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Biomedical subjects

A Bauman

Publications and source records attributed to A Bauman.

At least 55 records · Page 3Linked to original sources
PubMed2000

Factors associated with delayed tobacco uptake among Vietnamese/Asian and Arabic youth in Sydney, NSW.

OBJECTIVE: To describe the smoking behaviour and possible reasons for delayed uptake of tobacco smoking among Arabic and Vietnamese/Asian speaking senior school students in Sydney METHOD: A descriptive study involving four adult in-depth interviews and five student focus groups plus a quantitative survey of 2,573 school students attending Years 10 and 11 from 12 high schools with high Vietnamese and Arabic populations was conducted in Sydney in 1998. Self-reported smoking behaviour and peer, parent, school and cultural background information was collected. RESULTS: Students who smoke were more likely to have more than $20 a week pocket money, be from an English-speaking background, have no rules at home about smoking, have family members who smoke, not feel close to their father, spend three or more evenings a week out with friends, and have negative perceptions of the school environment and of the level of teacher support. They were less likely to smoke if they perceived their peers to be unsupportive. CONCLUSIONS: These results confirm the delayed uptake of smoking among students from a Vietnamese/Asian and Arabic-speaking backgrounds compared with those from an English-speaking background. A number of family and school factors were associated with smoking. IMPLICATIONS: Positive parental modelling, active parenting including awareness of or supervision of student leisure time, strict rules about not smoking and less pocket money are important strategies for preventing smoking among all adolescents.

Acculturation↗
PubMed1999

Bullying behaviour and psychosocial health among school students in New South Wales, Australia: cross sectional survey.

OBJECTIVES: To examine the prevalence of bullying behaviours in schoolchildren and the association of bullying with psychological and psychosomatic health. DESIGN: Cross sectional survey. SETTING: Government and non-government schools in New South Wales, Australia. PARTICIPANTS: 3918 schoolchildren attending year 6 (mean age 11.88 years), year 8 (13.96), and year 10 (15.97) classes from 115 schools. MAIN OUTCOME MEASURES: Self reported bullying behaviours and psychological and psychosomatic symptoms. RESULTS: Almost a quarter of students (23.7%) bullied other students, 12.7% were bullied, 21.5% were both bullied and bullied others on one or more occasions in the last term of school, and 42.4% were neither bullied nor bullied others. More boys than girls reported bullying others and being victims of bullying. Bullying behaviour was associated with increased psychosomatic symptoms. Bullies tended to be unhappy with school; students who were bullied tended to like school and to feel alone. Students who both bullied and were bullied had the greatest number of psychological and psychosomatic symptoms. CONCLUSIONS: Being bullied seems to be widespread in schools in New South Wales and is associated with increased psychosomatic symptoms and poor mental health. Health practitioners evaluating students with common psychological and psychosomatic symptoms should consider bullying and the student's school environment as potential causes.

Adolescent↗
PubMed1999

Epidemiology of substance use in adolescence: prevalence, trends and policy implications.

This paper reviews the epidemiology of substance use among adolescents. There is a public health imperative in all countries to assess the population rates of tobacco, alcohol and illicit drug use among adolescents. In addition, monitoring trends over time may reflect the net effects of activities and programs carried out to prevent adolescent substance use. School based surveys provide prevalence estimates of substance use, but do not capture street and homeless youth and other high risk adolescents not found in the school environment. Overall, the results of this review suggest that tobacco, hazardous alcohol use, and most categories of illicit drug use have shown consistent increases in prevalence since about 1990 in most developed countries, for school-based adolescents, suggesting that the substance use problem among adolescents remains unsolved. These trends are remarkably similar across substance use behaviours, and among most developed countries, although limited data has emanated from adolescents in the developing world. Interventions to reduce or prevent substance use have shown mixed results, with those focusing on the adolescents' social environment showing the most promise. Broader public health approaches, including the linkage to community-wide prevention, and greater enforcement or regulatory and legislative approaches to tobacco and alcohol access are future directions for research and practice.

Adolescent↗
PubMed1999

Intra-abdominal hypertension is an independent cause of postoperative renal impairment.

