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Sökning: WFRF:(Feychting Maria) > Talbäck Mats

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1.
  • Adel Fahmideh, Maral, et al. (författare)
  • Parental age and risk of genetic syndromes predisposing to nervous system tumors: nested case-control study.
  • 2018
  • Ingår i: Clinical epidemiology. - 1179-1349. ; 10, s. 729-738
  • Tidskriftsartikel (refereegranskat)abstract
    • Phacomatoses are genetic syndromes that are associated with increased risk of developing nervous system tumors. Phacomatoses are usually inherited, but many develop de novo, with unknown etiology. In this population-based study, we investigated the effect of parental age on the risk of phacomatoses in offspring.The study was a population-based nested case-control study. All individuals born and residing in Sweden between January 1960 and December 2010 were eligible for inclusion. Using the Patient Register, 4625 phacomatosis cases were identified and further classified as familial or nonfamilial. Ten matched controls per case were randomly selected from the eligible population. Data were analyzed using conditional logistic regression. Analyses were conducted for neurofibromatosis alone (n=2089) and other phacomatoses combined (n=2536).Compared with offspring of fathers aged 25-29 years, increased risk estimates of nonfamilial neurofibromatosis were found for offspring of fathers aged 35-39 years (odds ratio [OR]=1.43 [95% CI 1.16-1.74]) and ≥40 years (OR =1.74 [95% CI 1.38-2.19]). For other nonfamilial phacomatoses, the risk estimate for offspring of fathers aged ≥40 years was OR =1.23 (95% CI 1.01-1.50). Paternal age was not associated with familial phacomatoses, and no consistent association was observed with maternal age.The findings show a consistent increase in risk of de novo occurrence of phacomatoses predisposing to nervous system tumors in offspring with increasing paternal age, most pronounced for neurofibromatosis, while maternal age did not seem to influence the risk. These findings suggest an increasing rate of new mutations in the NF1 and NF2 genes in spermatozoa of older fathers.
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  • Brooke, Hannah L, et al. (författare)
  • Adult children's socioeconomic resources and mothers' survival after a breast cancer diagnosis : a Swedish population-based cohort study.
  • 2017
  • Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 7:3
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES: Socioeconomic inequalities in survival after breast cancer persist worldwide. We aim to determine whether adult offspring's socioeconomic resources contribute to inequalities in mothers' survival after breast cancer.METHODS: 14 231 women, aged 65-79 years, with a child aged ≥30 years and a first primary diagnosis of breast cancer in the National Cancer Register between 2001 and 2010 were followed until death, 10 years after diagnosis, or end of study (December 2015). Relative survival proportions and excess mortality within 10 years of diagnosis by strata of offspring's education level and disposable income were estimated using flexible parametric models accounting for measures of mothers' socioeconomic position and expected mortality in the general population.RESULTS: 4292 women died during 102 236 person-years of follow-up. Crude 10-year relative survival proportions for mothers of children with >14, 12-14 and <12 years of education were 0.89 (0.87 to 0.91), 0.87 (0.85 to 0.89) and 0.79 (0.76 to 0.81), respectively. Compared with mothers of children with >14 years of education, mothers of children with <12 or 12-14 years of education had substantially higher excess mortality (excess HR 1.69 (1.38 to 2.07) and 1.22 (1.00 to 1.48), respectively). Higher mortality did not differ between tertiles of offspring's disposable income.CONCLUSIONS: Adult offspring's education level may contribute to inequalities in mothers' survival after breast cancer. Clinicians should be aware of the educational context beyond the individual and women with less educated offsprings may require extra support. This should be considered in future research, policy frameworks and interventions aimed at reducing survival inequalities.
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4.
  • Brooke, Hannah L, et al. (författare)
  • Methodological choices affect cancer incidence rates : a cohort study.
