21 results
Search Results
2. Lung cancer registries in Denmark, Finland, Norway and Sweden: a comparison and proposal for harmonization.
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Gouliaev, A., Rasmussen, T. R., Malila, N., Fjellbirkeland, L., Löfling, L., Jakobsen, E., Dalton, S. O., and Christensen, N. L.
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REPORTING of diseases , *LUNG tumors , *RESEARCH funding , *OVERALL survival - Abstract
Lung cancer is the leading cause of cancer-related death in all Nordic countries which, though similar in demographics and healthcare systems, have noticeable differences in lung cancer survival. Historically, Denmark and Finland have had higher lung cancer incidences and lower survival than Norway and Sweden. All four countries have national cancer registries. Data in these registries are often compared, but their full potential as a source of learning across the Nordic countries is impeded by differences between the registries. In this paper, we describe and compare the Nordic registries on lung cancer–specific data and discuss how a more harmonized registration practice could increase their usefulness as a source for mutual learning and quality improvements. We describe and compare the characteristics of data on lung cancer cases from registries in Denmark, Finland, Norway and Sweden. Moreover, we compare the results from the latest annual reports and specify how data may be acquired from the registries for research. Denmark has a separate clinical lung cancer registry with more detailed data than the other Nordic countries. Finland and Norway report lung cancer survival as relative survival, whereas Denmark and Sweden report overall survival. The Danish Lung Cancer Registry and the Swedish Cancer Registry do not receive data from the Cause of Death registries in contrast to the Finnish Cancer Registry and the Cancer Registry of Norway. The lung cancer registries in Denmark, Finland, Norway and Sweden have high level of completeness. However, several important differences between the registries may bias comparative analyses. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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3. State governance versus dentists' autonomy - the case of Swedish dental care.
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Franzén, Cecilia
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DENTAL care , *MEDICAL quality control , *MEDICAL personnel , *COST effectiveness , *ATTITUDE (Psychology) , *DENTISTRY , *DENTISTS , *JOB satisfaction - Abstract
Objective: A trend towards the state governance of healthcare through quality indicators and national clinical guidelines has been observed, and it is argued that this trend can be a challenge to the autonomy of healthcare professionals. In Sweden, these regulatory tools have been implemented in combination with subsidies for adult dental care that are based on guideline recommendations which serve to ensure that dental care is evidence-based and cost-effective. This paper aims to analyse the implications of these changes regarding dentists' autonomy and whether the government's political intentions can be fulfilled.Material and Methods: The paper is based on documents from government authorities and professional theories.Results: The financial control over Swedish dental care has been strengthened, and it can be argued that this is a step in the right direction from a societal point of view, as public resources are limited. Dentists' professional autonomy with their patients is not affected, which is appropriate, as patients should be treated according to their individual needs and expectations.Conclusions: This article shows that the state's governance does not directly detail dentists' work, which indicates a balance between state governance and dentists' autonomy. However, further research is required to get knowledge on Swedish dentists' view of the governance. [ABSTRACT FROM AUTHOR]- Published
- 2018
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4. A Nordic-Baltic perspective on indications for proton therapy with strategies for identification of proper patients.
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Brandal, Petter, Bergfeldt, Kjell, Aggerholm-Pedersen, Ninna, Bäckström, Gloria, Kerna, Irina, Gubanski, Michael, Björnlinger, Kirsten, Evensen, Morten E., Kuddu, Maire, Pettersson, Erik, Brydøy, Marianne, Hellebust, Taran P., Dale, Einar, Valdman, Alexander, Weber, Lars, and Høyer, Morten
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INTERNATIONAL agencies , *INTERPROFESSIONAL relations , *MEETINGS , *TUMORS , *ADULT education workshops , *TREATMENT effectiveness , *PATIENT selection , *PROTON therapy - Abstract
The beneficial effects of protons are primarily based on reduction of low to intermediate radiation dose bath to normal tissue surrounding the radiotherapy target volume. Despite promise for reduced long-term toxicity, the percentage of cancer patients treated with proton therapy remains low. This is probably caused by technical improvements in planning and delivery of photon therapy, and by high cost, low availability and lack of high-level evidence on proton therapy. A number of proton treatment facilities are under construction or have recently opened; there are now two operational Scandinavian proton centres and two more are under construction, thereby eliminating the availability hurdle. Even with the advantageous physical properties of protons, there is still substantial ambiguity and no established criteria related to which patients should receive proton therapy. This topic was discussed in a session at the Nordic Collaborative Workshop on Particle Therapy, held in Uppsala 14–15 November 2019. This paper resumes the Nordic-Baltic perspective on proton therapy indications and discusses strategies to identify patients for proton therapy. As for indications, neoplastic entities, target volume localisation, size, internal motion, age, second cancer predisposition, dose escalation and treatment plan comparison based on the as low as reasonably achievable (ALARA) principle or normal tissue complication probability (NTCP) models were discussed. Importantly, the patient selection process should be integrated into the radiotherapy community and emphasis on collaboration across medical specialties, involvement of key decision makers and knowledge dissemination in general are important factors. An active Nordic-Baltic proton therapy organisation would also serve this purpose. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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5. Ongoing and future clinical trials in particle therapy in the Nordic countries.
