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Sökning: WFRF:(Lynch J) > (2000-2004)

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  • Narod, SA, et al. (författare)
  • Oral contraceptives and the risk of breast cancer in BRCA1 and BRCA2 mutation carriers
  • 2002
  • Ingår i: Journal of the National Cancer Institute. - : Oxford University Press (OUP). - 1460-2105. ; 94:23, s. 1773-1779
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Oral contraceptive use has been associated with an increase in the risk of breast cancer in young women. We examined whether this association is seen in women at high risk of breast cancer because they carry a mutation in one of two breast cancer susceptibility genes, BRCA1 and BRCA2. Methods: We performed a matched case-control study on 1311 pairs of women with known deleterious BRCA1 and/or BRCA2 mutations recruited from 52 centers in 11 countries. Women who had been diagnosed with breast cancer were matched to control subjects by year of birth, country of residence, mutation (BRCA1 or BRCA2), and history of ovarian cancer. All study subjects completed a questionnaire about oral contraceptive use. Odds ratios (ORs) and 95% confidence intervals (CIs) were derived by conditional logistic regression. All statistical tests were two-sided. Results: Among BRCA2 mutation carriers, ever use of oral contraceptives was not associated with an increased risk of breast cancer (OR = 0.94, 95% CI = 0.72 to 1.24). For BRCAI mutation carriers, ever use of oral contraceptives was associated With a modestly increased risk of breast cancer (OR = 1.20, 95 % CI = 1.02 to 1.40). However, compared with BRCA1 mutation carriers who never used oral contraceptives, those who used oral contraceptives for at least 5 years had an increased risk of breast cancer (OR = 1.33, 95% CI = 1.11 to 1.60), as did those who used oral contraceptives before age 30 (OR = 1.29, 95% CI = 1.09 to 1.52), those who were diagnosed with breast cancer before age 40 (OR = 1.38, 95% CI = 1.11 to 1.72), and those who first used oral contraceptives before 1975 (OR = 1.42, 95 % CI = 1.17 to 1.75). Conclusions: Among BRCA1 mutation carriers, women who first used oral contraceptives before 1975, who used them before age 30, or who used them for 5 or more years may have an increased risk of early-onset breast cancer. Oral contraceptives do not appear to be associated with risk of breast cancer in BRCA2 carriers, but data for BRCA2 carriers are limited.
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  • Beckman, Anders, et al. (författare)
  • Country of birth, socioeconomic position, and health care expenditure― a multilevel analysis of the city of Malmö, Sweden
  • 2004
  • Ingår i: Journal of Epidemiology and Community Health. - : BMJ. - 1470-2738 .- 0143-005X. ; 58:2, s. 145-149
  • Tidskriftsartikel (refereegranskat)abstract
    • Study objective: The principle of equity aims to guarantee allocation of healthcare resources on the basis of need. Therefore, people with a low income and persons living alone are expected to have higher healthcare expenditures. Besides these individual characteristics healthcare expenditure may be influenced by country of birth. This study therefore aimed to investigate the role of country of birth in explaining individual healthcare expenditure.Design: Multilevel regression model based on individuals (first level) and their country of birth (second level).Setting: The city of Malmö, Sweden.Participants: All the 52 419 men aged 40–80 years from 130 different countries of birth, who were living in Malmö, Sweden, during 1999.Main results: At the individual level, persons with a low income and persons living alone showed a higher healthcare expenditure, with regression coefficients (and 95% confidence intervals) being 0.358 (0.325 to 0.392) and 0.197 (0.165 to 0.230), respectively. Country of birth explained a considerable part (18% and 13%) of the individual differences in the probability of having a low income and living alone, respectively. However, this figure was only 3% for having some health expenditure, and barely 0.7% with regard to costs in the 74% of the population with some health expenditure.Conclusions: Malmö is a socioeconomically segregated city, in which the country of birth seems to play only a minor part in explaining individual differences in total healthcare expenditure. These differences seem instead to be determined by individual low income and living alone.
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  • Johnell, K, et al. (författare)
  • Neighbourhood social participation and women's use of anxiolytic-hypnotic drugs: a multilevel analysis.
  • 2004
  • Ingår i: Journal of Epidemiology and Community Health. - : BMJ. - 1470-2738 .- 0143-005X. ; 58:1, s. 59-64
  • Tidskriftsartikel (refereegranskat)abstract
    • Study objectives: To identify and quantify a hypothesised collective effect of the neighbourhood on individual use of anxiolytic-hypnotic drugs (AHD). To analyse the general impact of neighbourhood social participation on use of AHD, adjusting for individual characteristics. Design: Cross sectional analysis performed by multilevel logistic regression with women at the first level and neighbourhoods at the second level. Setting: Malmö (250 000 inhabitants), Sweden. Participants:15 456 women aged 45 to 73, residing in 95 neighbourhoods in Malmö, who took part in the Malmö diet and cancer study (1991–1996). Main results: The prevalence of AHD use was 5.5% in the study sample. Overall, 1.7% of the total individual differences in the propensity for using AHD were explained by the neighbourhood level. This percentage, however, differed between different individuals. Low level of social participation in the neighbourhood was associated with higher probability of AHD use (OR = 3.10 (95% CI 1.51 to 6.41)), independently of individual age, low social participation, low educational level, and living alone. This association was reduced (OR = 2.01 (95% CI 0.97 to 4.14)) after the additional accounting for individual disability pension, low self rated health, stress, and medication for somatic disorders. Conclusions: The neighbourhood level of social participation seems to affect individual use of AHD, possibly through individual characteristics. However, neighbourhood boundaries play a minor part in understanding individual AHD use in the city of Malmö.
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