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1.
J Interprof Care ; 38(4): 675-694, 2024.
Article in English | MEDLINE | ID: mdl-38757957

ABSTRACT

Interprofessional collaboration (IPC) is essential for high-quality palliative care (PC) for persons with dementia. The aim of this scoping review was to identify IPC approaches in palliative dementia care and explore the elements constituting these approaches. We performed a search in PubMed, CINAHL, and PsychINFO using the Joanna Briggs Institute Reviewers' manual and PRISMA guidelines, and conducted content analysis of the included articles. In total, 28 articles were included, which described 16 IPC approaches in palliative dementia care. The content analysis revealed three overall elements of these approaches: 1) collaborative themes, 2) collaborative processes, and 3) resources facilitating collaboration. Frequently reported collaborative themes embraced pain management and providing care in the dying phase. These themes were addressed through intertwined collaborative processes including communication, coordination, assessing and monitoring, and reflecting and evaluating. To ensure optimal IPC in palliative dementia care, various resources were required, such as PC knowledge, skills to manage symptoms, skills to communicate with collaborators, and a facilitating environment. In conclusion, the identified IPC approaches in palliative dementia care involve diverse collaborating professionals who mainly manage symptoms, prepare for the dying phase and require material and immaterial resources to enable optimal IPC in palliative dementia care.


Subject(s)
Cooperative Behavior , Dementia , Interprofessional Relations , Palliative Care , Humans , Dementia/therapy , Palliative Care/organization & administration , Communication , Patient Care Team/organization & administration , Pain Management
2.
Ultrasound Obstet Gynecol ; 62(4): 531-539, 2023 10.
Article in English | MEDLINE | ID: mdl-37289947

ABSTRACT

OBJECTIVE: To develop a prediction model for the development of hypertension in the decade following pre-eclampsia in women who were normotensive shortly after pregnancy. METHODS: This was a longitudinal cohort study of formerly pre-eclamptic women attending a university hospital in The Netherlands between 1996 and 2019. We developed a prediction model for incident hypertension using multivariable logistic regression analysis. The model was validated internally using bootstrapping techniques. RESULTS: Of 259 women, 185 (71%) were normotensive at the first cardiovascular assessment, at a median of 10 (interquartile range (IQR), 6-24) months after a pre-eclamptic pregnancy, of whom 49 (26%) had developed hypertension by the second visit, at a median of 11 (IQR, 6-14) years postpartum. The prediction model, based on birth-weight centile, mean arterial pressure, total cholesterol, left ventricular mass index and left ventricular ejection fraction, had good-to-excellent discriminative ability, with an area under the receiver-operating-characteristics curve (AUC) of 0.82 (95% CI, 0.75-0.89) and an optimism-corrected AUC of 0.80. The sensitivity and specificity of our model to predict hypertension were 98% and 34%, respectively, and positive and negative predictive values were 35% and 98%, respectively. CONCLUSIONS: Based on five variables, we developed a good-to-excellent predictive tool to identify incident hypertension following pre-eclampsia in women who were normotensive shortly after pregnancy. After external validation, this model could have considerable clinical utility in tackling the cardiovascular legacy of pre-eclampsia. © 2023 The Authors. Ultrasound in Obstetrics & Gynecology published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.


Subject(s)
Hypertension , Pre-Eclampsia , Pregnancy , Female , Humans , Longitudinal Studies , Stroke Volume , Ventricular Function, Left
3.
Tijdschr Gerontol Geriatr ; 52(1)2021 Mar 23.
Article in Dutch | MEDLINE | ID: mdl-34057360

ABSTRACT

The COVID-19 pandemic and its impact on older and frail people underlines the importance of advance care planning (ACP). ACP is a dynamic communication process involving patients, families and healthcare providers, which serves to discuss and document wishes and goals for future care. Currently, ACP practice is often suboptimal. This implies that important decisions about care and treatment may need to be made acutely in crises. Many factors contribute to suboptimal ACP practice. One such factor is ambiguity regarding roles and responsibilities of different disciplines in the ACP-process. The perception that having ACP conversations is primarily a physician's task is a misconception. Specific skills that could contribute to a holistic and person-centered ACP-process are largely lacking in nursing curricula and therefore, may be insufficient and under-utilized. For instance, nursing staff could involve persons in conversations about meaning, quality of life, loss and grief as a part of ACP. Moreover, they may communicate a patient's wishes to other healthcare providers including physicians. Acknowledgement of this potential role, by physicians as well as by nursing staff themselves, is needed for ACP to become a truly interprofessional process.