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Witt Nyström, Petra, Bratland, Åse, Minn, Heikki, and Grau, Cai
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CLINICAL trials , *INTERPROFESSIONAL relations , *RADIOTHERAPY , *EVIDENCE-based medicine - Abstract
In the Nordic countries, as in the rest of the world, particle therapy as a radiotherapy modality, is evolving, albeit the hard evidence for the clinical benefit still is scarce. However, a common goal for the Nordic countries is to include a minimum of 80% of the patients treated with particle therapy into clinical trials. In this paper, we summarize the current status of clinical trials involving particle therapy in the Nordic countries, with an overview of both active and coming trials. So far, one is closed for inclusion and data are being analyzed, seven trials are actively recruiting patients and several more trials are underway. No common Nordic trial has yet been designed, nor is in the planning phase, and the authors will discuss the obstacles as well as the opportunities a common Nordic platform may represent. [ABSTRACT FROM AUTHOR]
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- 2020
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6. Determinants of outcome in lumbar spinal stenosis surgery.
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Sigmundsson, Freyr Gauti
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LUMBAR vertebrae surgery , *PAIN , *ORTHOPEDIC surgery , *ACADEMIC medical centers , *CHI-squared test , *CONFIDENCE intervals , *STATISTICAL correlation , *ACADEMIC dissertations , *HEALTH surveys , *LONGITUDINAL method , *LUMBAR vertebrae , *MAGNETIC resonance imaging , *PATIENT satisfaction , *QUALITY of life , *QUESTIONNAIRES , *SPINAL stenosis , *STATISTICS , *DATA analysis , *MULTIPLE regression analysis , *VISUAL analog scale , *TREATMENT effectiveness , *PROPORTIONAL hazards models , *DATA analysis software , *DESCRIPTIVE statistics , *MANN Whitney U Test - Abstract
The article presents a college thesis which investigated the determinants of the outcomes of lumbar spinal stenosis surgery and is based on several papers previously published by F. G. Sigmundsson, B. Jönsson and B.Strömqvist, including papers which appeared in a 2013 issue of "Acta Orthopaedica", a 2012 issue of "Acta Orthopaedica" and a 2014 issue of "Spine".
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- 2014
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7. Nordic Cancer Registries -- an overview of their procedures and data comparability.
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Pukkala, Eero, Engholm, Gerda, Schmidt, Lise Kristine Højsgaard, Storm, Hans, Khan, Staffan, Lambe, Mats, Pettersson, David, Ólafsdóttir, Elínborg, Tryggvadóttir, Laufey, Hakanen, Tiina, Malila, Nea, Virtanen, Anni, Johannesen, Tom Børge, Larønningen, Siri, and Ursin, Giske
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REPORTING of diseases , *TUMORS , *MATHEMATICAL variables , *DATA analysis , *SYMPTOMS , *DISEASE incidence , *ACQUISITION of data - Abstract
Background: The Nordic Cancer Registries are among the oldest population-based registries in the world, with more than 60 years of complete coverage of what is now a combined population of 26 million. However, despite being the source of a substantial number of studies, there is no published paper comparing the different registries. Therefore, we did a systematic review to identify similarities and dissimilarities of the Nordic Cancer Registries, which could possibly explain some of the differences in cancer incidence rates across these countries. Methods: We describe and compare here the core characteristics of each of the Nordic Cancer Registries: (i) data sources; (ii) registered disease entities and deviations from IARC multiple cancer coding rules; (iii) variables and related coding systems. Major changes over time are described and discussed. Results: All Nordic Cancer Registries represent a high quality standard in terms of completeness and accuracy of the registered data. Conclusions: Even though the information in the Nordic Cancer Registries in general can be considered more similar than any other collection of data from five different countries, there are numerous differences in registration routines, classification systems and inclusion of some tumors. These differences are important to be aware of when comparing time trends in the Nordic countries. [ABSTRACT FROM AUTHOR]
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- 2018
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8. Reverse hybrid total hip arthroplasty.