HYPOTHESIS: Intra-abdominal hypertension exerts an effect on renal function independent of other confounding variables. DESIGN: A prospective study of all patients admitted to an intensive care unit following abdominal surgery was undertaken between September 1, 1994, and July 31, 1997, in a single university hospital. MAIN OUTCOME MEASURES: Intra-abdominal pressure (IAP) was measured every 8 hours (normal IAP, 0-17 mm Hg); 18 mm Hg or higher was considered increased. Forward stepwise logistic regression determined whether intra-abdominal hypertension is an independent cause of renal impairment. RESULTS: A total of 263 patients (174 after emergency surgery), whose mean +/- SD age was 61.0 +/- 18.7 years and Acute Physiology and Chronic Health Evaluation II score was 14.6 +/- 7.7, were studied. Intra-abdominal pressure was increased in 107 (40.7%) of the 263 patients. Renal impairment occurred in 35 (32.7%) of the 107 patients with intra-abdominal hypertension and in 22 (14.1%) of the 156 with a normal IAP (odds ratio, 1.62-5.42). Using the Wald maximizing model, renal impairment was independently associated with 4 antecedent factors: hypotension (P= .09), sepsis (P = .006), age older than 60 years (P = .03), and increased IAP (P = .004). CONCLUSIONS: To our knowledge, for the first time in a large clinical study, IAP has been shown to be an independent cause of renal impairment, and it ranks in importance after hypotension, sepsis, and age older than 60 years. Surgeons need to be aware of the importance of intra-abdominal hypertension in patients postoperatively.

Abdomen↗
PubMed1999

Insufficiently active Australian college students: perceived personal, social, and environmental influences.

BACKGROUND: A sustainable pattern of participation in physical activity is important in the maintenance of health and prevention of disease. College students are in transition from an active youth to a more sedentary adult behavior pattern. METHODS: We assessed self-reported physical activity and other characteristics in a sample of 2,729 male and female students (median age was 20 years) recruited from representative courses and year levels at four Australian College campuses. They were categorized as sufficiently or insufficiently active, using estimates of energy expenditure (kcal/week) derived from self-reported physical activity. Personal factors (self-efficacy, job status, enjoyment), social factors (social support from family/friends), and environmental factors (awareness of facilities, gym membership) were also assessed. RESULTS: Forty-seven percent of females and 32% of males were insufficiently active. For females, the significant independent predictors of being insufficiently active were lower social support from family and friends, lower enjoyment of activity, and not working. For males, predictors were lower social support from family and friends, lower enjoyment of activity, and being older. CONCLUSIONS: Factors associated with physical activity participation (particularly social support from family and friends) can inform physical activity strategies directed at young adults in the college setting.

Adolescent↗
PubMed1999

The Hettinger hand vibration test, vasospasm, and glaucoma.

Ocular vasospasm in response to local and/or systemic stimuli may contribute to ischemia of the optic nerve. The Hettinger hand vibration test was applied to patients with and without glaucoma to identify subgroups with a high systemic vasospastic tendency. A total of 580 subjects were tested (113 controls, 86 glaucoma suspects, 270 with primary open-angle glaucoma, 71 with secondary open-angle glaucoma, 30 with normal-tension glaucoma, and 10 with angle-closure glaucoma). The frequency distribution curve of Hettinger scores (HS) was bimodal, suggesting two distinct groups. Within each diagnostic group, a subpopulation with a high HS could be identified. Multivariate analysis demonstrated a significant association between the nonselective topical beta-blocker timolol and higher mean HS (P = 0.04) and a significantly higher proportion of subjects with HS of 1.5 or more (P = 0.01). Although subjects taking systemic beta1-selective blockers had significantly lower mean HS (P = 0.04), the proportion of patients with HS of 1.5 or more was not affected significantly by topical and systemic beta1-selective blocker use. Whereas topical nonselective beta-blockers may have an adverse effect on vasospastic tendency, systemic beta1-selective blockers may be partially protective against this effect.

Adrenergic beta-Antagonists↗
PubMed1999

Health behaviour and the school environment in New South Wales, Australia.

The relationship between the school environment and health has infrequently been examined. This study sought to examine the association between school students' perceptions of their school environment, teachers' and peers' support and their health behaviours. A cross sectional descriptive survey by supervised self-administration was conducted in 1996 based on the international WHO collaborative survey of school children's health and lifestyle (the HBSC Study) and extended in an Australian setting. Randomly sampled primary and secondary schools from Catholic, Independent and Government education sectors throughout New South Wales (NSW), Australia, were invited to participate. The final sample included 3918 school students attending Year 6 (primary school), Year 8 and Year 10 (high school) from 115 schools. The main outcome measures were self-reported health status and 7 health behaviours (tobacco use, alcohol use, physical activity, dental hygiene, nutritional intake, seat belt and bicycle helmet use). Independent variables included student perceptions of the school environment, perceptions of teachers' and peers' support. Girls, Year 6 students and students who have less than $19 a week to spend were significantly more likely to have positive perceptions towards their school environment, teacher(s) and peers. Students who had positive perceptions regarding their school environment and perceived their teachers as supportive were significantly more likely to engage in health promoting behaviours adjusting for age, sex and average weekly pocket money. A supportive peer environment was not associated with positive health behaviour. Health promotion practitioners need to consider the impact of the school environment on health behaviours of school students. In particular, practitioners should consider intervention models that improve the school environment as a key strategy within a health promoting school.

