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Results of two or five years of adjuvant tamoxifen correlated to steroid receptor and S-phase levels. South Sweden Breast Cancer Group, and South-East Sweden Breast Cancer Group.

A Swedish cooperative trial demonstrated that 5 years of adjuvant tamoxifen was more beneficial than 2 years of tamoxifen in the treatment of postmenopausal women with estrogen receptor (ER) positive, early stage, invasive breast cancer. The main aim of the present study was to investigate the importance of progesterone receptor (PgR) and ER concentration levels for patients participating in the trial and still distant recurrence free two years after the primary operation. Subgroup analyses revealed that only patients with ER positive and PgR positive breast cancer had improved distant recurrence free survival (DRFS) by prolonged tamoxifen therapy (p = 0.0016). Patients with ER negative and PgR negative as well as ER positive and PgR negative tumors showed no significant effect of prolonged tamoxifen (p = 0.53 and p = 0.80, respectively). The percentage of ER negative and PgR positive breast cancers was too small (2.2%) for any meaningful subgroup analysis. There was a significant positive trend that the concentration level of PgR (high positive vs. low positive vs. negative) decreased the recurrence rate for those with prolonged therapy. No corresponding pattern was found for the ER content. S-phase fraction did not correlate to the recurrence rate of PgR positive breast cancers. Patients recurring during tamoxifen therapy had receptor negative tumors to a greater extent than those recurring after tamoxifen treatment. In conclusion, prolonged tamoxifen therapy for 5 years instead of 2 years was found to be beneficial for patients with ER positive and PgR positive breast cancer, whereas three extra years of tamoxifen had little or no effect for patients with ER positive but PgR negative tumors as well as for steroid receptor negative patients.

Adult↗

Fertility and perinatal health among Finnish immigrants in Sweden.

Several studies have reported poorer infant outcome among immigrants, but contrary evidence also exists. Between 1940 and 1999 more than a half million Finns emigrated to Sweden, which made Finns the largest minority group in Sweden. Our aim was to investigate fertility trends, parturients' background and pregnancy outcomes among Finns in Sweden, and to compare the findings with those obtained among Swedes in Sweden and Finns in Finland. The data came from the Finnish and Swedish Medical Birth Registers for the years 1987-1998. All deliveries by women born in Finland and having given birth in Sweden (N=33874) were compared with a 10% sample of all deliveries by Swedish parturients in Sweden (N=108549) and of all Finnish deliveries (n=75133). Among Finns in Sweden, the number of live births per 1000 women aged 15-49 years declined significantly in the late 1990s. The change in the total fertility rate was less dramatic: the rate for Finns in Sweden followed the total Swedish rate although it remained from 5% to 10% higher up to the mid-1990s. Finns who had given birth in Sweden were older, had a higher parity and a higher prevalence of previous miscarriages, and smoked more often than did Swedes in Sweden or Finns in Finland. The crude infant outcomes of Finns having given birth in Sweden were equal to those among Swedes in Sweden (except for the incidence of small for gestational age), but poorer than in Finland. Biological factors explained the differences between Finns in Sweden and Finland in being small for gestational age, and biological factors and smoking explained the difference in prematurity. The difference in low birth weight remained statistically significant (3.9% versus 3.6% among singletons). In conclusion, fertility trends followed the pattern prevailing in the resident country. The relatively good outcome of children whose mothers were born in Finland but who had given birth in Sweden can partly be explained by the healthy migrant effect.

Adolescent↗

Utilization of dental services in refugees in Sweden 1975-1985.

Prior to 1940 the population of Sweden was one of the most homogeneous in Europe, with only 0.5% foreign born. Fifty years later, in 1990, the proportion of immigrants was around 15%. In order to describe and analyze consumption of dental care in different refugee groups in Sweden, data registered by the Department of Immigration and the National Social Insurance Board, on a random sample of 2489 refugees arriving in Sweden 1975-85, were merged. Information on nationality, date of arrival in Sweden, date of granting of permanent resident status and statistics on consumption of dental care were retrieved. During the period studied a total of 50,521 refugees arrived in Sweden. The average interval between arrival in Sweden and the first dental visit was 4.5 yr (95% < 1: 4.2-4.7). The total treatment time during the first course of treatment was 165.5 min (95% < 1: 148.7-182.3). Consumption of dental care did not decrease with an increased number of treatments. Only 38% of the refugees had visited a dentist at all in Sweden. With increasing number of years in Sweden the number of courses of dental treatment increased, but 41% of the refugees who had visited the dentist in Sweden had done so only once. This study shows a low utilization of dental services among refugees in Sweden in general. Refugees with dental visits in Sweden, in particular, had a high dental consumption.

Adolescent↗

Geographical distribution, host associations, and vector roles of ticks (Acari: Ixodidae, Argasidae) in Sweden.