Subject(s)
Advance Care Planning , COVID-19 , Humans , Nurse's Role , Pandemics , Quality of Life , SARS-CoV-2
4.
Nurse Educ Pract ; 48: 102866, 2020 Oct.
Article in English | MEDLINE | ID: mdl-32950940

ABSTRACT

Adequate interprofessional collaboration is essential to provide high quality palliative dementia care across different settings. Within interprofessional collaboration, nurses are the frontline healthcare professionals (HCPs), who interact closely with people with dementia, their loved ones, and other HCPs. A survey was conducted to explore the needs of nurses regarding interprofessional collaboration in home care (HC) organisations, nursing homes (NHs) and during NH admissions. The survey identified the perceived quality of and preferred needs regarding interprofessional collaboration. In total, 384 participants (53.9% home care nurses) completed the survey. The most frequently reported collaboration needs in HC organisations and NH were optimal communication content e.g. information transfer and short communication lines (being able to easily contact other disciplines), and coordination e.g. one contact person, and clear task division and responsibilities). During NH admissions, it was important to create transparency about agreements concerning end-of-life wishes, optimize nurse-to-nurse handover during NH admissions (through performing visits prior to admissions, and receiving practical information on how to guide relatives), and improve coordination (e.g. one contact person). In conclusion, the key collaboration needs were organising central coordination, establishing optimal communication, and creating transparency on end-of-life care agreements.


Subject(s)
Dementia , Hospice and Palliative Care Nursing , Delivery of Health Care , Dementia/therapy , Humans , Palliative Care , Qualitative Research
5.
J Nutr Health Aging ; 22(7): 766-773, 2018.
Article in English | MEDLINE | ID: mdl-30080217

ABSTRACT

OBJECTIVE: To assess the association between muscle parameters (mass, strength, physical performance) and activities of daily living (ADL), quality of life (QoL), and health care costs. DESIGN: Cross-sectional Maastricht Sarcopenia Study (MaSS). SETTING: Community-dwelling, assisted-living, residential living facility. PARTICIPANTS: 227 adults aged 65 and older. MEASUREMENTS: Muscle mass, hand grip strength and physical performance were assessed by bio-electrical impedance, JAMAR dynamometer and the Short Physical Performance Battery, respectively. Health outcomes were measured by the Groningen Activity Restriction Scale (disability in ADL) and the EQ-5D-5L (QoL). Health care costs were calculated based on health care use in the past three months. RESULTS: Muscle strength and physical performance showed a strong correlation with ADL, QoL, and health care costs (P<.01); for muscle mass no significant correlations were observed. Regression analyses showed that higher gait speed (OR 0.06, 95%CI 0.01-0.55) was associated with a lower probability of ADL disability. Furthermore, slower chair stand (OR 1.23, 95%CI 1.08-1.42), and more comorbidities (OR 1.58, 95%CI 1.23-2.02) were explanatory factors for higher ADL disability. Explanatory factors for QoL and costs were: more disability in ADL (OR 1.26, 95%CI 1.12-1.41 for QoL; B = 0.09, P<.01 for costs) and more comorbidities (OR 1.44, 95%CI 1.14-1.82 for QoL; B = 0.35, P<.01 for costs). CONCLUSION: Lower gait speed and chair stand were potential drivers of disability in ADL. Disability in ADL and comorbidities were associated with QoL and health care costs in community-dwelling older adults. Improving physical performance may be a valuable target for future intervention and research to impact health burden and costs.