Adolescent↗
PubMed1999

Physical activity of adult Australians: epidemiological evidence and potential strategies for health gain.

Physical activity is now considered a major modifiable factor for preventing and reducing the mortality from cardiovascular disease, diabetes and some cancers, as well as improving musculoskeletal and mental health. Increasing epidemiological evidence confirms the health benefits of moderate regular physical activity. A dose response relationship remains, with greater benefits derived from increased intensity and duration of physical activity. Clinicians and exercise scientists should consider physical inactivity as important a risk factor as hypertension or elevated serum cholesterol levels. The broader public health objectives are to measure and monitor physical activity levels among all Australians, and to develop interventions to increase regular participation for the whole population. Population Campaigns and behaviour change programs are needed to increase the prevalence of participation in physical activity.

Arthritis↗
PubMed1999

Evaluation of oculokinetic perimetry.

BACKGROUND AND METHOD: Oculokinetic perimetry (OKP) was performed on 98 patients (187 eyes) using the Damato 26-point glaucoma screening chart. Results were compared with those obtained from a 24-2 full threshold test on a Humphrey Field Analyser (HFA). RESULTS: In its ability to detect pathology in individual eyes, OKP had a sensitivity of 75.0% and a specificity of 71.4%. To detect glaucoma, OKP demonstrated a sensitivity of 86.0% and a specificity of 56.1%. The number of OKP defects detected increased with increasing HFA mean defect and corrected pattern standard deviation. Whereas moderate and severe field defects were almost always detected, smaller and shallower glaucoma defects were often missed. CONCLUSION: The fall in sensitivity and specificity of the OKP chart in identifying milder glaucomatous field defects diminishes its value as a screening test. However, its introduction into wider use in the community may increase awareness of glaucoma amongst general practitioners and members of the public, and help to detect previously undiagnosed glaucoma with moderate to severe damage. A normal OKP finding does not exclude the presence of early glaucoma. Combined with ophthalmoscopy, OKP may improve glaucoma detection rates amongst non-ophthalmologists.

Adolescent↗
PubMed1999

Lay beliefs about the preventability of major health conditions.

Beliefs about the extent to which health problems can be prevented reflect an understanding that preventive measures can reduce adverse health events and the level of control individuals perceive that they hold over the factors that affect their health. A population survey of 1659 people conducted in 1995 in south western Sydney, Australia, found that only child drownings, tooth decay, skin cancer, and burns and scalds were considered all or mostly preventable by more than 50% of the sample. The majority of respondents did not believe that heart attacks, cervical cancer, high blood pressure, serious road injury, lung cancer and asthma deaths were all or mostly preventable. Logistic regression analysis showed that people born in an English speaking country, those with more than 10 years of education and men were significantly more likely to recognize a number of key conditions as highly preventable. The findings suggest that, in spite of the range of prevention efforts in Australia to date, these are not matched by strong beliefs within the community that prevention is possible. Communication of the opportunities and methods for prevention needs to be improved, particularly among certain population groups. The findings also indicate a need to examine social and environmental factors which are potentially reducing confidence, and subsequently and adoption of preventive behaviours.

Adolescent↗
PubMed1999

Utility of pwc75% as an estimate of aerobic power in epidemiological and population-based studies.

