A J Hedley
Biographic Data
| ID | 3582230 |
|---|---|
| NAME | A J Hedley |
| GIVEN NAMES | A J |
| FAMILY NAME | Hedley |
| SIGNATURE | HEDLEY A J |
| AFFILIATIONS | University of Hong Kong |
| ORCID | 0009-0000-2752-0936 |
| VERIFIED | Yes |
| TOTAL WORKS | 21 |
| TOTAL CITATIONS | 17 |
| WORKS AS AUTHOR | 21 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1982 |
| LATEST PUBLICATION YEAR | 2015 |
| H-INDEX | 2 |
The smoke-free legislation in Hong Kong
The findings in this study add to the evidence base, as summarised in the Surgeon General's report, extending the impact of effective smoke-free legislation to those aged 65 years or older and to cerebrovascular events in younger age groups. They also reinforced the need for comprehensive, enforced and effective smoke-free laws if the full extent of the health gains are to be achieved
Did the tobacco industry inflate estimates of illicit cigarette consumption in Asia? An empirical analysis
The industry-funded estimate inflates the likely levels of illicit cigarette consumption
Dietary habits and the short-term effects of air pollution on mortality in the Chinese population in Hong Kong
BACKGROUND: Both diet and air pollution are associated with mortality risks. However, no epidemiological study has examined the potential interaction between diet and air pollution on mortality. We assessed their interaction on an additive scale. METHODS: We analysed the data on daily concentrations of ambient air pollutants (PM(10), NO(2), SO(2) and O(3)) and a total of 23 484 deaths in 1998 in Hong Kong. A standardised questionnaire was used in…
SP4-22 Adherence to nicotine replacement therapy among Chinese smokers who had no intention to quit smoking
Introduction Evidence had shown that nicotine replacement therapy (NRT) is effective to help smokers quit. Many studies reported a positive linear relationship between adherence and cessation rates however, adherence to NRT among unmotivated smokers is uncertain. Methods Chinese smokers who aged ≥18, had no intention to quit within 4-week and had no contraindication to NRT were recruited and randomly allocated to Group A1, A2 and B in a RCT. Only…
Carcinogens in a puff’
Smoking scenes in movies, exploited by the tobacco industry to circumvent advertisement bans, are linked to adolescent smoking. Recently, a Hong Kong romantic comedy Love in a puff put smoking at centre stage, with numerous smoking scenes and words that glamourise smoking. Although WHO has issued guidelines on reducing the exposure of children to smoking in movies, none is adopted in Hong Kong. Comprehensive tobacco control strategies are urgentl…
Cost of tobacco-related diseases, including passive smoking, in Hong Kong
The health costs of tobacco use are high and represent a net loss to society. Passive smoking increases these costs by at least a quarter. This quantification of the costs of tobacco provides strong motivation for legislative action on smoke-free areas in the Asia Pacific Region and elsewhere
Secondhand smoke and respiratory ill health in current smokers
SHS exposure is strongly associated with increased acute respiratory symptoms and recent outpatient service utilisation in current smokers. If the association is causal, public health action to limit SHS exposure could also benefit smokers
Smoking, respiratory disease and health service utilisation
Which smokers use the smoking cessation Quitline in Hong Kong, and how effective is the Quitline
This first Quitline in Asia appears to be acceptable to Chinese smokers, with quit rate comparable to those of better funded Quitlines in the West. A low cost Quitline is a promising model for smoking cessation services in the East
Effectiveness and Efficiency of Opportunistic Cervical Cancer Screening
BACKGROUND: Several countries have adopted nationally organized cervical screening programs, but many continue with opportunistic screening. Comparison of the effectiveness and efficiency of the 2 systems is important for informing policy. OBJECTIVES: The objectives of this study were to assess the effectiveness and efficiency of an opportunistic cervical screening system, and to compare this with what could be achieved through an organized progr…
The impact of community psychological responses on outbreak control for severe acute respiratory syndrome in Hong Kong
Objective: To examine the public’s knowledge and perception of SARS and the extent to which various precautionary measures have been adopted. Design: Cross sectional survey. Setting: General population of Hong Kong at the height of the SARS outbreak (29 March to 6 April 2003). Participants: 1115 ethnic Chinese adults. Main results: Forty per cent did not recognise fomites as a possible mode of transmission whereas 55.1% believed that the infectio…
Leung Et Al. Respond
We agree with Tseng and Fang’s extrapolation of our calculations to Asian Americans but differ on their interpretation of the results. First, while Asian Americans suffered fewer breast cancer–related deaths, their mortality rates relative to incidence for women aged 50 years and older in 1996 (32.7/126.4 per 100 000 = 0.26) were in fact higher than those reported for Whites (78.2/367.4 per 100 000 = 0.21).1 Second, their assertion that “any canc…
Public opinion on smoke-free policies in restaurants and predicted effect on patronage in Hong Kong
This comprehensive survey-the first in Asia-shows strong community support for smoke-free dining and predicts an overall increase in the patronage of restaurants after the introduction of legislation for totally smoke-free restaurants