  • 2017
  • Ingår i: Population Health Metrics. - : Springer Science and Business Media LLC. - 1478-7954. ; 15:1
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Incidence rates are fundamental to epidemiology, but their magnitude and interpretation depend on methodological choices. We aimed to examine the extent to which the definition of the study population affects cancer incidence rates.METHODS: All primary cancer diagnoses in Sweden between 1958 and 2010 were identified from the national Cancer Register. Age-standardized and age-specific incidence rates of 29 cancer subtypes between 2000 and 2010 were calculated using four definitions of the study population: persons resident in Sweden 1) based on general population statistics; 2) with no previous subtype-specific cancer diagnosis; 3) with no previous cancer diagnosis except non-melanoma skin cancer; and 4) with no previous cancer diagnosis of any type. We calculated absolute and relative differences between methods.RESULTS: Age-standardized incidence rates calculated using general population statistics ranged from 6% lower (prostate cancer, incidence rate difference: -13.5/100,000 person-years) to 8% higher (breast cancer in women, incidence rate difference: 10.5/100,000 person-years) than incidence rates based on individuals with no previous subtype-specific cancer diagnosis. Age-standardized incidence rates in persons with no previous cancer of any type were up to 10% lower (bladder cancer in women) than rates in those with no previous subtype-specific cancer diagnosis; however, absolute differences were <5/100,000 person-years for all cancer subtypes.CONCLUSIONS: For some cancer subtypes incidence rates vary depending on the definition of the study population. For these subtypes, standardized incidence ratios calculated using general population statistics could be misleading. Moreover, etiological arguments should be used to inform methodological choices during study design.
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5.
  • Brooke, Hannah L, et al. (författare)
  • Socioeconomic position and incidence of colorectal cancer in the Swedish population.
  • 2016
  • Ingår i: Cancer Epidemiology. - : Elsevier BV. - 1877-7821 .- 1877-783X. ; 40, s. 188-95
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The association between socioeconomic position and incidence of colorectal cancer is inconsistent and differs by global region. We aimed to clarify this association in the Swedish population.METHODS: We conducted a population-based open cohort study using data from Swedish national registers. We included all individuals, aged ≥30 years, residing in Sweden between 1993 and 2010. Socioeconomic position was indicated by (1) highest educational level (five groups), and (2) disposable income (quintiles). We used Poisson regression to estimate incidence rate ratios (IRR) and 95% confidence intervals (95% CI) of colon and rectal cancer, and colon and rectal dysplasia.RESULTS: In total, 97,827,817 person-years were accumulated and 82,686 cases of colorectal cancer were diagnosed. Compared to men with 'higher secondary' education, the adjusted IRRs (95% CI) of rectal cancer in men with 'primary or less', 'lower secondary', 'lower university' or 'higher university' education were: 1.06 (1.00, 1.11), 1.05 (0.99, 1.10), 0.96 (0.89, 1.03), and 0.92 (0.86, 0.98), respectively. In women, the corresponding figures were: 1.04 (0.95, 1.14), 1.03 (0.94, 1.13), 0.92 (0.82, 1.02) and 0.92 (0.82, 1.02). Disposable income was not associated with rectal cancer incidence. Adjusted IRRs of colon cancer did not differ between levels of education or disposable income overall or for specific colon sub-sites. Neither education nor disposable income was consistently associated with incidence of colon or rectal dysplasia.CONCLUSIONS: Prevention strategies for colon cancer should be applicable to individuals regardless of their socioeconomic position. However, factors conferred by education, e.g., health awareness, may be important for approaches aiming to reduce inequalities in incidence of rectal cancer. Further evaluation of cancer prevention and health promotion strategies among less educated groups is warranted.
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6.
