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Featured researches published by Erik Trell.


BMJ | 1984

Risk factors for premature death in middle aged men

Bo Petersson; Erik Trell; Nels-Christian Henningsen; Bertil Hood

The causes of premature death and the associated risk factors were analysed in a cohort of 7935 middle aged men participating in a preventive population programme in Malmö. They were screened when aged 46-48 and then followed up for 3½-8 years. Two hundred and eighteen died, of whom 181 (83%) underwent necropsy. Three major causes of death were established: cancer in 61 (28%), deaths related to consumption of alcohol in 55 (25%), and coronary heart disease in 50 (23%). Distinctly different patterns of risk factors were found to be associated with each of the three main causes of premature death. In death due to coronary heart disease smoking (p=0·0062), serum cholesterol concentration (p=0·00014), serum triglyceride concentration (p=0·00013), systolic blood pressure (p=0·000012), and diastolic blood pressure (p=0·0021) were the strongest single determinants but diastolic blood pressure ceased to be a predictive factor in a multivariate analysis whereas all the other variables could be combined in a highly predictive logistic model. In death related to consumption of alcohol equal or even stronger associations were found for serum γ glutamyltransferase activity (p<0·0001), points scored in a questionnaire screening for alcoholism (p<0·0001), and, inversely, serum cholesterol (p=0·0046) and serum creatinine (p<0·0001) concentrations both when applied independently and when combined in a logistic model. In death due to cancer significant associations were found for serum urate concentration (p=0·023) and, inversely, serum cholesterol concentration (p=0·056-0·031). Malignant diseases and diseases related to consumption of alcohol were at least as prominent as cardiovascular disorders in causing premature death in the cohort of men studied. All three types of conditions are potentially avoidable and seem to be associated with significant and distinctive patterns of risk factors. These patterns should be used, as blood pressure and serum lipid concentrations already are, to predict the risk of premature death and indicate preventive measures.


Human Resources for Health | 2006

Measuring health inequalities in Albania: a focus on the distribution of general practitioners

Pavlos N. Theodorakis; Georgios D. Mantzavinis; Llukan Rrumbullaku; Christos Lionis; Erik Trell

BackgroundThe health workforce has a dynamically changing nature and the regular documentation of the distribution of health professionals is a persistent policy concern. The aim of the present study was to examine available human medical resources in primary care and identify possible inequalities regarding the distribution of general practitioners in Albania between 2000 and 2004.MethodsWith census data, we investigated the degree of inequality by calculating relative inequality indices. We plotted the Lorenz curves and calculated the Gini, Atkinson and Robin Hood indices and decile ratios, both before and after adjusting for mortality and consultation rates.ResultsThe Gini index for the distribution of general practitioners in 2000 was 0.154. After adjusting for mortality it was 0.126, while after adjusting for consultation rates it was 0.288. The Robin Hood index for 2000 was 11.2%, which corresponds to 173 general practitioners who should be relocated in order to achieve equality. The corresponding figure after adjusting for mortality was 9.2% (142 general practitioners), while after adjusting for consultation rates the number was 20.6% (315). These figures changed to 6.3% (100), 6.3% (115) and 19.8% (315) in 2004.ConclusionThere was a declining trend in the inequality of distribution of general practitioners in Albania between 2000 and 2004. The trend in inequality was apparent irrespective of the relative inequality indicator used. The level of inequality varied depending on the adjustment method used. Reallocation strategies for general practitioners in Albania could be the key in alleviating the inequalities in primary care workforce distribution.


Scandinavian Journal of Clinical & Laboratory Investigation | 1983

Comparison of gamma-glutamyltransferase and other health screening tests in average middle-aged males, heavy drinkers and alcohol non-users

Bo Peterson; Erik Trell; Hans Kristensson; Göran Fex; Maurice Yettra; Bertil Hood

Physical and biochemical health screening variables were compared in matched, middle-aged male samples of (a) ideological teetotallers, (b) average men, (c) self-reported alcohol abstainers, (d) low gamma-glutamyltransferase (GGT) activity, and (e-f) high GGT activity with or without admitted alcohol consumption background. The alcohol non-user groups and the individuals with low GGT had significantly lower mean values of relative body weight, pulse, systolic and diastolic blood pressure, haematocrit, serum urate, triglyceride, cholesterol, and zero and 120 min blood glucose than individuals with elevated GGT and alcohol overconsumption. The average men had intermediate levels. The frequency of increased values of the same tests was notably higher in the subjects with elevated GGT and heavy alcohol consumption than in the teetotallers and the other groups; and was lowest in the teetotallers.