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Wangen, Helge, Havelin, Leif I, Fenstad, Anne M, Hallan, Geir, Furnes, Ove, Pedersen, Alma B, Overgaard, Søren, Kärrholm, Johan, Garellick, Göran, Mäkelä, Keijo, Eskelinen, Antti, and Nordsletten, Lars
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DIAGNOSIS of bone fractures , *COMPARATIVE studies , *CONFIDENCE intervals , *BONE fractures , *FEMUR injuries , *REOPERATION , *TOTAL hip replacement , *RELATIVE medical risk , *TREATMENT effectiveness , *PROPORTIONAL hazards models , *DESCRIPTIVE statistics , *KAPLAN-Meier estimator , *DIAGNOSIS - Abstract
Background and purpose — The use of a cemented cup together with an uncemented stem in total hip arthroplasty (THA) has become popular in Norway and Sweden during the last decade. The results of this prosthetic concept, reverse hybrid THA, have been sparsely described. The Nordic Arthroplasty Register Association (NARA) has already published 2 papers describing results of reverse hybrid THAs in different age groups. Based on data collected over 2 additional years, we wanted to perform in depth analyses of not only the reverse hybrid concept but also of the different cup/stem combinations used. Patients and methods — From the NARA, we extracted data on reverse hybrid THAs from January 1, 2000 until December 31, 2013. 38,415 such hips were studied and compared with cemented THAs. The Kaplan-Meier method and Cox regression analyses were used to estimate the prosthesis survival and the relative risk of revision. The main endpoint was revision for any reason. We also performed specific analyses regarding the different reasons for revision and analyses regarding the cup/stem combinations used in more than 500 cases. Results — We found a higher rate of revision for reverse hybrids than for cemented THAs, with an adjusted relative risk of revision (RR) of 1.4 (95% CI: 1.3–1.5). At 10 years, the survival rate was 94% (CI: 94–95) for cemented THAs and 92% (95% CI: 92–93) for reverse hybrids. The results for the reverse hybrid THAs were inferior to those for cemented THAs in patients aged 55 years or more (RR =1.1, CI: 1.0–1.3; p < 0.05). We found a higher rate of early revision due to periprosthetic femoral fracture for reverse hybrids than for cemented THAs in patients aged 55 years or more (RR =3.1, CI: 2.2–4.5; p < 0.001). Interpretation — Reverse hybrid THAs had a slightly higher rate of revision than cemented THAs in patients aged 55 or more. The difference in survival was mainly caused by a higher incidence of early revision due to periprosthetic femoral fracture in the reversed hybrid THAs. [ABSTRACT FROM PUBLISHER]
- Published
- 2017
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9. Validation study of an end-of-life questionnaire from the Swedish Register of Palliative Care.
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Martinsson, Lisa, Heedman, Per-Anders, Lundströöm, Staffan, Fransson, Greger, and Axelsson, Bertil
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CHI-squared test , *COMPUTER software , *REPORTING of diseases , *LONGITUDINAL method , *RESEARCH methodology , *MEDICAL quality control , *MEDICAL personnel , *MEDICAL records , *ELECTRONIC health records , *PALLIATIVE treatment , *TERMINAL care , *DATA analysis , *RESEARCH methodology evaluation ,RESEARCH evaluation - Abstract
Quality in health care is important to measure and palliative care is no exception. The Swedish Register of Palliative Care (SRPC) is a national quality register that focuses on the last week of life. It collects data with an end-of-life questionnaire (ELQ), which is validated in this study. Material and methods. This study included 169 consecutive patients who had died at a palliative unit. That unit had developed a computerized end-of-life medical record module that enabled a comparison between reported data and medical records, illustrating the validity of the registry questionnaire. The paper versions of the ELQs filled in at the unit were also inspected to determine the extent of registration mistakes when completing the web questionnaire. Results. Data from the medical records and data from the ELQs reported to the SRPC showed a congruity of 22 to 100%. A working limit of acceptable congruity was set to 80%. Eight questions fell below that line. Some of these differences were caused by systematic errors. The paper versions filled in at the unit and the data from the ELQs reported to the SRPC had a congruity of between 96% and 100%, with the exception of one question about pain evaluation, which had 91% congruity. Discussion. The results in this study will be used to improve and further develop the register. Some questions need to be more specific to promote more valid registrations. Consensus on quality issues in end-of-life care would simplify the work of writing and answering the questionnaire. It is desirable to perform a similar study at hospital wards that do not specialize in palliative care; however, the anticipated lack of palliative documentation could make such a study difficult to perform. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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10. Professional fluoride varnish treatment for caries control: a systematic review of clinical trials.