Will Screening Mammography in the East Do More Harm than Good
Objectives. We sought to systematically review the evidence for population-based mammography as applied to a Chinese population. Methods. Primary reports for meta-analysis were identified by a search of MEDLINE and the Cochrane Library. Outcome measures included breast cancer–related mortality, the number needed to be screened to prevent 1 death, and the positive predictive value of mammography. Results. Pooled relative risk for breast cancer–rel…
Does ozone have any effect on daily hospital admissions for circulatory diseases
Treatment of head louse infection is primarily through topical insecticides. However, there is growing evidence of resistance. A representative population sample was tested using biochemical and molecular methods; it was shown that, in Wales, treatments containing pyrethroids are likely to be less effective in controlling head louse infection than those containing organophosphates
Comparison between two districts of the effects of an air pollution intervention on bronchial responsiveness in primary school children in Hong Kong
STUDY OBJECTIVE: This study examined the impact on children's respiratory health of a government air quality intervention that restricted the sulphur content of fuels to 0.5% from July 1990 onwards. DESIGN/SETTING/PARTICIPANTS: This study examined the changes, one and two years after the introduction of the intervention, in airway hyperreactivity of non-asthmatic and non-wheezing, primary 4, 5, and 6, school children aged 9-12 years living in a p…
Economic burden of environmental tobacco smoke on Hong Kong families
STUDY OBJECTIVE: To examine the financial cost of doctor consultations for cough, phlegm, and wheeze in children living in a home where family members smoke compared with those not exposed to environmental tobacco smoke. To model these costs to provide the Territory of Hong Kong with estimates of potentially avoidable health care resource use. DESIGN: Cross sectional questionnaire survey. SUBJECTS AND SETTING: All children (10,615) in classes pri…
A comprehensive study of smoking in primary school children in Hong Kong
STUDY OBJECTIVE: To identify factors associated with smoking behaviour in primary school children in Hong Kong. DESIGN: A cross sectional survey in which both children and parents completed questionnaires. The main outcome measure was the smoking status of the children; and risk factors (knowledge of and attitude to smoking and demographic and socioeconomic background) were identified as predictors of ever/never smoking. SETTING AND SUBJECTS: Alt…
Recognition of cigarette brand names and logos by young children in Hong Kong
Objective-To examine the recognition of cigarette brand names and logos by Hong Kong primary school children. \nDesign - Cross-sectional survey with self-completed questionnaires examining smoking behaviour and recognition of 13 food, drink, cigarette, and toothpaste brand names and logos. Subjects - A total of 9591 primary school children (mean age =10.3; SD = 1.29) living in two districts of Hong Kong included in 1991 as part of a four-year res…
Smoking behaviour among female airline cabin crew from ten Asian countries
Objective - To identify factors related to the high prevalence of smoking behaviour among a sample of female airline cabin crew of Asian origin. Design - A questionnaire-based cross-sectional survey of 585 Asian women, aged 20-41 years working as experienced cabin crew for a major international airline. \nMain outcome measures - Subjects answered questions on their knowledge of the consequences of smoking, the per¬ceived effects of smoking, their…
The distribution and associations of blood pressure in an adolescent population
In this report we describe the distributions of blood pressure and its associations in adolescence. Six hundred and twenty-five subjects aged 13 to 18 were drawn from three general practices in different urban and rural settings. Systolic pressures were higher and rose with age in boys (mean = 119 mm Hg) compared with girls (mean = 114 mm Hg), who showed no age association. Diastolic pressures (phase 5) were higher in girls (mean = 64 mm Hg) than…
The impact of community psychological responses on outbreak control for severe acute respiratory syndrome in Hong Kong
Objective: To examine the public’s knowledge and perception of SARS and the extent to which various precautionary measures have been adopted. Design: Cross sectional survey. Setting: General population of Hong Kong at the height of the SARS outbreak (29 March to 6 April 2003). Participants: 1115 ethnic Chinese adults. Main results: Forty per cent did not recognise fomites as a possible mode of transmission whereas 55.1% believed that the infectio…
Will Screening Mammography in the East Do More Harm than Good
Objectives. We sought to systematically review the evidence for population-based mammography as applied to a Chinese population. Methods. Primary reports for meta-analysis were identified by a search of MEDLINE and the Cochrane Library. Outcome measures included breast cancer–related mortality, the number needed to be screened to prevent 1 death, and the positive predictive value of mammography. Results. Pooled relative risk for breast cancer–rel…
Smoking, respiratory disease and health service utilisation
Does ozone have any effect on daily hospital admissions for circulatory diseases
