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  • DISEASE  (3)
  • EPIDEMIOLOGY CONSORTIUM  (3)
  • 1
    Keywords: CIGARETTE-SMOKING ; HUMAN-PAPILLOMAVIRUS ; ORAL-CANCER ; UPPER AERODIGESTIVE TRACT ; occupational exposures ; ALCOHOL-DRINKING ; SOCIOECONOMIC INEQUALITIES ; EPIDEMIOLOGY CONSORTIUM ; INTERNATIONAL HEAD ; OROPHARYNGEAL-CANCER
    Abstract: Low socioeconomic status has been reported to be associated with head and neck cancer risk. However, previous studies have been too small to examine the associations by cancer subsite, age, sex, global region and calendar time and to explain the association in terms of behavioral risk factors. Individual participant data of 23,964 cases with head and neck cancer and 31,954 controls from 31 studies in 27 countries pooled with random effects models. Overall, low education was associated with an increased risk of head and neck cancer (OR = 2.50; 95% CI = 2.02 - 3.09). Overall one-third of the increased risk was not explained by differences in the distribution of cigarette smoking and alcohol behaviors; and it remained elevated among never users of tobacco and nondrinkers (OR = 1.61; 95% CI = 1.13 - 2.31). More of the estimated education effect was not explained by cigarette smoking and alcohol behaviors: in women than in men, in older than younger groups, in the oropharynx than in other sites, in South/Central America than in Europe/North America and was strongest in countries with greater income inequality. Similar findings were observed for the estimated effect of low versus high household income. The lowest levels of income and educational attainment were associated with more than 2-fold increased risk of head and neck cancer, which is not entirely explained by differences in the distributions of behavioral risk factors for these cancers and which varies across cancer sites, sexes, countries and country income inequality levels. What's new? Head and neck cancer is among the most common and increasing cancers in the world. Besides smoking, alcohol drinking, and human papilloma virus infections, low socioeconomic status has been implicated as one of the most important risk factors for this cancer type. This large multinational study authoritatively confirmed that lower education status and lower income are associated with increased risk for head and neck cancer development. Smoking and alcohol consumption could not entirely explain the risk associated with low socioeconomic factors, and therefore, as the authors argue, need to be more explicitly recognized in the etiology associated with head and neck cancer.
    Type of Publication: Journal article published
    PubMed ID: 24996155
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  • 2
    Keywords: RISK-FACTORS ; GASTRIC-CANCER ; UPPER AERODIGESTIVE TRACT ; pooled analysis ; PHARYNGEAL CANCER ; ALCOHOL-DRINKING ; EPIDEMIOLOGY CONSORTIUM ; INTERNATIONAL HEAD ; LARYNGEAL-CANCER ; BUCCAL POUCH CARCINOGENESIS
    Abstract: Scope: Only a few studies analyzed the role of allium vegetables with reference to head and neck cancers (HNC), with mixed results. We investigated the potential favorable role of garlic and onion within the International Head and Neck Cancer Epidemiology (INHANCE) Consortium. Methods and results: We analyzed pooled individual-level data from eight case-control studies, including 4590 cases and 7082 controls. We estimated odds ratios (ORs) and 95% confidence intervals (CIs) for associations between garlic and onion intakes and HNC risk. Compared with no or low garlic use, the ORs of HNC were 0.95 (95% CI 0.71-1.27) for intermediate and 0.74 (95% CI 0.55-0.99) for high garlic use (p for trend = 0.02). The ORs of HNC for increasing categories of onion intake were 0.91 (95% CI 0.68-1.21) for 〉 1 to 〈= 3 portions per week, and 0.83 (95% CI 0.60-1.13) for 〉 3 portions per week (p for trend = 0.02), as compared to 〈1 portion per week. We found an inverse association between high onion intake and laryngeal cancer risk (OR = 0.69; 95% CI 0.54-0.88), but no significant association for other subsites. Conclusion: The results of this pooled-analysis support a possible moderate inverse association between garlic and onion intake and HNC risk.