  • Frederiksen, Line Elmerdahl, et al. (författare)
  • Psychiatric disorders in childhood cancer survivors in Denmark, Finland, and Sweden : a register-based cohort study from the SALiCCS research programme
  • 2022
  • Ingår i: The Lancet Psychiatry. - 2215-0366 .- 2215-0374. ; 69
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: A childhood cancer diagnosis and treatment-induced somatic late effects can affect the long-term mental health of survivors. We aimed to explore whether childhood cancer survivors are at higher risk of psychiatric disorders later in life than their siblings and the general population. Methods: In this register-based cohort study (part of the Socioeconomic Consequences in Adult Life after Childhood Cancer [SALiCCS] research programme), we included 5-year survivors of childhood cancer diagnosed before 20 years of age between Jan 1, 1974 and Dec 31, 2011, in Denmark, Finland, and Sweden. In Denmark and Sweden, 94·7% of individuals were born in a Nordic country (ie, Denmark, Finland, Iceland, Norway, or Sweden); similar information was not available in Finland. Data on ethnicity were not collected. Survivors were compared with their siblings and randomly selected individuals from the general population who were matched to the survivors by year of birth, sex, and geographical region. We followed up our study population from 5 years after the childhood cancer diagnosis or corresponding calendar date for matched individuals (the index date) until Aug 11, 2017, and assessed information on hospital contacts for any and specific psychiatric disorders. For siblings, the index date was defined as 5 years from the date on which they were of the same age as their sibling survivor when diagnosed with cancer. Findings: The study population included 18 621 childhood cancer survivors (9934 [53·3%] males and 8687 [46·7%] females), 24 775 siblings (12 594 [50·8%] males and 12 181 [49·2%] females), and 88 630 matched individuals (47 300 [53·4%] males and 41 330 [46·6%] females). The cumulative incidence proportion of having had a psychiatric hospital contact by 30 years of age between Jan 1, 1979, and Aug 11, 2017, was 15·9% (95% CI 15·3–16·5) for childhood cancer survivors, 14·0% (13·5–14·5) for siblings, and 12·7% (12·4–12·9) for matched individuals. Despite a small absolute difference, survivors were at higher relative risk of any psychiatric hospital contact than their siblings (1·39, 1·31–1·48) and matched individuals (hazard ratio 1·34, 95% CI 1·28–1·39). The higher risk persisted at the age of 50 years. Survivors had a higher burden of recurrent psychiatric hospital contacts and had more hospital contacts for different psychiatric disorders than their siblings and the matched individuals. Interpretation: Childhood cancer survivors are at higher long-term risk of psychiatric disorders than their siblings and matched individuals from the general population. To improve mental health and the overall quality of life after childhood cancer, survivorship care should include a focus on early signs of mental health problems, especially among high-risk groups of survivors. Funding: NordForsk, Aarhus University, Swedish Childhood Cancer Foundation, Danish Health Foundation, and Swiss National Science Foundation.
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7.
  • Khanolkar, Amal R, et al. (författare)
  • Socioeconomic position and the risk of brain tumour : a Swedish national population-based cohort study.
  • 2016
  • Ingår i: Journal of Epidemiology and Community Health. - : BMJ. - 0143-005X .- 1470-2738. ; 70:12, s. 1222-1228
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: The aim was to investigate associations between different measures of socioeconomic position (SEP) and incidence of brain tumours (glioma, meningioma and acoustic neuroma) in a nationwide population-based cohort.METHODS: We included 4 305 265 individuals born in Sweden during 1911-1961, and residing in Sweden in 1991. Cohort members were followed from 1993 to 2010 for a first primary diagnosis of brain tumour identified from the National Cancer Register. Poisson regression was used to compute incidence rate ratios (IRR) by highest education achieved, family income, occupational group and marital status, with adjustment for age, healthcare region of residence, and time period.RESULTS: We identified 5735 brain tumours among men and 7101 among women during the study period. Highly educated men (≥3 years university education) had increased risk of glioma (IRR 1.22, 95% CI 1.08 to 1.37) compared to men with primary education. High income was associated with higher incidence of glioma in men (1.14, 1.01 to 1.27). Women with ≥3 years university education had increased risk of glioma (1.23, 1.08 to 1.40) and meningioma (1.16, 1.04 to 1.29) compared to those with primary education. Men and women in intermediate and higher non-manual occupations had increased risk of glioma compared to low manual groups. Compared to those married/cohabiting, being single or previously married/cohabiting was associated with decreased risk of glioma in men. Men in non-manual occupations had ∼50% increased risk of acoustic neuroma compared to men in low manual occupations.CONCLUSIONS: We observed consistent associations between higher SEP and higher risk of glioma. Completeness of cancer registration and detection bias are potential explanations for the findings.
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8.