Subject(s)
Activities of Daily Living/psychology , Gait/physiology , Hand Strength/physiology , Health Care Costs/statistics & numerical data , Muscle Strength/physiology , Quality of Life/psychology , Walking Speed/physiology , Aged , Aged, 80 and over , Comorbidity , Cross-Sectional Studies , Disabled Persons , Electric Impedance , Female , Humans , Independent Living , Male , Sarcopenia/epidemiology
6.
J Nutr Health Aging ; 18(6): 595-600, 2014.
Article in English | MEDLINE | ID: mdl-24950150

ABSTRACT

OBJECTIVES: To investigate the malnutrition prevalence in Dutch care home residents with dementia over the years. Secondly, to examine the relationship of malnutrition and dementia and the role of care dependency and co-morbidity within this relationship. DESIGN: This study is a secondary analysis of data of the annual independent Dutch National Prevalence Measurement of Care Problems of Maastricht University. The design involves a cross-sectional, multicenter point prevalence measurement. SETTING: Care homes. PARTICIPANTS: 75399 residents older than 65 years (4523 resident with dementia) participated over 5 years (2006-2010). Sixty organizations measured 4 times, 31 organizations 3 times, 68 organizations 2 times, 511 organizations 1 time. MEASUREMENTS: A standardized questionnaire was used to register amongst others data of weight, height, nutritional intake, undesired weight loss, comorbidity, dementia, and care dependency. RESULTS: The study was able to show that there is a significant decline in malnutrition prevalence in the group of non-demented residents over the years (Non-demented group p <0.001). The prevalence of malnutrition in the demented group showed no significant reduction over the years. GEE analysis showed that malnutrition and dementia are related and that care dependency and age are important influencing factors in this relation. CONCLUSION: The results show that compared to the non-demented residents, the prevalence of malnutrition does not decline in demented care home residents over the years. Moreover, the findings of this study stress that malnutrition and dementia are related, while care dependency and age are confounding factors in this relationship.


Subject(s)
Dementia/epidemiology , Homes for the Aged , Malnutrition/epidemiology , Nursing Homes , Aged , Aged, 80 and over , Body Height , Body Weight , Comorbidity , Confounding Factors, Epidemiologic , Cross-Sectional Studies , Eating , Female , Humans , Male , Netherlands/epidemiology , Nutritional Status , Prevalence , Surveys and Questionnaires , Universities , Weight Loss
7.
J Frailty Aging ; 3(4): 222-9, 2014.
Article in English | MEDLINE | ID: mdl-27048861

ABSTRACT

BACKGROUND: Sarcopenia is probably an important causal factor for functional decline in acutely ill hospitalized geriatric patients. Low skeletal muscle mass, low gait speed and low grip strength are hallmarks of diagnosing sarcopenia. However there are many different diagnostic criteria to assess sarcopenia. OBJECTIVES: In this study the influence of different criteria for sarcopenia was studied on sarcopenia prevalence in geriatric patients admitted to an acute care hospital. DESIGN: Cross sectional study design. SETTING: A geriatric ward of a large Dutch hospital. PARTICIPANTS: Geriatric patients. MEASUREMENTS: Skeletal muscle mass measured using bio impedance analysis (BIA), gait speed using the 4 meter walking test and grip strength. The sarcopenia prevalence was investigated according to criteria of: muscle mass, grip strength, the European Working Group on Sarcopenia in Elderly People, the International Working Group on Sarcopenia and the Special Interest Group of Society of Sarcopenia, Cachexia and Wasting Disorders. RESULTS: 85 geriatric patients were included (61 women). Applying the 17 different criteria, the sarcopenia prevalence varied from 26-75% for women and from 42-100% for men. Comparing the Janssen calculation with the Maltron calculation sarcopenia prevalence ranged from respectively 26-67% and 67-70% for women and from 42-71% and 75-100% for men. Almost all patients (96%) had a low gait speed. CONCLUSIONS: Sarcopenia is highly prevalent in an acute hospitalized geriatric population, although the prevalence varies widely depending on the diagnostic criteria applied. A prospective study is needed to discover which criteria of sarcopenia can predict best adverse outcomes.

8.
Tijdschr Gerontol Geriatr ; 44(6): 242-52, 2013 Dec.
Article in Dutch | MEDLINE | ID: mdl-24263698

ABSTRACT

Since 1998, the National Prevalence Measurement of Care Problems (LPZ) has annually measured the prevalence, prevention and treatment of a number of care problems in many health care organisations. These problems include pressure ulcers, incontinence, intertrigo, malnutrition, falls and the use of restraints. This article describes trends in the prevalence of these problems during the past few years and the preventive and treatment measures taken for clients residing in psychogeriatric and/or somatic wards of nursing homes. The results show that the prevalence of these care problems has declined in general. Nevertheless, the individual interventions (preventive measures and treatment) have not really changed in recent years. It is concluded that the extra attention paid to these care problems might already have had a positive effect on their prevalence. This must be further investigated. In any case, extra follow-up steps need to be taken to bring about a further decline. The article describes which steps the project group has already taken in this respect.