PURPOSE: Studies of physical activity often assess physical work capacity (pwc) and this is usually achieved with extrapolated estimates of maximal aerobic power (VO2max). However, extrapolation beyond the measured values may be problematic, particularly for older subjects. On a population basis, interpolated measures of pwc may provide the same information and avoid the errors associated with extrapolated measures. METHODS: This study assessed extrapolated (pwc at 150 and 170 beats x min(-1) heart rate (HR) and estimated VO2max) and interpolated (pwc at 75% of maximum HR: pwc75%) measures of pwc in a population sample of 1043 men and women aged 18-78 yr. Each measure was assessed to determine whether it showed the key characteristics of measured VO2max: a decrease with age and an increase with reported physical activity. RESULTS: Both pwc150 and pwc170 did not decline with age, estimated VO2max (est.VO2max) exhibited a spurious plateau for older age groups, while pwc75% declined approximately 9% per decade of age. All four pwc measures detected a significant difference (approximately 10-15%) between inactive and active groups classified according to a questionnaire of leisure time physical activity. CONCLUSIONS: Although the pwc75% test requires direct validation, these results suggest that it may be a useful submaximal exercise measure for epidemiological studies of aerobic power.

Adult↗
PubMed1999

Socio-economic, migrant and geographic differentials in coronary heart disease occurrence in New South Wales.

OBJECTIVE: This study examines the variation in coronary heart disease (CHD) mortality and acute myocardial infarction (AMI) by socio-economic status (SES), country of birth (COB) and geography (urban/rural) in the total population of New South Wales (Australia) in 1991-95. METHOD: CHD deaths and AMI are from complete enumerations of deaths and hospital admissions, respectively; and population denominators are from census information. Data are examined separately by sex, and comparisons of SES groups (based on municipalities), COB and region are analysed using Poisson regression, after adjustment for age. RESULTS: The study identified higher risk for AMI admissions and CHD mortality in lower SES populations with significant linear trends, for both sexes, adjusted for age, region and COB. According to the population attributable fractions (PAF), 23-41% of the risk of CHD occurrence is due to SES lower than the highest quartile. The higher age-adjusted risk for CHD occurrence in rural and remote populations for both sexes, compared with urban communities, was lessened by adjustment for COB, and all but abolished when also adjusted for SES.COB analysis indicated significantly lower age-adjusted AMI admissions and CHD mortality compared with the Australian-born. CONCLUSIONS: Higher risks for CHD in rural populations compared with the capital city (Sydney) are due, in part, to lower SES, lesser migrant composition. IMPLICATIONS: Strategies for reducing CHD differentials should consider demographic factors and the fundamental need to reduce socio-economic inequalities, as well as targeting appropriate prevention measures.

Adult↗
PubMed1999

Substance use and socio-demographic factors among aboriginal and Torres Strait Islander school students in New South Wales.

OBJECTIVE: To estimate prevalence rates of substance use and associated socio-demographic factors among Aboriginal and Torres Strait Islander (ATSI) secondary students. METHOD: This paper presents ATSI data from population-based school surveys conducted in 1996, 1992 and 1989 in New South Wales and replicates identical analysis using the three datasets. RESULTS: The proportion of ATSI students in each survey ranged from 2.5% to 3.8%. After adjusting for age, gender and socio-demographic factors, ATSI students were more likely to smoke cigarettes, and to have tried cannabis and other illicit substances. CONCLUSIONS: This study suggests that Aboriginal and Torres Strait Islander students were more susceptible to, and maintained a higher rate of, substance use than non-Aboriginal and Torres Strait Islander youth. Socio-demographic differences between Aboriginal and non-Aboriginal students in age, rural/urban status, living with both parents, reporting poor school performance, low parental supervision and high school absenteeism remained significantly associated with Aboriginal status and substance use. IMPLICATIONS: This is one of the first studies examining substance use in a large and representative sample of in-school ATSI youth. These results provide information useful for public health advocates, and require policy changes more likely to reduce substance use among ATSI youth.

Adolescent↗
PubMed1999

Geographical influences upon physical activity participation: evidence of a 'coastal effect'.

OBJECTIVE: To examine the association between geographical proximity to the coast and physical activity participation levels. METHOD: Using stratified random sampling, a telephone survey was carried out in 1994 with 1,000 adults in each of the 16 health service regions in New South Wales (N = 16,178). Physical activity levels were measured through self-report of the frequency and duration of walking, moderate and vigorous activities in the two weeks preceding the survey. Logistic regression modelling was carried out to examine the association between physical activity and 'coastal' location of residence, adjusting for age, sex, employment status, education level and country of birth. RESULTS: After adjusting for other demographic factors, respondents who lived in a coastal postcode were 23% less likely to be classified as sedentary, 27% more likely to report levels of activity considered adequate for health, and 38% more likely to report high (vigorous) levels of physical activity than those who lived inland. Each of these associations was significant at the 0.05 level. CONCLUSIONS: Characteristics of the physical environment in coastal postcodes are related to physical activity participation. IMPLICATIONS: Physical environments may contribute to physical activity participation. Further efforts to conceptualise and measure these environmental influences is warranted. Public health efforts to promote physical activity should consider aspects of the physical environment as part of any intervention.