This review covers the geographic distribution and host relationships of the tick species in Sweden. Ixodes uriae White, I. caledonicus Nuttall, I. unicavatus Neumann, I. arboricola Schulze & Schlottke, and I. lividus Koch are ornithophagous species. I. trianguliceps Birula, I. canisuga Johnston, I. hexagonus Leach, and Argas vespertilionis (Latreille) are mammalophagous. I. ricinus (L.) and Haemaphysalis punctata Canestrini & Fanzago feed on both birds and mammals. All these tick species may be considered to be permanently present in Sweden. I. persulcatus Schulze, Hyalomma marginatum Koch, and the brown dog tick, Rhipicephalus sanguineus (Latreille), may be regarded as not indigenous to Sweden although they may be regularly introduced by spring-migrating birds or imported dogs, respectively. The first European record of the American dog tick, Dermacentor variabilis (Say), is reported. There are several records of Hyalomma aegyptium (L.) from imported tortoises in Sweden. Excluding other ticks imported on exotic pets and zoo animals, another 13 tick species are listed that may occur, at least occasionally, in Sweden. Because of its wide geographic distribution, great abundance, and wide host range, I. ricinus is medically the most important arthropod in northern Europe. I. ricinus is common in southern and south-central Sweden and along the coast of northern Sweden and has been recorded from 29 mammal species, 56 bird species, and two species of lizards in Sweden alone. The potential introduction to Sweden of exotic pathogens with infected ticks (e.g., I. persulcatus and H. marginatum on birds or Dermacentor spp. and R. sanguineus on mammals) is evident.

Animals↗

Allergic dermatitis (sweet itch) of Icelandic horses in Sweden: an epidemiological study.

A survey of allergic dermatitis (sweet itch) in Sweden contained information on 441 Icelandic horses. Results of a questionnaire indicated that approximately 15 per cent of the country's Icelandic horses suffered from the disease. The prevalence of allergic dermatitis was significantly higher among horses imported from Iceland (26.2 per cent) compared to that of Swedish-born animals (6.7 per cent). In addition, horses born in Iceland were significantly more severely affected than horses born in Sweden. The risk of allergic dermatitis in Sweden appeared to be more than six times higher for horses exported from Iceland to Sweden relative to that of horses originally born in Sweden. The prevalence of disease for horses of seven years or older was 30 per cent for Icelandic-born individuals as compared to 7.3 per cent for horses born in Sweden. Similarly, the risk of allergic dermatitis in Sweden for horses of seven years or older appeared to be nearly 10 times higher for horses imported from Iceland relative to that of horses born in Sweden. Allergic dermatitis usually appeared during the third grazing season for imported horses and during the fourth season for horses born in Sweden. Furthermore, the course of the disease tended to become worse with time. Analysis of the prevalence of allergic dermatitis relative to gender revealed no significant differences. Certain geographical variations in the prevalence of the disease was also found.

Age Factors↗

Migration and mortality: a 20 year follow up of Finnish twin pairs with migrant co-twins in Sweden.

STUDY OBJECTIVE: Finland has a higher mortality overall and for major causes of death than Sweden, primarily in men. The objective of this study was to analyse mortality in migrants from Finland to Sweden. DESIGN: A longitudinal study based on the Finnish Twin Cohort Study. Information about migration from Finland to Sweden, duration of stay in Sweden for the migrants, and deaths 1976-1995 was obtained from national registers. Observed numbers of deaths in migrants were compared with expected numbers based on the age standardised mortality experience of the Finnish Twin Cohort. First deaths in migrants and non-migrants of migrant discordant pairs were compared controlling for genetic and early childhood factors. PARTICIPANTS: Twin pairs of the Finnish Twin Cohort Study where at least one twin had migrated to Sweden (1542 twin pairs). MAIN RESULTS: Among men, migrants from Finland to Sweden showed an overall similar mortality compared with all subjects of the Finnish Twin Cohort (SMR 1.1; 95% CI 0.9 to 1.4). Mortality from non-violent causes was increased for migrants with at most 20 years in Sweden (SMR 1.9; 95% CI 1.2 to 2.6) and decreased in those with a longer stay (SMR 0.7; 95% CI 0.4 to 0.9). Similar results were obtained concerning first deaths in twin pairs discordant for migration. Among women, migrants had an increased mortality overall (SMR 1.4; 95% CI 1.0 to 1.8), from cardiovascular disease (SMR 1.7; 95% CI 1.0 to 2.7), and from violent causes (SMR 2.5; 95% CI 1.2 to 4.6) compared with all women of the Finnish Twin Cohort. In analyses of migrant discordant pairs only first deaths from cardiovascular disease tended to be more common in the migrants than in non-migrant co-twins. CONCLUSIONS: Migrants from Finland to Sweden seem to have an overall mortality comparable to that prevailing in Finland suggesting no strong influence on mortality by the migration. Duration of stay seems to be associated with mortality in the migrants, at least in men, with a lower mortality after several years in Sweden.

Adult↗

Use of lipid-lowering drugs from 1990 to 1994: an international comparison among Australia, Finland, Italy (Emilia Romagna Region), Norway and Sweden.