Journal of Medical Systems | 1995

Distance from the primary health center: a GIS method to study geographical access to health care

Sunil Kohli; K. Sahlén; Åke Sivertun; Owe Löfman; Erik Trell; Ove Wigertz

Aerial distance from the dependent Primary Health Center is a crude but objective measure of geographical accessibility to Primary Health care facilities. This report describes a method for calculation of distances between the PHC and the population it serves using the data available from the local health authorities and the Swedish Central Statistical Bureau. The Swedish annual population registration records of 1991 and the property register available with the Central Statistical Bureau of Sweden formed the main data sources. By coupling the address in the population register to the property register each individual was mapped to the centroid of a property. The location of the PHCs as well as the areas covered by each were obtained from the local health authorities and mapped. By intersecting the population coverage with the PHC coverage the population for each PHC area was identified. Subsequently the distance to the PHC was calculated for each individual (property centroid). The population maps so generated can be linked to other databases to visualize and analyze the spatial dimension of health and disease. The methodology can be adapted for use with postal code districts, census enumeration tracts, or any other small area.


BMJ | 1982

Alcohol abstention and premature mortality in middle-aged men.

Bo Petersson; Erik Trell; H Kristenson

A series of middle-aged men were investigated for total mortality up to five years after completing a questionnaire on alcohol consumption administered during a preventive medical screening programme in Malmö, Sweden. The aim was to test the hypothesis that small amounts of alcohol are beneficial to general and cardiovascular health. Relative mortality was increased among the men who had reported non-use of alcohol in the screening questionnaire. Most of these men, however, had chronic disease as the reason for their abstention, or even a past history of alcoholism.


The American Journal of Medicine | 1984

Premature death and associated risk factors in urban middle-aged men

Bo Petersson; Erik Trell; Bertil Hood

The full range of premature mortality and associated risk factors was analyzed for a follow-up period of three and a half to eight years in a uniform group of 7,935 middle-aged males (46 to 48 years old at screening) participating between the years 1975 and 1979 in the preventive population program in Malmö (participation rate 76.7 percent). Of the 218 deaths that occurred, necropsy was performed in 181 (83.0 percent). Three major causes of death were established: cancer (61/218), alcohol-related deaths (55/218), and coronary heart disease (50/218). In these three main categories of male premature mortality, significant and distinctly differential risk factor patterns were found. In coronary heart disease, smoking (p = 0.0062), serum cholesterol level (p = 0.00014), serum triglyceride level (p = 0.00013), systolic blood pressure (p = 0.000012), and diastolic blood pressure (p = 0.0021) were the strongest single determinants, but the independent role of the diastolic blood pressure disappeared in a multivariate analysis whereas all the others could be combined in a highly predictive logistic model. In the alcohol-related group, equal or stronger risk factor associations were present for serum gamma-glutamyltransferase level (p less than 0.0001), questionnaire alcoholism screening response (p less than 0.0001) and, inversely, serum cholesterol level (p = 0.0046) and serum creatinine level (p less than 0.0001), all of which were independent and could be combined in an even more predictive logistic model than in the coronary heart disease group. In the cancer deaths, significant associations were found for serum urate level (p = 0.023) and, inversely, serum cholesterol level (p = 0.056 - 0.031). Malignant and alcohol-related diseases constituted at least equally prominent groups as the cardiovascular disorders of the total premature deaths that occurred during middle age in these cohorts of Malmö males. All of these conditions are potentially avoidable and seem to be associated with significant and distinctive risk factor patterns. It seems possible that these factors may be applied, in current alcohol-related disorders and in future malignant diseases, both as indicators of the respective risks and as signals and instruments for directed preventive measures like the previously well established and tested methods for the regulation of blood pressure, serum lipids levels, and so on.


