deviation below the corresponding mean) and schoolchildren's respiratory symptoms or illnesses reported separately by the children and their parents, using a standard respiratory questionnaire. A total of 1,963 children aged 8-12 years from 12 primary schools in three districts of Hong Kong provided parent-completed and self-completed questionnaires, as well as acceptable spirometric measurements. Prevalence of low forced expiratory volume ratio (FEV1/FVC) and low forced expiratory flow rate between 25-75% of FVC (FEF25-75) were higher among those with either parent or child-reported symptoms/illnesses.

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Objectives: To determine awareness, treatment and control of hypertension in patients attending hospital clinics in China.

Design: A cross-sectional survey.

Patients And Setting: Patients over the age of 35 years, who were attending outpatient clinics in 18 hospitals of eight major cities of Northern and Southern China, were interviewed face-to-face between June and July 1999.

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Objective: This study examined the status of health-related behaviors among rural residents and the factors influencing the practice of such behaviors.

Methods: One thousand and ninety subjects aged 15 years or over in a rural community, Anhui Province, China were surveyed. A questionnaire was used to collect information on the health knowledge, attitude and behavior of the subjects.

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