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Petersson, Lars G., Twetman, Svante, Dahlgren, Helena, Norlund, Anders, Holm, Anna-Karin, Nordenram, Gunilla, Lagerlöf, Folke, Söder, Birgitta, Källestål, Carina, Mejàre, Ingegerd, Axelsson, Susanna, and Lingström, Peter
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FLUORIDES , *DENTAL caries , *DENTAL care , *SYSTEMATIC reviews , *CLINICAL trials - Abstract
The aim of this paper was systematically to evaluate the caries-preventive effect of professional fluoride varnish treatments. A search of the literature for articles published between 1966 and August 2003 was carried out in electronic databases, reference lists of articles, and selected textbooks in accordance with the strategy of the Swedish Council on Technology Assessment in Health Care. Out of 302 identified papers, 24 randomized and controlled clinical trials comparing fluoride varnish with placebo, no active treatment or other fluoride preventive regimens of at least 2 years' study duration were included. The trials that met the inclusion criteria were assessed independently and systematically by at least two reviewers and scored from A to C according to predetermined criteria for methodology and performance. The main outcome measure was the preventive fraction expressed as a percentage. The results displayed limited evidence (evidence level 3) for the caries preventive effect of topical applications of fluoride varnishes in permanent teeth. The average prevented fraction was 30% (0-69%) when compared with untreated controls. Inconclusive evidence (evidence level 4) was found for fluoride varnish treatment in the primary dentition and in adults. This systematic review reinforces the need for future clinical research of high quality, incorporating modern concepts of clinical performance and evaluation to assess dental caries control using professional fluoride varnish. [ABSTRACT FROM AUTHOR]
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- 2004
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11. Partnership status affects the association between gastrointestinal symptoms and quality of life after radiation therapy for prostate cancer.
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Alsadius, David, Olsson, Caroline, Wilderäng, Ulrica, and Steineck, Gunnar
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CHI-squared test , *CONFIDENCE intervals , *GASTROINTESTINAL system , *GASTROINTESTINAL diseases , *MULTIVARIATE analysis , *NONPARAMETRIC statistics , *PROSTATE tumors , *QUALITY of life , *QUESTIONNAIRES , *STATISTICS , *LOGISTIC regression analysis , *DATA analysis software , *SIGNIFICANT others , *DESCRIPTIVE statistics , *SYMPTOMS , *PSYCHOLOGY - Abstract
Purpose. To study if partnership modifies the effect of gastrointestinal symptoms on quality of life after radiation therapy for prostate cancer. Material and methods. Using a study-specific questionnaire we conducted a cross-sectional follow-up of the occurrence gastrointestinal symptoms and quality of life after radiation therapy for prostate cancer. We obtained information from 874 prostate cancer survivors treated with radiation therapy at the Sahlgrenska University Hospital, Sweden between 1994 and 2006. In this paper we describe how partnership status affects the association between gastrointestinal symptoms and quality of life. Results. We found that unpartnered men with gastrointestinal symptoms reported a lower quality of life than unpartnered men without such symptoms. Unpartnered men with symptoms had an excess risk of low quality of life compared with unpartnered men without symptoms for those experiencing altered composition of stools, prevalence ratio 3.8 (95% CI 1.1-13.1), leakage, 3.6 (1.3-10.1), sensory bowel symptoms, 4.5 (1.6-12.8), and for urgency, 4.2 (1.2-15.1). We also found that unpartnered men with symptoms had an excess risk of low quality of life compared with partnered men with symptoms for those experiencing altered composition of stools, prevalence ratio 2.9 (95% CI 1.4-5.8), leakage 2.8 (1.2-6.4), sensory bowel symptoms 3.4 (1.5-7.4), urgency 2.6 (1.2-5.8), and for any gastrointestinal symptom 2.5 (1.3-4.9). Conclusion. Unpartnered men may represent a group that is specifically vulnerable to the distressful effects of gastrointestinal symptoms after radiation therapy for prostate cancer. [ABSTRACT FROM AUTHOR]
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- 2014
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12. Four and five dimensional radiotherapy with reference to prostate cancer -- de? nitions, state of the art and further directions -- an overview.