Subject(s)
Homes for the Aged/standards , Nursing Homes/standards , Patient Care/standards , Quality of Health Care , Accidental Falls/statistics & numerical data , Aged , Aged, 80 and over , Fecal Incontinence/epidemiology , Fecal Incontinence/prevention & control , Female , Health Care Surveys , Humans , Male , Malnutrition/epidemiology , Malnutrition/prevention & control , Netherlands/epidemiology , Pressure Ulcer/epidemiology , Pressure Ulcer/prevention & control , Prevalence , Urinary Incontinence/epidemiology , Urinary Incontinence/prevention & control
9.
J Wound Care ; 22(5): 248-51, 2013 May.
Article in English | MEDLINE | ID: mdl-23702722

ABSTRACT

In the second in the series, Professor Ruud Halfens and Dr Judith Meijers give an overview of statistics, both descriptive and inferential. They describe the first principles of statistics, including some relevant inferential tests.


Subject(s)
Statistics as Topic/methods , Confidence Intervals , Data Interpretation, Statistical , Humans , Sample Size , Statistical Distributions
10.
J Nutr Health Aging ; 16(7): 654-8, 2012 Jul.
Article in English | MEDLINE | ID: mdl-22836709

ABSTRACT

UNLABELLED: To investigate the role of malnutrition, impaired mobility and care dependency in predicting fallers in older Dutch home care clients. DESIGN: This study is a secondary analysis of data of the annual independent national prevalence measurement of care problems of Maastricht University. The design involves a cross-sectional, multicentre point prevalence measurement (malnutrition, mobility), and a 30 days incidence measurement (falls). SETTING: Dutch home care organisations. PARTICIPANTS: 2971 clients (older than 65 years) from 22 home care organizations participated. MEASUREMENTS: A standardized questionnaire was used to register amongst others data of weight, height, number and type of diseases (like for example neurologic diseases, dementia, CVA, COPD, eye/ear disorders, musculoskeletal disorders), nutritional intake, use of psychopharmaca, undesired weight loss, fall history, mobility, and care dependency. RESULTS: The study was able to show that fallers are more often malnourished than non-fallers in the univariate analysis. Most importantly the study indicated by multivariate analysis that fallers could be predicted by the risk factors immobility ((OR 2.516 95% CI 1.144-5.532), high care dependency (OR 1.684 95% CI 1.121-2.532) and malnutrition (OR 1.978 95% CI 1.340-2.920). CONCLUSION: The findings of this study stress that malnutrition, impaired mobility and care dependency are potential reversible factors related to falls. Therefore early identification and management of nutritional status, impaired mobility and care dependency are important aspects for a possible fall prevention strategy.


Subject(s)
Accidental Falls/statistics & numerical data , Home Care Services , Malnutrition/epidemiology , Mobility Limitation , Accidental Falls/prevention & control , Aged , Aged, 80 and over , Cross-Sectional Studies , Dementia/complications , Dementia/physiopathology , Female , Geriatric Assessment/methods , Humans , Logistic Models , Male , Malnutrition/complications , Malnutrition/physiopathology , Multivariate Analysis , Netherlands/epidemiology , Nutrition Assessment , Nutritional Status , Prevalence , Pulmonary Disease, Chronic Obstructive/complications , Pulmonary Disease, Chronic Obstructive/physiopathology , Risk Assessment , Risk Factors , Surveys and Questionnaires , Weight Loss
11.
Nutrition ; 26(9): 886-9, 2010 Sep.
Article in English | MEDLINE | ID: mdl-20444575

ABSTRACT

OBJECTIVES: Pressure ulcers (PU) remain a major health care problem throughout the world. Although malnutrition is considered to be one of the intrinsic risk factors for PU, more evidence is needed to identify the exact relation between PU and malnutrition. This study aims to identify whether there exists a relationship between PU and malnutrition in hospitals and nursing homes. METHODS: A cross-sectional study was performed in April 2007 in hospitals and nursing homes in Germany. PU were assessed using the Braden scale. Malnutrition was assessed by low body mass index (BMI), undesired weight loss, and insufficient nutritional intake. RESULTS: Two thousand three hundred ninety-three patients from 29 nursing homes and 4067 patients from 22 hospitals participated in the study. PU in both hospital and nursing home patients were significantly (P < 0.01) related to undesired weight loss (5%-10%). Moreover low nutritional intake and low BMI (<18.5) were also significantly related to PU in hospitals and nursing homes. CONCLUSION: There is a significant relationship between malnutrition parameters like undesired weight loss, BMI < 18.5, and low nutritional intake and PU.


