| 1. |
- Ahlström, Gerd, et al.
(författare)
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Epidemiology of neuromuscular diseases, including the postpolio sequelae, in a Swedish county.
- 1993
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Ingår i: Neuroepidemiology. - 0251-5350 .- 1423-0208. ; 12:5, s. 262-269
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Tidskriftsartikel (refereegranskat)abstract
- The epidemiology of neuromuscular diseases was studied in the county of Orebro, Sweden (study population 270,000). Several different sources of data were utilized, compared and validated. On the prevalence of day (January 1, 1988) 474 patients were identified. The rate per 100,000 population was 92 for the postpolio sequelae (PPS) and 84 for the other neuromuscular diseases (motor neuron disease 9, hereditary neuropathies 9, myoneural disorders 16, myotonic disorders 19, muscular dystrophies 20 and myositis 11). Of the patients with the PPS, 80% reported late-onset symptoms. On the basis of an expanded survey including all medical records in one health care district, the prevalence of the PPS was estimated to be 186/100,000 population.
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| 2. |
- Aked, Joseph, et al.
(författare)
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Temporal Trends of Stroke Epidemiology in Southern Sweden : A Population-Based Study on Stroke Incidence and Early Case-Fatality
- 2018
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 50:3-4, s. 174-182
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Tidskriftsartikel (refereegranskat)abstract
- Background: Up-to-date epidemiological stroke studies are important for healthcare planning and evaluating prevention strategies. This population-based study investigates temporal trends in stroke incidence and case-fatality in southern Sweden. Methods: First-ever stroke cases in the local catchment area of Skåne University Hospital in Lund, Sweden, between March, 2015 and February, 2016, were included from several sources, including 2 prospective hospital-based registers, retrospective screening of primary care visits, and autopsy registers. Stroke incidence and 28-day case-fatality rates were compared with data from this area obtained through similar methodology between March, 2001 and February, 2002. Results: Altogether, 456 and 413 first-ever stroke patients were identified during the earlier and later time periods respectively. The age- and sex-standardized stroke incidence rates decreased from 246 (95% CI 224–270) to 165 (95% CI 149–182) per 100,000 people. However, incidence remained unaltered among those <65 years. Early case-fatality decreased from 14 to 11% (p = 0.165). Conclusion: First-ever stroke incidence in southern Sweden has decreased to 33% since the beginning of this millennium. Incidence rates have decreased among the elderly but remain unchanged among younger age groups. Our findings warrant further studies on trends in risk factor profiles and effects of prevention strategies, and heightened focus on stroke in the young.
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| 3. |
- Alkhawajah, N. M., et al.
(författare)
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Waterpipe Tobacco Smoking and Other Multiple Sclerosis Environmental Risk Factors
- 2022
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 56:2, s. 97-103
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Tidskriftsartikel (refereegranskat)abstract
- Introduction: There are a number of well-established risk factors for multiple sclerosis (MS). Other factors, however, showed conflicting or inconsistent results. Here, we examine some factors that are unique to or more practiced in Saudi Arabia (SA) and the Arab region such as waterpipe tobacco smoking (WTS), face veiling, raw milk (RM) and camel milk (CM) consumption, and tuberculosis (TB) infection in addition to other traditional factors. Methods: This is a sex- and age-matched case-control study in which we used a structured questionnaire to examine the relation between a number of factors and exposures and the risk of MS. Three hundred MS patients and 601 controls were included. Data were analyzed across different statistical models using logistic regression adjusting for age, sex, marital status, duration of breastfeeding, age first joining school, coffee consumption, and face exposure. Results: Cigarette smoking (OR = 1.79, [95% CI: 1.01-3.17], p = 0.047), WTS (OR = 2.25, [95% CI: 1.21-4.15], p = 0.010), and CM consumption (OR = 2.50, [95% CI: 1.20-5.21], p = 0.014) increased the risk of MS, while performing hajj (OR = 0.47, [95% CI: 0.34-0.67], p = 0.001), TB infection (OR = 0.29, [95% CI: 0.11-0.78], p = 0.015), face veiling (OR = 0.32, [95% CI: 0.23-0.47], p = 0.001), and coffee consumption (OR = 0.67, [95% CI: 0.49-0.89], p = 0.008) appeared to be associated with decreased risk. No association was found between fast food, processed meat, soft drinks, animal milk (other than camel), or RM consumption and the risk of MS. Conclusion: The results of this case-control study confirm that different means of tobacco smoking are associated with increased risk of MS. It also sheds more light on the complex association between infections and MS.