Treatment of head louse infection is primarily through topical insecticides. However, there is growing evidence of resistance. A representative population sample was tested using biochemical and molecular methods; it was shown that, in Wales, treatments containing pyrethroids are likely to be less effective in controlling head louse infection than those containing organophosphates
A comprehensive study of smoking in primary school children in Hong Kong
STUDY OBJECTIVE: To identify factors associated with smoking behaviour in primary school children in Hong Kong. DESIGN: A cross sectional survey in which both children and parents completed questionnaires. The main outcome measure was the smoking status of the children; and risk factors (knowledge of and attitude to smoking and demographic and socioeconomic background) were identified as predictors of ever/never smoking. SETTING AND SUBJECTS: Alt…
The distribution and associations of blood pressure in an adolescent population
In this report we describe the distributions of blood pressure and its associations in adolescence. Six hundred and twenty-five subjects aged 13 to 18 were drawn from three general practices in different urban and rural settings. Systolic pressures were higher and rose with age in boys (mean = 119 mm Hg) compared with girls (mean = 114 mm Hg), who showed no age association. Diastolic pressures (phase 5) were higher in girls (mean = 64 mm Hg) than…
The distribution and associations of blood pressure in an adolescent population
In this report we describe the distributions of blood pressure and its associations in adolescence. Six hundred and twenty-five subjects aged 13 to 18 were drawn from three general practices in different urban and rural settings. Systolic pressures were higher and rose with age in boys (mean = 119 mm Hg) compared with girls (mean = 114 mm Hg), who showed no age association. Diastolic pressures (phase 5) were higher in girls (mean = 64 mm Hg) than…
Smoking behaviour among female airline cabin crew from ten Asian countries
Objective - To identify factors related to the high prevalence of smoking behaviour among a sample of female airline cabin crew of Asian origin. Design - A questionnaire-based cross-sectional survey of 585 Asian women, aged 20-41 years working as experienced cabin crew for a major international airline. \nMain outcome measures - Subjects answered questions on their knowledge of the consequences of smoking, the per¬ceived effects of smoking, their…
Recognition of cigarette brand names and logos by young children in Hong Kong
Objective-To examine the recognition of cigarette brand names and logos by Hong Kong primary school children. \nDesign - Cross-sectional survey with self-completed questionnaires examining smoking behaviour and recognition of 13 food, drink, cigarette, and toothpaste brand names and logos. Subjects - A total of 9591 primary school children (mean age =10.3; SD = 1.29) living in two districts of Hong Kong included in 1991 as part of a four-year res…
A comprehensive study of smoking in primary school children in Hong Kong
STUDY OBJECTIVE: To identify factors associated with smoking behaviour in primary school children in Hong Kong. DESIGN: A cross sectional survey in which both children and parents completed questionnaires. The main outcome measure was the smoking status of the children; and risk factors (knowledge of and attitude to smoking and demographic and socioeconomic background) were identified as predictors of ever/never smoking. SETTING AND SUBJECTS: Alt…
Comparison between two districts of the effects of an air pollution intervention on bronchial responsiveness in primary school children in Hong Kong
STUDY OBJECTIVE: This study examined the impact on children's respiratory health of a government air quality intervention that restricted the sulphur content of fuels to 0.5% from July 1990 onwards. DESIGN/SETTING/PARTICIPANTS: This study examined the changes, one and two years after the introduction of the intervention, in airway hyperreactivity of non-asthmatic and non-wheezing, primary 4, 5, and 6, school children aged 9-12 years living in a p…
Economic burden of environmental tobacco smoke on Hong Kong families
STUDY OBJECTIVE: To examine the financial cost of doctor consultations for cough, phlegm, and wheeze in children living in a home where family members smoke compared with those not exposed to environmental tobacco smoke. To model these costs to provide the Territory of Hong Kong with estimates of potentially avoidable health care resource use. DESIGN: Cross sectional questionnaire survey. SUBJECTS AND SETTING: All children (10,615) in classes pri…
Does ozone have any effect on daily hospital admissions for circulatory diseases
Treatment of head louse infection is primarily through topical insecticides. However, there is growing evidence of resistance. A representative population sample was tested using biochemical and molecular methods; it was shown that, in Wales, treatments containing pyrethroids are likely to be less effective in controlling head louse infection than those containing organophosphates
Public opinion on smoke-free policies in restaurants and predicted effect on patronage in Hong Kong
This comprehensive survey-the first in Asia-shows strong community support for smoke-free dining and predicts an overall increase in the patronage of restaurants after the introduction of legislation for totally smoke-free restaurants
Will Screening Mammography in the East Do More Harm than Good