Subject(s)
Body Mass Index , Energy Intake , Hospitalization , Malnutrition/complications , Pressure Ulcer/etiology , Weight Loss , Aged , Aged, 80 and over , Cross-Sectional Studies , Hospitals , Humans , Male , Middle Aged , Nursing Homes , Nutritional Status , Risk Factors
12.
J Wound Care ; 16(5): 201-5, 2007 May.
Article in English | MEDLINE | ID: mdl-17552402

ABSTRACT

OBJECTIVE: In 2004 the European Pressure Ulcer Advisory Panel nutritional working group developed a nutritional guideline for pressure ulcer prevention and treatment. This study investigated the degree to which the guideline was disseminated and implemented in clinical practice. METHOD: A cross-sectional study was undertaken in health-care organisations in The Netherlands, Germany and the UK. A printed, standardised questionnaire which followed Rogers' model of the innovation-decision process was developed, translated and distributed to 1087 health-care organisations. RESULTS: The response rate was 33% (n = 363). Sixty-one per cent of respondents knew of the guideline. Twenty-five per cent had applied it to their clinical practice and used it for nutritional screening. The main barrier to the provision of nutritional support appeared to be lack of knowledge and skills. CONCLUSION: One year after its dissemination, more than half of respondents knew of the guideline, with one in four applying it to their practice. The guideline was better disseminated and implemented in The Netherlands and UK than in Germany, where only 4% of participants had used it.


Subject(s)
Guideline Adherence , Information Dissemination , Malnutrition/prevention & control , Pressure Ulcer/therapy , Cross-Sectional Studies , Dietary Supplements , Enteral Nutrition , Germany , Health Care Surveys , Humans , Netherlands , Nutrition Assessment , United Kingdom
13.
Occup Environ Med ; 54(10): 708-13, 1997 Oct.
Article in English | MEDLINE | ID: mdl-9404317

ABSTRACT

OBJECTIVES: To analyse the mortality patterns of former Dutch coal miners, focusing on coal workers' pneumoconiosis (CWP) and chronic obstructive pulmonary diseases (COPD) in relation to pre-existing impairment of lung function. METHODS: 3790 selected miners, medically examined between 1952 and 1963, were followed up to the end of 1991 with the municipal population registries and the causes of death from the death certificates were ascertained and converted to the codes from the ninth revision of the international classification of diseases (ICD-9). Mortality comparisons were made with the male population in The Netherlands, resulting in standardised mortality ratios (SMRs). 3367 miners had radiological manifestation of CWP at medical examinations. RESULTS: 80% of the miners died during the follow up period. Excess mortalities from CWP (SMR 4523) and COPD (SMR 179) were found. Coal miners without CWP also showed an increased mortality from COPD (SMR 2913). A diminished lung function (forced expiratory volume in one second (FEV1), or FEV1/FVC (forced vital capacity) ratio) at medical examination resulted in a significantly increased SMR for COPD (322 and 212 respectively) whereas normal lung function yielded expected mortalities from COPD. A positive correlation also emerged between diminished lung function and the SMR due to CWP. The body mass index (BMI) at the moment of medical examination was correlated with the risk of dying of COPD and CWP: a decreasing BMI resulting in an increased SMR. CONCLUSIONS: Not only infectious diseases and CWP but also COPD is an important cause of occupational mortality in miners with extensive exposure to coal mine dust. No obvious connection between pre-existing CWP and the COPD mortality exists. Impaired FEV1 and FEV1/FVC ratios are predictors of an increased risk of COPD death. The BMI seems to indicate the severity of the COPD, resulting in premature death.