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LENNERNÄS, BO, CASTELLANOS, ENRIQUE, NILSSON, STEN, and LEVITT, SEYMOUR
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RADIOTHERAPY , *ACADEMIC medical centers , *ANATOMY , *PROSTATE tumors , *RISK assessment - Abstract
Radiotherapy (RT) always requires a compromise between tumor control and normal tissue side-effects. Technical innova- tion in radiation therapy (RT), such as three dimensional RT, is now established. Concerning prostate cancer (PC), it is reasonable to assume that RT of PC will increase in the future. The combination of small margins, a movable target (prostate), few fractions and high doses will probably demand dynamically positioning systems and in real time. This is called four dimensional radiotherapy (4DRT). Moreover, biological factors must be included in new treatments such as hypofractionation schedules. This new era is called five dimensional radiotherapy, 5DRT. In this paper we discuss new concepts in RT in respect to PC. [ABSTRACT FROM AUTHOR]
- Published
- 2011
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13. A modular cementless stem vs. cemented long-stem prostheses in revision surgery of the hip.
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Weiss, Rüdiger J, Stark, André, and Kärrholm, Johan
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AGE distribution , *ANALYSIS of variance , *BONE resorption , *COMPUTER software , *CONFIDENCE intervals , *LONGITUDINAL method , *ORTHOPEDIC apparatus , *ORTHOPEDIC implants , *PROSTHETICS , *REOPERATION , *RESEARCH funding , *SURVIVAL analysis (Biometry) , *TOTAL hip replacement , *DATA analysis , *MULTIPLE regression analysis , *PROPORTIONAL hazards models - Abstract
Background and purpose Modular cementless revision prostheses are being used with increasing frequency. In this paper, we review risk factors for the outcome of the Link MP stem and report implant survival compared to conventional cemented long-stem hip revision arthroplasties. Patients and methods We used data recorded in the Swedish Hip Arthroplasty Register. 812 consecutive revisions with the MP stem (mean follow-up time 3.4 years) and a control group with 1,073 cemented long stems (mean follow-up time 4.2 years) were included. Kaplan-Meier analysis was used to determine implant survival. The Cox regression model was used to study risk factors for reoperation and revision. Results The mean age at revision surgery for the MP stem was 72 (SD 11) years. Decreasing age (HR == 1.1, 95% CI: 1--1.1), multiple previous revisions (HR == 2.6, 95% CI: 1.1--6.2), short stem length (HR == 2.4, 95% CI: 1.1--5.2), standard neck offset (HR == 5, 95% CI: 1.5--17) and short head-neck length (HR == 5.3, 95% CI 1.4--21) were risk factors for reoperation. There was an overall increased risk of reoperation (HR == 1.7, 95% CI: 1.3--2.4) and revision (HR == 1.9, 95% CI: 1.2--3.1) for the MP prostheses compared to the controls. Interpretation The cumulative survival with both reoperation and revision as the endpoint was better for the cemented stems with up to 3 years of follow-up. Thereafter, the survival curves converged, mainly because of increasing incidence of revision due to loosening in the cemented group. We recommend the use of cemented long stems in patients with limited bone loss and in older patients. [ABSTRACT FROM AUTHOR]
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- 2011
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14. Tailored chemotherapy doses based on toxicity in breast cancer result in similar quality of life values, irrespective of given dose levels.