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| 4. |
- Andreasen, N, et al.
(författare)
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Prevalence and incidence of clinically diagnosed memory impairments in a geographically defined general population in Sweden. The Piteå Dementia Project
- 1999
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 18:3, s. 144-155
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Tidskriftsartikel (refereegranskat)abstract
- In the Piteå River Valley all persons with memory impairment that interferes with normal life are referred to one hospital department for clinical workup and diagnosis. 619 patients were assessed in the department during the years 1990–1995. Of these, 36.9% had Alzheimer’s disease (AD), 30.4% had vascular dementia (VaD), 3.0% had a mixed AD/VaD, 3.2% had frontotemporal dementia and 5.3% had other forms of dementia. Another 7% had memory impairment but no dementia. The overall mean annual incidence rate of clinically relevant dementia was 295/100,000 persons at risk and the mean prevalence rate was 755/100,000 persons. For persons 65 years and older the incidence and prevalence rates were 840 and 2,150/100,000 persons, respectively. This means that annually, approximately 300 persons/100,000 population over the age of 40 need medical attention or social services.
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| 5. |
- Asplund, Maria, 1978-, et al.
(författare)
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Incidence of traumatic peripheral nerve injuries and amputations in Sweden between 1998 and 2006
- 2008
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Ingår i: Neuroepidemiology. - Basel : Kargel, AG. - 0251-5350 .- 1423-0208.
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Tidskriftsartikel (refereegranskat)abstract
- Background: To define the epidemiological pattern of nerve injuries and traumatic amputations in Sweden, 1998-2006, and investigate possible targets for emerging neural engineering and neuroprosthetic technologies. Methods: The Swedish Hospital Discharge Register was used as basis of information, including data from all public in-patient care, excluding out-patient data. ICD-10 codes were screened for nerve injuries and traumatic amputations of high incidence or in-patient care time. Selected codes, causing factors, age and gender distribution were discussed in detail, and potential targets for tailored solutions were identified. Results: Incidence rate was determined to 13.9 for nerve injuries and 5.21 for amputations per 100 000 person-yrs. The majority of injuries occurred at wrist and hand level although it could be concluded that these are often minor injuries requiring less than a week of hospitalization. The single most care consuming nerve injury was brachial plexus injury constituting, in average, 68 injuries and 960 hospital days annually. When minor amputations of fingers and toes were disregarded, most frequent site of amputation was between knee and ankle (24 patients / year). Conclusions: Based on analysis of incidence and care time, we find that brachial plexus injuries and lower leg amputations should be primary targets of these new technologies.
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| 6. |
- Axelson, Olav, 1937-, et al.
(författare)
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Multiple sclerosis and ionizing radiation.
- 2001
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 120, s. 175-178
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Tidskriftsartikel (refereegranskat)abstract
- The etiology of multiple sclerosis (MS) may involve exposure to infectious, chemical or physical agents damaging the blood-brain barrier and an autoimmune reaction against myelin breakdown products. Here we report a pooled analysis of 174 MS cases and 815 population controls from two case-control studies with regard to such a potentially damaging exposure, namely X-ray examinations, radiological work and treatment with ionizing radiation. Exposure was assessed by questionnaires to the subjects. We obtained odds ratios of 4.4 (95% confidence interval, CI, 1.6-11.6) and 1.8 (95% CI 1.2-2.6) for radiological work and X-ray examinations, respectively, 5 cases, but no controls, in one of the studies had been treated with ionizing radiation. Our data and some other observations reported in the literature suggest a contributory role for ionizing radiation to the development of MS in some cases.
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| 7. |
- Boström, Inger, et al.
(författare)
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Mortality Statistics Studies of Multiple Sclerosis and Amyotrophic Lateral Sclerosis in Sweden
- 2012
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Ingår i: Neuroepidemiology. - : S. Karger. - 0251-5350 .- 1423-0208. ; 38:4, s. 245-249
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Tidskriftsartikel (refereegranskat)abstract
- Background: Multiple sclerosis (MS) and amyotrophic lateral sclerosis (ALS) are chronic neurologic diseases where distinct explanations of the pathogenesis are lacking. Two large Swedish register studies have rather unexpectedly detected a correlation between MS and ALS.The aim of this study was to investigate if an association between ALS and MS could be demonstrated as has been shown earlier.Material and methods: Data on mortality from ALS and MS, 1990-2010 were collected from the Swedish national statistics office. In all there were 5,696 deaths due to ALS and 3,941 deaths due to MS. Age- and sex-adjusted mortality rates were calculated.Results: There was no correlation between the mortality rates of ALS and MS in the 21 counties of Sweden for the period 1990 to 2010 (Spearman’s rho = - 0.052; p = 0.822; n = 21).The national mean mortality rate for ALS throughout the period of 1990 to 2010 was 2.98 per 100 000 person-years (95% CI 2.87 – 3.08). For MS the national mean mortality rate was 2.04 per 100 000 person-years (95% CI 1.95 – 2.12). Both ALS and MS mortality showed significant variation between the counties. Conclusion: This study did not confirm the previously shown association between MS and ALS in Sweden.