Adult↗
PubMed1999

Infants' sensitivity to allophonic cues for word segmentation.

A series of four experiments was conducted to determine whether English-learning infants can use allophonic cues to word boundaries to segment words from fluent speech. Infants were familiarized with a pair of two-syllable items, such as nitrates and night rates and then were tested on their ability to detect these same words in fluent speech passages. The presence of allophonic cues to word boundaries did not help 9-month-olds to distinguish one of the familiarized words from an acoustically similar foil. Infants familiarized with nitrates were just as likely to listen to a passage about night rates as they were to listen to one about nitrates. Nevertheless, when the passages contained distributional cues that favored the extraction of the familiarized targets, 9-month-olds were able to segment these items from fluent speech. By the age of 10.5 months, infants were able to rely solely on allophonic cues to locate the familiarized target words in passages. We consider what implications these findings have for understanding how word segmentation skills develop.

Attention↗
PubMed1998

Asthma and other atopic diseases in Australian children. Australian arm of the International Study of Asthma and Allergy in Childhood.

OBJECTIVE: To determine the prevalence of asthma, eczema and allergic rhinitis in Australian schoolchildren using the protocol of the International Study of Asthma and Allergy in Childhood (ISAAC). DESIGN: Questionnaire-based survey. SETTING: Melbourne, Sydney, Adelaide (in winter-spring, 1993) and Perth (in winter-spring, 1994). SUBJECTS: All children in school years 1 and 2 (ages 6-7 years) or in year 8 (ages 13-14 years), attending a random sample of 272 schools, stratified by age and city. MAIN OUTCOME MEASURES: Parent-reported (for 6-7 year olds) or self-reported (for 13-14 year olds) symptoms of atopic disease in the previous 12 months, or ever; treatment of asthma; and country of birth. RESULTS: 10,914 questionnaires were completed for 6-7 year olds and 12,280 for 13-14 year olds (84% and 94% response rates, respectively). Prevalence of wheeze in the past 12 months was 24.6% for the 6-7 year olds and 29.4% for the 13-14 year olds, and, among 6-7 year olds, was significantly higher in boys (27.4%) than girls (21.7%). Children born in Australia were more likely to report current wheeze than those born elsewhere (6-7 year olds: odds ratio [OR], 1.82; 95% confidence interval [CI] 1.55-2.15; and 13-14 year olds: OR, 1.88; 95% CI, 1.68-2.11). Prevalences of current eczema and allergic rhinitis were 10.9% and 12.0%, respectively, for the 6-7 year olds, and 9.7% and 19.6%, respectively, for the 13-14 year olds. Asthma, eczema and rhinitis coexisted in 1.8% of 6-7 year olds and 2.8% of 13-14 year olds. CONCLUSION: This study provides evidence that asthma prevalence in Australian schoolchildren is continuing to increase and is higher among Australian-born children than among those born elsewhere. Asthma, eczema and allergic rhinitis coexist to a lesser extent than expected. These results form the basis for future Australian and international comparisons.

Adolescent↗
PubMed1998

Environmental and policy interventions to promote physical activity.

BACKGROUND: Because most adults in industrialized countries do not meet physical activity guidelines, population-wide interventions are needed. Environmental and policy interventions are based on ecological models of behavior and have the potential to influence entire populations. Ecological models are particularly applicable to physical activity because the behavior must be done in specific physical settings. Cross-sectional data indicate that environmental and policy variables are associated with physical activity behaviors of young people and adults. METHOD: Seven published evaluations of environmental and policy interventions to increase physical activity were reviewed. RESULTS: Two studies showed that placing signs encouraging stair use can be effective. Quasi-experimental evaluations provided limited evidence that broad environmental changes can be effective. Large-scale policy interventions are currently being conducted in several countries. PROPOSED MODEL: A model describing the development of policy and environmental interventions is proposed, in the hope of stimulating more research in this area. Advocacy or planning groups identify and work with agencies that control policies and environments that can be altered to increase physical activity. Educational and policy/environmental interventions are seen as complementary. CONCLUSION: Lack of conceptual models and the inherent difficulties of evaluation have hampered research on environmental and policy interventions. Further research is needed, and practitioners and researchers should work together to evaluate programs.

Adult↗