Journal of Medical Systems | 1997

Logics and Logistics of Community Intervention Against Osteoporosis: An Evidence Basis

John Waller; Marianne Angbratt; Carina Blomberg; Ann-Charlotte Grahn Kronhed; Lasse Larsson; Owe Löfman; Margareta Möller; Göran Toss; Mats Foldevi; Erik Trell

Under designations like small areas action research and intervention, directed ‘ground-up’ health promotion and prevention in the population form an important part of the ongoing medical systems development. There is recent evidence of the success of community intervention against cardiovascular disease. In osteoporosis, however, there is still a lack of conclusive data on both the logics and logistics of such an approach. Since 1988, a county health policy program has been formulated and implemented in Östergötland, Sweden, following the principles and guidelines of the WHO HFA 2000 declaration. Vadstena (n ≍ 7,600) was chosen for a local and generalizable osteoporosis prevention project mediated by the primary care organization by means of health promotion and education in the community. In the present report we emphasize that community intervention is an important new advancement of the medical systems, where the basic research questions include operational and management aspects as equally vital and measurable requisites and results as other performance and outcome variables. We found that a community intervention trial against osteoporosis is both motivated and feasible and in this report wish to provide evidence on these crucial issues of logics and logistics.


Computer Methods and Programs in Biomedicine | 1997

Individuals living in areas with high background radon: a GIS method to identify populations at risk

Sunil Kohli; K. Sahlén; Owe Löfman; Åke Sivertun; Mats Foldevi; Erik Trell; Ove Wigertz

OBJECTIVE to identify and link populations and individuals that live within high risk areas. DESIGN census registers and disease registers which contain data on individuals can only give aggregate statistics relating to postal code districts, town, county or state boundaries. However environmental risk factors rarely, if ever, respect these man-made boundaries. What is needed is a method to rapidly identify individuals who may live within a described area or region and to further identify the disease(s) occurring among these individuals and/or in these areas. METHOD this paper describes a method for linking the standard registers available in Sweden, notably the residence-property addresses they contain and the geographical coordinate setting of these, to map the population as a point coverage. Using standard GIS methods this coverage could be linked, merged or intersected with any other map to create new subsets of population. Representation of populations down to the individual level by automatised spatialisation of available census data is in its simplicity a new informatics method which in the designated GIS medium adds a new power of resolution. RESULTS We demonstrate this using the radon maps provided by the local communes. The Swedish annual population registration records of 1991 for the county of Ostergötland and the property register available at the Central Statistical Bureau of Sweden formed the main data sources. By coupling the address in the population register to the property register each individual was mapped to the centroid of a property. By intersecting the population coverage with the radon maps, the population living in high, normal or low risk areas was identified and then analysed and stratified by commune, sex and age. The resulting tables can be linked to other database registers, to visualise and analyse geographical and related patterns. The methodology can be adapted for use with any other environmental map or small area. It can also be expanded to the fourth dimension by linking likewise available migration information to generate immediately coordinate-set, accumulated exposition and similar data.


Computer Methods and Programs in Biomedicine | 1992

Impact on the management and delivery of primary health care by a computer-based information system

Ashok Kumar Singh; Khalid Moidu; Erik Trell; Ove Wigertz

Timely and accurate information forms the basis for management to plan and for care providers to take appropriate action. We report from a developing country a research project aimed to strengthen the information infrastructure with a computer at a Primary Health Centre. The software (MCHS) was designed to assist the care providers in the information management for the Maternal and Child Health (MCH) programme activities. In Phase I, a baseline survey was conducted to identify the needs and target groups. In Phase II, the MCHS was integrated into routine delivery of MCH to monitor the target population and help in evaluation. The research projects impact is reflected in enhanced utilization of services and quality in care, as seen by reduction of dropouts from the immunization program. In economic terms, we see that the costs for a fully immunised child are reduced with reduction of dropouts; thus, the computer system contributes to quality assurance and cost effectiveness in delivery of care.


European Journal of General Practice | 1999

Background Paper: Health needs assessment in general practice: the Cretan approach

Christos Lionis; Erik Trell

A comprehensive practice-based and public health-based approach to needs assessment has been established during the last years in primary healthcare (PHC) in Crete, Greece. This article describes the developments and achievements in health monitoring in PHC in Crete. An attempt is made to discuss the methodology used by the Cretan Health Centres for assessment of needs and outcomes together with results. General information sources including continuous morbidity or mortality data recording, and data derived from community-oriented programmes were used in this assessment and the process is presented here. This Greek approach seems to be effective in helping GPs and PHC staff to set priorities and plan primary healthcare services, while a broader discussion over the role of the Greek and Mediterranean context remains.

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