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Iiristo, Mariann, Wiklund, Tom, Wilking, Nils, Bergh, Jonas, and Brandberg, Yvonne
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QUALITY of life , *ANALYSIS of variance , *BREAST tumors , *CANCER chemotherapy , *COMBINATION drug therapy , *DOXORUBICIN , *DOSE-effect relationship in pharmacology , *DRUG toxicity , *FACTORIAL experiment designs , *FLUOROURACIL , *STATISTICAL sampling , *STATISTICS , *DATA analysis , *PATIENT-centered care , *CYCLOPHOSPHAMIDE , *DRUG dosage - Abstract
Background. From March 1994 to March 1998, breast cancer patients (an estimated relapse risk with 70% or more within five years with standard therapy) were randomised to treatment with tailored fluorouracil, epirubicin, and cyclophosphamide (FEC) therapy or FEC followed by marrow-supported high dose therapy in the Scandinavian Breast Group 9401 study. The aim of the present paper was to investigate differences in toxicity and eight health-related quality of life (HRQoL) variables (physical functioning, role functioning, emotional functioning, social functioning, cognitive functioning, fatigue, nausea-vomiting, and global quality of life) between women in the six dose steps used in the tailored and granulocyte colony stimulating factor supported FEC-arm at the assessment point 16 weeks after random assignment to treatment. Methods. The European Organization and Treatment of Cancer Quality of Life Questionnaire EORTC QLQ-C30 were mailed to the patients. Results. A total of 157 (87%) in the tailored FEC-group responded to the questionnaire within the time frame 16 weeks after inclusion in the study. Overall, toxicity was low, reaching grade 1--2 also in the higher dose steps. There were no overall differences between the dose steps on any of the tested HRQoL variables. Patients at dose step 4 scored statistically significantly higher on physical functioning than patients at dose step 1 (p == 0.022) and compared to those at dose step 2 (p == 0.014). Patients at dose steps −−2 and −−1 (combined to one group) reported statistically significantly higher mean scores on cognitive functioning than patients at dose step 1 (p == 0.022). Conclusion. Patients who received higher doses, based on the tailored dosing strategy, did not seem to have worse HRQoL than those who had lower doses. [ABSTRACT FROM AUTHOR]
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- 2011
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15. Cancer rehabilitation: A Nordic and European perspective.
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Hellbom, Maria, Bergelt, Corinna, Bergenmar, Mia, Gijsen, Brigitte, Loge, Jon Håvard, Rautalathi, Matti, Smaradottir, Agnes, and Johansen, Christoffer
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CANCER patients , *CANCER patient rehabilitation , *HEALTH services accessibility , *MEDICAL care , *HEALTH policy , *REHABILITATION centers - Abstract
Background. The increasing incidence of cancer combined with prolonged survival times seen throughout the western world increases the need for rehabilitation. Diagnosis and treatment for cancer may have substantial effects on the patients' physical, psychological, social and existential well-being. The aim of this paper is to describe the current situation in cancer rehabilitation in the Nordic countries, the Netherlands and Germany. Material and methods. Description of the current situation in cancer rehabilitation in the Nordic countries and literature review. Results. Rehabilitation as defined by multiple organizations covers a multidimensional view on chronic disease and its effect on the patient's life. The rehabilitation systems in Denmark, Finland, Sweden, Germany and the Netherlands differ depending on the differing social security and health-care systems, but rehabilitation provided is largely based on a similar, multidimensional and multidisciplinary understanding of cancer rehabilitation. Research on rehabilitation efforts in European countries indicates that there is substantial evidence with regard to single interventions which can be part of cancer rehabilitation. Discussion. In order to assure patients and families continuing quality of life, rehabilitation should be an integral and continuous part of all cancer care. [ABSTRACT FROM AUTHOR]
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- 2011
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16. Routine Diagnostic Patch-testing with Formaldehyde 2.0% (0.60 mg/cm²) may be an Advantage Compared to 1.0%.
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Hauksson, Inese, Ponten, Ann, Gruvberger, Birgitta, Tsaksson, Marlene, and Bruze, Magnus
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CONTACT dermatitis , *ALLERGY diagnosis , *FORMALDEHYDE , *ALLERGENS , *PATIENTS - Abstract
Our clinical experience has suggested that the presently recommended patch-test concentration (1.0%) for formaldehyde in the baseline series might be too low. Therefore, consecutively patch-tested dermatitis patients were tested simultaneously with formaldehyde 1.0% and 2.0% (w/v) in aqua. Formaldehyde 1.0% and 2.0% were applied with a micro-pipette (15 μl) to filter paper discs in Finn Chambers (0.30 mg/cm² and 0.60 mg/cm², respectively). A total of 1397 patients with dermatitis were patchtested. In all, 68 (4.9%) patients reacted positively to formaldehyde; 37 reacted only to 2.0%, 29 reacted to both concentrations, and 2 reacted only to 1.0%. Significantly more patients were thus diagnosed with contact allergy to formaldehyde 2.0% compared with 1.0% (p<0.001). We detected 0.1%, 0.4%, and 29.6% irritant reactions to 1.0%, 2.0%, and 3.0% formaldehyde, respectively. We conclude that, with an optimized patch-test technique, doubling the dose per area detects significantly more contact allergies to formaldehyde, but an even higher test concentration causes too many irritant reactions to be usable. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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17. Radioactive iodine in thyroid medicine-How it started in Sweden and some of today's challenges.
