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Biomedical subjects

B Netterstrøm

Publications and source records attributed to B Netterstrøm.

35 records · Page 2Linked to original sources
PubMed1991

Job strain and cardiovascular risk factors: a cross sectional study of employed Danish men and women.

As part of the World Health Organisation initiated MONICA project, 2000 men and women aged 30, 40, 50, and 60 from the general population were invited to undergo a medical examination with special emphasis on cardiovascular disease. A total of 1504 (75%) participated, 1209 of whom were employed. The participants answered a questionnaire on working, social, and health conditions and underwent clinical examinations that included the measurement of blood pressure and serum cholesterol, triglyceride, high density lipoprotein, fibrinogen, and glycated haemoglobin (HbA1C) concentrations. Using the demand-control model for measuring job strain suggested by Karasek, the employed people were classified according to those who had suffered job strain and those who had not in two different ways. The subjective classification was based on the participants' statements regarding demand and control in their jobs whereas the objective classification was based on job title and mode of payment. More women than men were classified as having high strain jobs. After adjusting for age and sex no significant association was found between coronary risk factors and subjective job strain. A tendency for an association between fibrinogen and job strain was found. Body mass index and HbA1C concentration were significantly associated with objective job strain independent of confounders.

Adult↗
PubMed1990

Peptic ulcer among urban bus drivers in Denmark.

As part of a survey on the work environment of bus drivers, 2045 (83%) of 2465 male bus drivers in the three major cities in Denmark in 1978 answered a postal questionnaire on health and working conditions. In order to evaluate the relative occurrence of peptic ulcer among the bus drivers, a follow-up study was also conducted. All hospital discharges with a peptic ulcer diagnosis among the bus drivers were registered from the Danish National Patient Register. All Danish men were used as reference group. On the basis of the 1978-questionnaire association between occupational and psychosocial factors and subsequent hospital discharge with a peptic ulcer diagnosis was studied. The prevalence of abdominal pain alleviated by food intake was 12% among bus drivers and 6% in the reference group. The incidence of hospital discharge with duodenal ulcer among younger bus drivers was twice the incidence among Danish men in the same age group. The incidence of all manifestations of peptic ulcer disease among bus drivers did not differ from the incidence among Danish men. Of occupational and psycho-social factors, wage dissatisfaction and smoking showed statistically significant association with hospital discharge with PU in a 6 3/4-year period. Job dissatisfaction, stress symptoms and lack of some social network factors tended to increase the risk of hospital discharge with PU.

Adult↗
PubMed1989

[Psychiatric admissions among city bus drivers. A prospective study].

During the period from 1978 until and including 1984, 2,645 male bus drivers were followed as regards psychiatric admissions. In 1978, 83% of these had replied to a questionnaire about job-satisfaction and working conditions. Fifty-eight out of these 2,465 had been admitted to psychiatric departments during the follow-up period, corresponding to 117 admissions. The commonest diagnoses on discharge were affect reactions with a total of 35 discharges. The number of admissions to psychiatric hospitals among bus drivers was compared with the number of admissions among Danish men in 1981. Significantly fewer admissions among bus drivers were found in the diagnostic group manic depressive psychoses, reactive conditions and for all psychiatric admissions. On the other hand, the number of admissions among bus drivers where the diagnoses of affect reactions, paranoid conditions and non-specific psychoses were found to be significantly higher (standard morbidity ratio statistic = 217) than for Danish men. Odds-ratio for psychiatric admissions among the 2,045 bus drivers who had replied to the questionnaire in 1978 were significantly raised for the bus drivers who did not feel their work monotonous, were divorced, felt unbalanced and frequently stressed. Previous smokers had significantly lower odds ratio as compared with others.

Adult↗
PubMed1989

Low back trouble among urban bus drivers in Denmark.

The occurrence of low back trouble and possible connection with psychosocial conditions among urban bus drivers were studied using a questionnaire and subsequent registration of hospital discharges. 2,045 (83%) full-time male bus drivers in the three largest cities in Denmark answered a questionnaire in 1978 regarding psychosocial factors and health. The prevalence of frequent low back pain was 57%. In a control group of 195 motormen the prevalence was 40%. Standardized Morbidity Ratio for bus drivers discharged from hospital during the period 1978-1984 with the diagnosis lumbar disc herniation was 137 compared to all Danish men. These differences were statistically significant. Of psychosocial factors only "the feeling of being mentally unbalanced" was found to be statistically significantly related to subsequent hospital discharge with a LBT-diagnosis. Long seniority as bus driver of those discharged from hospital with LBT makes it probable that LBT has etiologic factors in the work environment. The sedentary position and whole-body vibrations may be contributory causes.