Objectives. We sought to systematically review the evidence for population-based mammography as applied to a Chinese population. Methods. Primary reports for meta-analysis were identified by a search of MEDLINE and the Cochrane Library. Outcome measures included breast cancer–related mortality, the number needed to be screened to prevent 1 death, and the positive predictive value of mammography. Results. Pooled relative risk for breast cancer–rel…
The impact of community psychological responses on outbreak control for severe acute respiratory syndrome in Hong Kong
Objective: To examine the public’s knowledge and perception of SARS and the extent to which various precautionary measures have been adopted. Design: Cross sectional survey. Setting: General population of Hong Kong at the height of the SARS outbreak (29 March to 6 April 2003). Participants: 1115 ethnic Chinese adults. Main results: Forty per cent did not recognise fomites as a possible mode of transmission whereas 55.1% believed that the infectio…
Leung Et Al. Respond
We agree with Tseng and Fang’s extrapolation of our calculations to Asian Americans but differ on their interpretation of the results. First, while Asian Americans suffered fewer breast cancer–related deaths, their mortality rates relative to incidence for women aged 50 years and older in 1996 (32.7/126.4 per 100 000 = 0.26) were in fact higher than those reported for Whites (78.2/367.4 per 100 000 = 0.21).1 Second, their assertion that “any canc…
Which smokers use the smoking cessation Quitline in Hong Kong, and how effective is the Quitline
This first Quitline in Asia appears to be acceptable to Chinese smokers, with quit rate comparable to those of better funded Quitlines in the West. A low cost Quitline is a promising model for smoking cessation services in the East
Effectiveness and Efficiency of Opportunistic Cervical Cancer Screening
BACKGROUND: Several countries have adopted nationally organized cervical screening programs, but many continue with opportunistic screening. Comparison of the effectiveness and efficiency of the 2 systems is important for informing policy. OBJECTIVES: The objectives of this study were to assess the effectiveness and efficiency of an opportunistic cervical screening system, and to compare this with what could be achieved through an organized progr…
Secondhand smoke and respiratory ill health in current smokers
SHS exposure is strongly associated with increased acute respiratory symptoms and recent outpatient service utilisation in current smokers. If the association is causal, public health action to limit SHS exposure could also benefit smokers
Smoking, respiratory disease and health service utilisation
Cost of tobacco-related diseases, including passive smoking, in Hong Kong
The health costs of tobacco use are high and represent a net loss to society. Passive smoking increases these costs by at least a quarter. This quantification of the costs of tobacco provides strong motivation for legislative action on smoke-free areas in the Asia Pacific Region and elsewhere
Carcinogens in a puff’
Smoking scenes in movies, exploited by the tobacco industry to circumvent advertisement bans, are linked to adolescent smoking. Recently, a Hong Kong romantic comedy Love in a puff put smoking at centre stage, with numerous smoking scenes and words that glamourise smoking. Although WHO has issued guidelines on reducing the exposure of children to smoking in movies, none is adopted in Hong Kong. Comprehensive tobacco control strategies are urgentl…
SP4-22 Adherence to nicotine replacement therapy among Chinese smokers who had no intention to quit smoking
Introduction Evidence had shown that nicotine replacement therapy (NRT) is effective to help smokers quit. Many studies reported a positive linear relationship between adherence and cessation rates however, adherence to NRT among unmotivated smokers is uncertain. Methods Chinese smokers who aged ≥18, had no intention to quit within 4-week and had no contraindication to NRT were recruited and randomly allocated to Group A1, A2 and B in a RCT. Only…
Dietary habits and the short-term effects of air pollution on mortality in the Chinese population in Hong Kong
BACKGROUND: Both diet and air pollution are associated with mortality risks. However, no epidemiological study has examined the potential interaction between diet and air pollution on mortality. We assessed their interaction on an additive scale. METHODS: We analysed the data on daily concentrations of ambient air pollutants (PM(10), NO(2), SO(2) and O(3)) and a total of 23 484 deaths in 1998 in Hong Kong. A standardised questionnaire was used in…
The smoke-free legislation in Hong Kong
The findings in this study add to the evidence base, as summarised in the Surgeon General's report, extending the impact of effective smoke-free legislation to those aged 65 years or older and to cerebrovascular events in younger age groups. They also reinforced the need for comprehensive, enforced and effective smoke-free laws if the full extent of the health gains are to be achieved
Did the tobacco industry inflate estimates of illicit cigarette consumption in Asia? An empirical analysis
The industry-funded estimate inflates the likely levels of illicit cigarette consumption
Medicine (20 works) · Environmental health (16 works) · Population (14 works) · Demography (10 works) · Smoking Behavior and Cessation (9 works) · Internal Medicine (8 works) · Business (5 works) · Demography (5 works) · Internal Medicine (5 works) · Odds ratio (5 works)