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Mattsson, Sören, Johansson, Lennart, Jönsson, Helene, and Nosslin, Bertil
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IODINE isotopes , *ISOTOPES , *THYROID cancer , *RADIATION dosimetry , *METASTASIS , *CANCER treatment - Abstract
In Sweden, radioactive iodine for thyroid diagnostics and therapy was introduced by Jan Waldenström (1906–1996) and Bengt Skanse (1918–1963). The paper describes the start of the clinical use of radioiodine, the various iodine isotopes available, measurement techniques and dosimetry. There are still problems to solve in relation to an optimal clinical use of radioiodine. One of the remaining challenges is to get consensus about the goal of the treatment of hyperthyreosis, as well as about a method for individual absorbed dose calculations. Careful dose estimates will prevent unnecessary radiation exposure and constitute a base for a future optimised radioiodine therapy. For the dose calculation, it is important to understand if there is any clinically significant temporary reduction in the ability of thyroid tissue to trap or retain 131I-iodide following prior administration of a diagnostic activity of 131I-iodide (stunning of the thyroid). This may be of special concern in connection with treatment of thyroid cancer and its metastases. Finally, the production capacity, availability and delivery of 123I have to be improved to increase clinical access to this radionuclide, which is optimal for diagnostic imaging and which gives lower absorbed dose and therefore also less risk for thyroid stunning than 131I. [ABSTRACT FROM AUTHOR]
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- 2006
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18. A systematic review of Swedish research in orthodontics during the past decade.
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Bondemark, Lars and Lilja-Karlander, Eva
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ORTHODONTICS , *DENTISTRY , *ORTHODONTISTS , *DENTAL research , *PERIODICAL publishing - Abstract
The aims of this systematic review were to identify the study designs and topics of Swedish orthodontic articles, to elucidate their international position, and to verify in which scientific journals the articles had been published in the past decade. A search of the Medline database for papers published between 1992 and 2002 was made using the Medical Search Heading terms 'orthodontics', 'malocclusion', 'cephalometry', and 'facial bones and growth'. Two independent reviewers selected the articles of Swedish origin and categorized each article according to research design and principal topic. Overall, 15,571 articles in orthodontic research were found, and the Swedish contribution was 1.9% with the majority of these (71.5%) being submitted by universities. Most of the Swedish articles (84.5%) had been published in 10 journals and many high-quality studies with orthodontic interest were published in non-orthodontic journals with higher impact factor scores than the orthodontic journals. Every second study was prospective, and of these, 15 (5.2% of all Swedish articles) were randomized clinical trials (RCTs). It was found that nearly every third study, prospective as well as retrospective, was uncontrolled. The main classification was treatment studies (51.9%), followed by development (18.6%) and diagnostic information (10.7%) studies. Thus, the majority of the articles evaluated therapeutic interventions; however, although the RCT is the preferred study design in evaluation studies, few used this method. In an era focused on evidence-based medicine, studies with an RCT design will be the future challenge for research in the field of orthodontics. [ABSTRACT FROM AUTHOR]
- Published
- 2004
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19. Cancer Survival in Sweden 1960-1998.
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Talbäck, Mats, Stenbeck, Magnus, Rosen, Måns, Barlow, Lotti, and Glimelius, Bengt
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CANCER patients , *LIFE expectancy , *BLOOD diseases , *SURVEYS - Abstract
This paper summarizes a comprehensive study of cancer survival in Sweden from 1960 to 1998. A total of 1 021 421 persons and 40 different cancer sites were included in the analyses. The main outcome measure is the relative survival rate (RSR) for different sites and follow-up times after diagnosis. The 10-year RSR for all sites combined has increased steadily--from 26.6% among men and 41.8% among women in the 1960s, to 44.6% (men) and 57.6% (women) in the 1990s. The expectation of life for a person diagnosed with cancer today is about 7 years longer than that of one diagnosed during the mid-1960s. About 3 years are gained due to changes in the relative distribution of various cancer types and about 4 years due to improved relative survival. During the 1990s substantial survival improvements were observed not only for uncommon types, such as testicular cancer, Hodgkin's lymphoma and some other haematologic malignancies, but also for cancer of the rectum, kidney and malignant melanoma. Survival for breast and cervical cancer also improved during the 1990s, but not that for pancreatic, liver or lung cancer. [ABSTRACT FROM AUTHOR]
- Published
- 2003
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20. A Systematic Overview of Chemotherapy Effects in Gastric Cancer.