  • Lagergren, Jesper, et al. (författare)
  • Marital status, education, and income in relation to the risk of esophaegal and gastric cancer by histological type and site
  • 2016
  • Ingår i: Cancer. - Stockholm : Wiley. - 0008-543X .- 1097-0142. ; 122:2, s. 207-212
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUNDMarital status, income, and education might influence the risk of esophageal and gastric cancer, but the literature is limited. A large study addressing subtypes of these tumors was used to clarify these associations.METHODSA nationwide, Swedish population–based cohort study from 1991 to 2010 included individuals who were 50 years old or older. Data on exposures, covariates, and outcomes were obtained from well-maintained registers. Four esophagogastric tumor subtypes were analyzed in combination and separately: esophageal adenocarcinoma, esophageal squamous cell carcinoma, cardia adenocarcinoma, and noncardia gastric adenocarcinoma. Poisson regression was used to estimate incidence rate ratios (IRRs) and 95% confidence intervals (CIs). Analyses were stratified by sex and adjusted for confounders.RESULTSAmong 4,734,227 participants (60,634,007 person-years), 24,095 developed esophageal or gastric cancer. In comparison with individuals in a long marriage, increased IRRs were found among participants who were in a shorter marriage or were never married, remarried, divorced, or widowed. These associations were indicated for each tumor subtype but were generally stronger for esophageal squamous cell carcinoma. Higher education and income were associated with decreased IRRs in a seemingly dose-response manner and similarly for each subtype. In comparison with the completion of only primary school, higher tertiary education rendered an IRR of 0.64 (95% CI, 0.60-0.69) for men and an IRR of 0.68 (95% CI, 0.61-0.75) for women. Comparing participants in the highest and lowest income brackets (highest 20% vs lowest 20%) revealed an IRR of 0.74 (95% CI, 0.70-0.79) for men and an IRR of 0.83 (95% CI, 0.76-0.91) for women.CONCLUSIONSDivorce, widowhood, living alone, low educational attainment, and low income increase the risk of each subtype of esophageal and gastric cancer. These associations require attention when high-risk individuals are being identified.
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9.
  • Mogensen, Hanna, et al. (författare)
  • Educational attainment in survivors of childhood cancer in Denmark, Finland, and Sweden
  • 2024
  • Ingår i: British Journal of Cancer. - 0007-0920 .- 1532-1827. ; 130:2, s. 260-268
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Survivors of childhood cancer may face difficulties at school. We investigated whether childhood cancer affects attainment of upper secondary education, in a register-based cohort study from Denmark, Finland, and Sweden, where we limit bias from selection and participation.Methods: From the national cancer registers, we identified all long-term survivors of childhood cancer diagnosed aged 0–14 years in 1971–2005 (n = 7629), compared them to matched population comparisons (n = 35,411) and siblings (n = 6114), using odds ratios (OR) and 95% confidence intervals (CI).Results: Overall, 6127 survivors (80%) had attained upper secondary education by age 25, compared to 84% among comparison groups. Elevated OR for not attaining this level were mainly confined to survivors of central nervous system (CNS) tumours (ORSurv_PopComp2.05, 95%CI: 1.83–2.29). Other risk groups were survivors who had spent more time in hospital around cancer diagnosis and those who had hospital contacts in early adulthood, particularly psychiatric. Survivors of all cancer types were less likely to have attained upper secondary education without delay.Conclusions: Although survivors of childhood cancer experienced delays in their education, many had caught up by age 25. Except for survivors of CNS tumours, survivors attained upper secondary education to almost the same extent as their peers.
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10.
  • Mogensen, Hanna, et al. (författare)
  • Number of siblings and survival from childhood leukaemia : a national register-based cohort study from Sweden
  • 2021
  • Ingår i: British Journal of Cancer. - Stockholm : Karolinska Institutet, Institute of Environmental Medicine. - 0007-0920 .- 1532-1827.
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Previous studies suggest worse leukaemia survival for children with siblings, but the evidence is sparse, inconsistent and does not consider clinical factors. We explored the associations between number of siblings in the household, birth order, and survival from childhood acute lymphoid leukaemia (ALL) and acute myeloid leukaemia (AML). Methods: In this nationwide register-based study we included all children aged 1-14, diagnosed with ALL and AML between 1991-mid 2015 in Sweden (n=1692). Using Cox regression models, we estimated hazard ratios (HRs) and 95% confidence intervals (CIs) according to number of siblings and birth order, adjusting for known prognostic and sociodemographic factors. Results: A tendency towards better ALL survival among children with one, or ≥2, siblings was observed, adjHRs (95% CI): 0.73 (0.49-1.10) and 0.63 (0.40-1.00), respectively. However, this was mainly limited to children with low risk profiles. An indication of better AML survival among children with siblings was seen, adjHRs (95% CI) 0.68 (0.36-1.29) and 0.71 (0.34-1.48) but diminished after adjusting for birth order. Conclusion: Our results do not support previous findings that a larger number of siblings is associated with poorer survival. Inconsistencies might be explained by underlying mechanisms that differ between settings, but chance cannot be ruled out.
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