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| 8. |
- Brayne, C. E., et al.
(författare)
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Dementia Research Fit for the Planet: Reflections on Population Studies of Dementia for Researchers and Policy Makers Alike
- 2020
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 54:2, s. 157-170
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Tidskriftsartikel (refereegranskat)abstract
- In recent years, a rapidly increasing collection of investigative methods in addition to changes in diagnostic criteria for dementia have followed "high-tech" trends in medicine, with the aim to better define the dementia syndrome and its biological substrates, mainly in order to predict risk prior to clinical expression. These approaches are not without challenge. A set of guidelines have been developed by a group of European experts in population-based cohort research through a series of workshops, funded by the Joint Program for Neurodegenerative Disorders (JPND). The aims of the guidelines are to assist policy makers and researchers to understand (1) What population studies for ageing populations should encompass and (2) How to interpret the findings from population studies. Such studies are essential to provide evidence relevant to the understanding of healthy and frail brain ageing, including the dementia syndrome for contemporary and future societies by drawing on the past.
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| 9. |
- Buchwald, Fredrik, et al.
(författare)
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Validation of Diagnoses of Transient Ischemic Attack in the Swedish Stroke Register (Riksstroke) TIA-Module
- 2015
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Ingår i: Neuroepidemiology. - : S. Karger. - 0251-5350 .- 1423-0208. ; 45:1, s. 40-43
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Tidskriftsartikel (refereegranskat)abstract
- Background: In 2010, the Swedish Stroke Register (Riksstroke; RS) established a module for transient ischemic attacks (RS-TIA). We report a diagnostic validation study of patients included in RS-TIA.Methods: During the first year, 7,825 patients were registered at 59 out of 74 Swedish hospitals. A time-based TIA definition was applied. A sample of 180 patients (30 patients each from 6 hospitals), with a similar distribution of age and sex as in RS-TIA, was prepared. Two independent observers assessed medical records for quality of documentation and assigned a diagnosis of likely, possible, unlikely TIA or ischennic stroke, according to pre-specified criteria.Results:The 2 observers agreed in 77% of cases that the event was a likely or possible TIA, in 3% that the event was an ischemic stroke, and in 2% that the event was an unlikely TIA. The observers disagreed in 8% of patients on TIA vs. ischennic stroke, and in 11% on a vascular vs. non-vascular cause. Quality of documentation was fair.Conclusions: There was interobserver agreement on diagnosis of TIA in the majority of patients included in RS-TIA. Diagnostic accuracy may be further improved by more systematic documentation of symptoms and signs.
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| 10. |
- Cea-Soriano, Lucia, et al.
(författare)
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Epidemiology of Meningioma in the United Kingdom
- 2012
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Ingår i: Neuroepidemiology. - : S. Karger AG. - 0251-5350 .- 1423-0208. ; 39:1, s. 27-34
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Tidskriftsartikel (refereegranskat)abstract
- Background: Data on the epidemiology and aetiology of meningioma are limited.Methods:The Health Improvement Network UK primary care database was used to ascertain incident cases of meningioma between January 1996 and June 2008. Ten thousand controls analysis were frequency-matched by age, sex and year. A nested case control analysis was performed to determine risk factors for meningioma.Results:The incidence of meningioma was 5.30 per 100,000 person-years over the study period. The incidence was higher in women than in men (7.19 vs. 3.05 per 100,000 person-years). Cerebrovascular disease (OR 1.86; 95% CI 1.46-2.36) and a history of cancer, thyroid disease, epilepsy, migraine and headache and exposure to antiepileptics were significantly associated with an increased risk of meningionna. Ischemic heart disease and exposure to antiepileptics were associated with a decreased risk of meningionna.Conclusions: The incidence of meningioma in the UK remained stable over the 12-year study period and was twofold higher in women than men. Although the prevalence and incidence of meningioma remained stable during the study, further research into risk factors and predisposing conditions for the onset of meningioma and early symptoms of tumor development is warranted to improve prevention and early diagnosis of this disease.
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