- Author
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Janunger, Karl Gunnar, Hafström, Larsolof, Nygren, Peter, and Glimelius, Bengt
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STOMACH cancer , *MEDICAL care , *TUMOR classification , *PREOPERATIVE care , *CLINICAL trials , *DRUG therapy - Abstract
A systematic review of chemotherapy trials in several tumour types was performed by The Swedish Council of Technology Assessment in Health Care (SBU). The procedures for the evaluation of the scientific literature are described separately (Acta Oncol 2001; 40: 155-65). This overview of the literature on chemotherapy in the treatment of gastric cancer is based on 153 scientific papers including one meta-analysis, 18 reviews, 60 randomised studies and 57 prospective studies. The trials consist of 12 367 patients. The conclusions reached can be summarized into the following points: •A meta-analysis of 21 randomised adjuvant studies revealed a statistically significant survival benefit. The Odds Ratio (OR) is 0.84 (95% confidence interval, 95% CI, 0.74-0.96). However, by analysing Western world and Asian studies separately, a statistically significant difference can be noticed; the Western world studies showed an OR of 0.96 (95% CI 0.83-1.12) and the Asian an OR of 0.58 (95% CI 0.44-0.76). The cause of this difference is not apparent. There is not sufficient evidence to recommend adjuvant chemotherapy as routine treatment in the Western world. •Preoperative chemotherapy given to patients with non-resectable tumours or locally advanced potentially resectable tumours has achieved resectability rates of 40-100% and potentially curative resections in 37-80%. One out of two randomised studies showed a significant survival benefit, but reported data are not convincing. Experimental data in favour of preoperative therapy has not yet been confirmed in randomised clinical studies. Therapy is only justified in controlled clinical trials. •Published studies on the use of intraperitoneal chemotherapy are few and not conclusive regarding the efficiency and safety. This method of drug administration is, accordingly, justified only in controlled clinical trials. •In advanced gastric cancer, phase II studies have indicated better response rates using drug combinations than using single drug regimens, differences that have not, however, been convincingly demonstrated in randomised studies. No firm conclusions can be drawn regarding the superiority for any of the studied drug combinations with respect to response or survival gain. •A statistically significant survival benefit has been shown in trials comparing drug combinations with a best supportive care arm in the treatment of advanced gastric cancer. However, the number of included patients is small. The median survival benefit in advanced disease is in the range of three to nine months. •The use of chemotherapy in advanced gastric cancer is justified in selected patients, e.g. in younger patients in good performance status, low tumour burden and no other serious medical condition after adequate information of potential gains and risks. •The influence of chemotherapy on quality of life in advanced gastric cancer has been reported in only a few studies. It appears that about 50% of the patients have a clinically relevant relief of tumour-related symptoms and thereby improved quality of life. In one study, quality-adjusted survival was estimated to a median of six months in the treated patients compared with two months in the controls. •The quality of the literature addressing chemotherapy for gastric cancer is frequently poor with few properly designed randomised trials. In a number of randomised multi-centre adjuvant studies the inclusions rates are remarkably low, which reduces the scientific value of the studies. [ABSTRACT FROM AUTHOR]
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- 2001
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21. Radioactive iodine in thyroid medicine.
- Author
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Rasmuson, Torgny
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RADIOISOTOPES , *IODINE deficiency diseases - Abstract
The author reflects on radioactive iodine in thyroid medicine in reference to several papers presented during the meeting on thyroid medicine in Umeå, Sweden in September 2005. He referred to S. Mattsson and L. Johansson's presentations of 36 different isotopes of iodine as the most frequently used for morphologic diagnosis. The author also cited the different measures in optimizing the use of radioactive iodine in treating thyroid cancer as presented by Gertrud Berg.
- Published
- 2006
- Full Text
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