Adult↗
PubMed1988

Cancer incidence among urban bus drivers in Denmark.

During the period from 1978-1984 the incidence of cancer among 2,465 male urban bus drivers in three major cities in Denmark was studied. The information with regard to cancer diagnosis was obtained from the Danish Cancer Registry. Danish men in 1981 were used as reference. Standardized Morbidity Ratio (SMR) for bladder- and skin cancer was significantly elevated among the bus drivers with values of 206 and 202, respectively. As to other cancers, no significant deviations from the expected were found. The same result was found when only drivers with more than ten years' seniority were included in the calculations. The incidence of skin cancer remained significantly elevated when corrected for degree of urbanization. Traffic density and whether the drivers worked in Copenhagen or in the province were not related to cancer incidence.

Adult↗
PubMed1988

Glycated hemoglobin as a measure of physiological stress.

The concentration of glycated hemoglobin (HbA1c) is an integrated expression of the blood glucose concentration level in the previous weeks. The levels of HbA1c were measured in 23 medical students who had to pass an examination within a few weeks. Twelve other students served as a control group. Four months later, the blood tests were repeated. In addition, serum cholesterol was measured. HbA1c levels were significantly higher in the exam group compared with the control group. The second test revealed a significant decrease in HbA1c in the exam group, while the values in the control group were stable. No differences in serum cholesterol were detected. It is concluded that HbA1c might be of value as a measure of physiological stress.

Adult↗
PubMed1988

Impact of work-related and psychosocial factors on the development of ischemic heart disease among urban bus drivers in Denmark.

From 1978 to 1985, 2,465 male bus drivers in the three major cities in Denmark were followed with regard to hospital admission due to myocardial infarction (MI) and death due to ischemic heart disease (IHD). In all 2,045 (83%) of these men responded in 1978 to a questionnaire on psychosocial well-being and work conditions. The respondents did not differ from the nonrespondents regarding hospital admissions and death in the follow-up period (1978-1984). Sixty-two cases of MI were registered among the 2,045 bus drivers in 1978-1984. On this basis relative risk for MI was calculated with a multiple regression model for independent variables regarding psychosocial well-being and work conditions. High work load (driving in heavy traffic) was significantly associated with the occurrence of MI. Of the psychosocial factors "no social contact with colleagues" and "increased work pace" were also significantly associated with the occurrence of MI. Smoking habits tended to be associated with the occurrence of MI, while stress symptoms and job dissatisfaction did not. The mental burden on bus drivers working in heavy traffic seems a possible explanation for the findings.

Adult↗
PubMed1981

Incidence and prevalence of ischaemic heart disease among urban busdrivers in Copenhagen.

A 5-year follow-up study was conducted among all male busdrivers in Copenhagen, Denmark, in addition to the cross-sectional study. In the follow-up study, the SMR for death due to ischaemic heart disease (ICD 410-414) was 144 and SMR for first clinical episode of acute myocardial infarction (ICD 410) was 139, with men in Copenhagen as controls. 80% of the busdrivers (1396 men) participated in the cross-sectional study. The prevalence of questionnaire-positive angina pectoris was 4.9%; in all age groups this was higher than among the controls, locomotive drivers in Denmark. The high health-related selection of busdrivers is assumed to cause an underestimation of the relative occurrence of ischaemic heart disease. Possible explanations for the findings in this study are discussed.

Adult↗
PubMedDate not supplied

Acute mercury intoxication examined with coordination ability and tremor.

At a mercury spill, several workers were exposed to mercury vapour concentrations up to 0.15 mg/m3. Two weeks after, 38 exposed workers were examined. Fourteen had a Hg in urine concentration above 25 nmol/l. Two exposed groups (n = 7) and an unexposed control group (n = 15) were formed, based on Hg in urine: a HI group with mean = 106.5 nmol/l (range: 49.5-249); a LO group with mean = 35.2 nmol/l (range: 28.8-48.0), and control group with mean = 10.5 nmol/l (range: 4.5-14.1). The groups were reexamined 3 and 16 months later. The groups were examined with two computer-based portable test systems. CATSYS quantifies hand pronation/supination, finger tapping, and reaction time. TREMOR records and analyses tremor at the finger tips. The results showed reduced coordination ability in the HI group at the first examination compared to the control group. Tremor intensity was very high in the HI group and decreased only slightly during the follow-up period. The study indicates that quantification of coordination ability and tremor intensity can be used within occupational medicine for the assessment of the impact of acute mercury intoxication.

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