Subject(s)
Coal Mining , Lung Diseases/mortality , Lung/physiopathology , Occupational Diseases/mortality , Adult , Aged , Aged, 80 and over , Body Mass Index , Follow-Up Studies , Forced Expiratory Volume , Humans , Lung Diseases/etiology , Lung Diseases, Obstructive/etiology , Lung Diseases, Obstructive/mortality , Male , Middle Aged , Netherlands/epidemiology , Occupational Diseases/etiology , Pneumoconiosis/etiology , Pneumoconiosis/mortality , Retrospective Studies , Risk Factors , Vital Capacity
14.
Regul Toxicol Pharmacol ; 25(2): 94-102, 1997 Apr.
Article in English | MEDLINE | ID: mdl-9185886

ABSTRACT

Carcinogenic effects of chemicals can be investigated in animal experiments and epidemiological studies of exposed humans, mostly in the workplace. In this article epidemiologic evidence is compared with the animal data for 35 chemicals. Risk calculations are compared for 22 chemicals. The chemicals showing no or unclear carcinogenic effects in humans were more likely to show toxic side effects in the animal studies, indicating that the test concentrations were above the maximum tolerated dose. In addition, the animal experiments with these chemicals more often showed neoplastic effects on multiple sites than chemicals for which clear positive epidemiological studies are available. These findings may explain the existence of discrepancies between the outcomes of animal testing and human studies. They suggest that carcinogenic effects in multiple organs in animals could be seen as ultimate manifestations of the side effects of the testing method and that they have limited predictive value for the human situation.


Subject(s)
Carcinogens/toxicity , Neoplasms, Experimental , Neurotoxins/adverse effects , Risk Assessment , Animals , Humans , Statistics as Topic
15.
Am J Ind Med ; 30(1): 26-30, 1996 Jul.
Article in English | MEDLINE | ID: mdl-8837678

ABSTRACT

A retrospective cohort study in 1794 male ceramic workers in the Netherlands was carried out to analyze the lung cancer risk in relation to crystalline silica exposure and silicosis. They had all been employed for two years or longer in ceramic industries between 1972 and 1982. During a health survey, 124 cases of simple pneumoconiosis were diagnosed; after 14 years of follow-up, 161 deaths had occurred. No increased overall and cause-specific mortality was found in the total group of ceramic workers, and a statistically significant cumulative dose-response relation for silica exposure and lung cancer did not emerge. An excess lung cancer mortality appeared among workers with simple pneumoconiosis. The authors conclude that the disease process resulting in silicosis in the ceramic industry carries an increased risk of lung cancer, which is supportive of a nongenotoxic pathway.


Subject(s)
Ceramics , Lung Neoplasms/mortality , Occupational Diseases/mortality , Adult , Cause of Death , Ceramics/adverse effects , Cohort Studies , Cross-Sectional Studies , Follow-Up Studies , Humans , Lung Neoplasms/epidemiology , Male , Netherlands/epidemiology , Occupational Diseases/epidemiology , Occupational Exposure , Pneumoconiosis/epidemiology , Pneumoconiosis/mortality , Retrospective Studies , Risk Factors , Silicon Dioxide/adverse effects , Silicosis/epidemiology , Silicosis/mortality , Smoking/epidemiology
16.
Occup Environ Med ; 52(9): 606-10, 1995 Sep.
Article in English | MEDLINE | ID: mdl-7550801

ABSTRACT

OBJECTIVES: This study was carried out to investigate the mortality patterns in a group of 3790 coal miners. The study population had abnormal chest x ray films at a routine medical examination that was performed in the 1950s. METHODS: The total group of 3790 coal miners were followed up for mortality up to 1 January 1992. Causes of death, determined and coded at time of death, were traced with help from the Central Bureau of Statistics. RESULTS: Total mortality in this group of coal miners with abnormal chest x ray films was significantly higher than expected (SMR 127.1, 95% CI 122.5-131.6), mainly a reflection of the increase in mortality from non-malignant respiratory disease (SMR 411.0, 95% CI 382.3-441.3). Mortality from gastric cancer was also significantly increased (SMR 147.5, 95% CI 122.3-176.3). This risk of mortality from gastric cancer was confined to workers with no pneumoconiosis or only a mild form. Despite the strong relation to duration of employment and pneumoconiosis the group of workers with more severe manifestations of pneumoconiosis did not experience an excess in mortality from gastric cancer. CONCLUSION: This study confirms the earlier reported risk of gastric cancer in coal miners. Also it confirms the hypothesis that this risk of gastric cancer is limited to workers with a mild degree of pneumoconiosis or none. In workers with severe forms of pneumoconiosis the pulmonary clearance system is impaired in such a way that the inhaled coal dust does not reach the digestive tract.