OBJECTIVE: To compare the overall utilisation pattern of lipid-lowering drugs between 1990 and 1994 in Australia, Finland, Italy, Norway and Sweden as well as the pattern of use with respect to age and gender in Italy and Sweden. METHODS: Data were retrieved from regulatory authorities in each country for the 5-year period and analysed according to the ATC/DDD methodology (Anatomical Therapeutic Chemical classification/Defined Daily Doses). Utilisation was calculated as the DDDs for 1000 inhabitants per day for all drugs of the ATC category B04 (serum lipid-reducing agents). Data from Sweden and Italy were also compared with respect to gender and age. RESULTS: In 1994, Australia demonstrated the highest degree of utilisation (11.9 DDD) and the Nordic Countries the lowest (Sweden 5.6; Norway 4.9; Finland 4.0). In all countries except Italy, a steady increase was observed; in Italy, utilisation of these drugs reached a maximum in 1992 (11.5 DDD), but then underwent a reduction which was caused by restrictions in the reimbursement status in 1993 (10.4) and 1994 (6.7). Administration of statins increased in all countries, becoming the most used group of the B04 class. In 1988, the number of different drugs listed by each national health service ranged from 4 (Norway) to 16 (Italy); in 1994 it ranged from 6 (Norway) to 9 (Sweden). Analysis with respect to gender showed the opposite pattern in Sweden (males 4.6 and females 3.3 in 1992; 6.2 and 4.5, respectively, in 1994) than in Italy (males 10.8 and females 17.8 in 1992; 6.4 and 9.2, respectively, in 1994). Exposure was highest in people aged 60-69 years in both countries, followed by age group 50-59 in Sweden and 70-79 in Italy. CONCLUSIONS: Large variations in the utilisation of lipid-lowering drugs exist between countries, with Australia and Italy much higher than others. Of the drugs in the ATC category B04, the use of statins predominates in all countries, but to varying degrees. The large difference in the degree of drug utilisation with respect to age and gender between Italy and Sweden suggests major deviations from evidence-based medicine.

Adolescent↗

Health technology assessment and screening in Sweden.

OBJECTIVES: To describe health technology assessment (HTA) and policies concerning three screening procedures in Sweden. METHODS: The main source of information was reports from the Swedish Council for Technology Assessment in Health Care (SBU) and other governmental reports, supplemented by the professional literature. RESULTS: Prevention is emphasized in the healthcare services of Sweden. Specifically, screening is encouraged and supported when it is deemed beneficial. Sweden has a strong orientation toward evidence-based health care and HTA. Since its inauguration in 1987, SBU has fostered the use of HTA in making policy and clinical decisions in Sweden. Government policy in Sweden is to encourage services that are beneficial and cost-effective and discourages services that are not. Screening is no exception to this general rule. The three cases examined in this paper-mammography screening, PSA screening, and routine ultrasound screening in pregnancy-have all been formally assessed in Sweden. Assessments have been an integral part of policy making concerning these and other preventive measures. Mammography screening has been widely implemented. However, as in other countries, screening is often carried out in an opportunistic fashion, so that PSA screening, in particular, is carried out more in Sweden than can be justified by the evidence. CONCLUSIONS: Mammography screening is promoted and is completely available to the target group. PSA screening is discouraged, but not with complete success. Ultrasound in pregnancy is widely used, not because of good evidence of impact on mortality and morbidity among newborns, but because it increases the detection rate of congenitally malformed fetuses and because of evidence of positive effects on the management and planning of deliveries, as well as because of psychological and ethical implications of the technology. HTA is an important part of health policy making in Sweden.

Adult↗

Comparison of infant mortality in the United States and Sweden.

This study summarizes differences between Sweden and the United States regarding certain aspects of infant mortality. Sweden has the lowest infant mortality rate (IMR) and the United States is number 16. Both the neonatal and postneonatal mortality rates of Sweden are considerably lower. Since 1960, the neonatal mortality rate of Sweden was reduced by a greater percentage. The incidence of low birth weight in Sweden is considerably lower. In the United States, no state has an IMR as low as that of Sweden. Nonwhite babies, babies born out of wedlock, and those of teenage or "old" mothers have a higher IMR. The article describes in some detail the organization and network of services in Sweden that may be playing an important role in Sweden's low IMR.

Asphyxia Neonatorum↗

Nursing and health care in Sweden.

Sweden, one of the Nordic countries, has a long history of social justice and equality of access to health care. Nursing plays an important role in this and nursing education is of a high standard. The aim of this paper is to describe Sweden's health system and nursing within it, thereby giving Australian nurses information which may generate an interest in, and provide background for, collaborative work. It is part of a series initiated by the first author who visited Sweden, Iceland and England in 2000 under the auspices of a Churchill Fellowship, and who has returned to Sweden and England to continue work begun during the Fellowship. Sweden's health service is characterised by an ethic of egalitarianism and high standards; primary health care plays a large role and tertiary health care is easily accessible. Nursing in Sweden is of a high standard, with devolvement of responsibility and decision-making to those working in the wards and units. Nursing education has been influenced by the historical development of nursing in Europe and today, Swedish nurses enjoy a high standard of university education with government support readily available to make specialist education accessible. Because of the similarities in both the cultures, and nursing, in Australia and Sweden, Australian nurses would find Sweden a wonderful country in which to implement cross-cultural, collaborative work. This paper provides

Adolescent↗