Subject(s)
Coal Mining , Occupational Diseases/etiology , Pneumoconiosis/complications , Stomach Neoplasms/etiology , Adult , Cause of Death , Coal/adverse effects , Dust/adverse effects , Follow-Up Studies , Forced Expiratory Volume , Humans , Male , Middle Aged , Netherlands/epidemiology , Occupational Diseases/mortality , Stomach Neoplasms/complications , Stomach Neoplasms/mortality , Vital Capacity
17.
Int J Epidemiol ; 22(1): 9-15, 1993 Feb.
Article in English | MEDLINE | ID: mdl-8449653

ABSTRACT

Several studies in recent years have raised the possibility that exposure to extreme low frequency (ELF) electromagnetic fields may be hazardous to human health, in particular by the promotion or initiation of leukaemia and other cancers. To determine if this exposure creates a long-term hazard to the public, the mortality of a group of people identified as having lived in an urban quarter of Maastricht in which two 150 kiloVolt (kV) powerlines and one transformer substation are located was investigated. Using the Dutch population registry it was possible to identify retrospectively 3549 inhabitants of the quarter who lived there for at least 5 years between 1956 and 1981. Of these 1552 study subjects lived within 100 m of the electricity transmission equipment and were exposed to magnetic field intensity of 1.0-11.0 milliGauss. The overall standardized mortality ratio and cancer mortality ratios were either not or only slightly elevated. The study does not support previously reported associations of exposure to ELF electromagnetic fields with leukaemia, brain cancer and breast cancer.


Subject(s)
Electromagnetic Fields/adverse effects , Environmental Exposure/adverse effects , Neoplasms/mortality , Power Plants , Cause of Death , Cohort Studies , Electricity/adverse effects , Female , Humans , Male , Netherlands/epidemiology , Residence Characteristics , Retrospective Studies
18.
Regul Toxicol Pharmacol ; 16(3): 215-22, 1992 Dec.
Article in English | MEDLINE | ID: mdl-1293639

ABSTRACT

The role of epidemiological and animal experimental studies in the process of qualitative and quantitative risk assessment is discussed. So far little agreement exists between animal experimental data and epidemiological outcomes in the procedure of qualitative risk assessment. Several reasons for these discrepancies are mentioned. The application of existing epidemiological study results in quantitative risk assessment is hampered by factors, such as the lack of exact exposure information (compound, level, duration), undefined other exposures in and outside the working environment, small sample sizes, the comparatively short duration of epidemiological studies and the absence of detailed information about the specific effects. All this resulted in a relatively small impact of epidemiological studies in risk assessment. Recommendations are made in order to improve the impact of epidemiology in risk assessment.


Subject(s)
Hazardous Substances/toxicity , Models, Biological , Occupational Diseases/epidemiology , Animals , Disease Models, Animal , Humans , Risk Factors
20.
Ned Tijdschr Geneeskd ; 135(3): 93-8, 1991 Jan 19.
Article in Dutch | MEDLINE | ID: mdl-1996167

ABSTRACT

In this article the sex- and age-specific trends and geographical distribution of asbestos related pleural mesothelioma mortality in the Netherlands between 1970 and 1987 are investigated. For men total mortality increased from 10.8 per million during 1970-1978 to 20.9 per million during 1979-1987. The highest mortality occurred with 147.7 per million in 1987 in the age group between 65 and 74 years. Mortality rates for the age group between 55 and 64 years amounted to 96.5 per million in 1987. The geographical distribution over the country showed a strong concentration of male mesothelioma cases in the regions with many harbours, shipyards and heavy industries round Amsterdam, IJmuiden, Rotterdam, Dordrecht and Walcheren. Using linear regression techniques, it was calculated that several thousands new mesothelioma cases will occur in the Netherlands during the next two decades. A significant decrease in mesothelioma mortality can not be expected before 2010.


Subject(s)
Mesothelioma/epidemiology , Pleural Neoplasms/epidemiology , Adult , Aged , Demography , Female , Humans , Male , Mesothelioma/mortality , Middle Aged , Netherlands/epidemiology , Occupations , Pleural Neoplasms/mortality , Prognosis , Regression Analysis
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