    Type of Publication: Journal article published
    PubMed ID: 26018663
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  • 3
    Keywords: CANCER ; THERAPY ; INFORMATION ; COHORT ; DISEASE ; incidence ; RISK ; RISK-FACTORS ; BREAST ; BREAST-CANCER ; DESIGN ; AGE ; WOMEN ; PROSPECTIVE COHORT ; smoking ; cancer risk ; UNITED-STATES ; ALCOHOL ; ALCOHOL-CONSUMPTION ; CONSUMPTION ; BIRTH COHORT ; POSTMENOPAUSAL WOMEN ; MASS INDEX ; ORAL-CONTRACEPTIVE USE ; REQUIRING PROLONGED OBSERVATION ; METAANALYSIS ; HORMONAL FACTORS ; ANTHROPOMETRIC MEASURES ; EPITHELIAL OVARIAN
    Abstract: BACKGROUND: Only about half the studies that have collected information on the relevance of women's height and body mass index to their risk of developing ovarian cancer have published their results, and findings are inconsistent. Here, we bring together the worldwide evidence, published and unpublished, and describe these relationships. METHODS AND FINDINGS: Individual data on 25,157 women with ovarian cancer and 81,311 women without ovarian cancer from 47 epidemiological studies were collected, checked, and analysed centrally. Adjusted relative risks of ovarian cancer were calculated, by height and by body mass index. Ovarian cancer risk increased significantly with height and with body mass index, except in studies using hospital controls. For other study designs, the relative risk of ovarian cancer per 5 cm increase in height was 1.07 (95% confidence interval [CI], 1.05-1.09; p〈0.001); this relationship did not vary significantly by women's age, year of birth, education, age at menarche, parity, menopausal status, smoking, alcohol consumption, having had a hysterectomy, having first degree relatives with ovarian or breast cancer, use of oral contraceptives, or use of menopausal hormone therapy. For body mass index, there was significant heterogeneity (p〈0.001) in the findings between ever-users and never-users of menopausal hormone therapy, but not by the 11 other factors listed above. The relative risk for ovarian cancer per 5 kg/m(2) increase in body mass index was 1.10 (95% CI, 1.07-1.13; p〈0.001) in never-users and 0.95 (95% CI, 0.92-0.99; p = 0.02) in ever-users of hormone therapy. CONCLUSIONS: Ovarian cancer is associated with height and, among never-users of hormone therapy, with body mass index. In high-income countries, both height and body mass index have been increasing in birth cohorts now developing the disease. If all other relevant factors had remained constant, then these increases in height and weight would be associated with a 3% increase in ovarian cancer incidence per decade. Please see later in the article for the Editors' Summary.
    Type of Publication: Journal article published
    PubMed ID: 22606070
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  • 4
    Keywords: CANCER ; MODEL ; MODELS ; DIAGNOSIS ; DISEASE ; DISEASES ; HISTORY ; POPULATION ; RISK ; REDUCTION ; SKIN ; ASSOCIATION ; PROGRESSION ; LYMPHOMA ; AGE ; WOMEN ; case-control studies ; INDIVIDUALS ; asthma ; ATOPY ; case control study ; case-control study ; MEDICAL HISTORY ; SAN-FRANCISCO ; allergy ; hay fever ; non-Hodgkin lymphoma ; LEVEL ; pooled analysis ; BIRTH-ORDER ; USA ; CANCER INCIDENCE ; cancer research ; NON-HODGKIN-LYMPHOMA ; FRANCISCO BAY AREA ; HEMATOLOGICAL MALIGNANCIES ; ECZEMA ; CONFIDENCE-INTERVALS ; INTERLYMPH ; ALLERGIES ; CONFIDENCE
    Abstract: We performed a pooled analysis of data on atopic disease and risk of non-Hodgkin lymphoma (NHL) from 13 case-control studies, including 13,535 NHL cases and 16,388 controls. Self-reported atopic diseases diagnosed 2 years or more before NHL diagnosis (cases) or interview (controls) were analyzed. Pooled odds ratios (OR) and 95% confidence intervals (95% CI) were computed in two-stage random-effects or joint fixed-effects models, and adjusted for age, sex, and study center. When modeled individually, lifetime history of asthma, flay fever, specific allergy (excluding hay fever, asthma, and eczema), and food allergy were associated with a significant reduction in NHL, risk, and there was no association for eczema. When each atopic condition was included in the same model, reduced NHL risk was only associated with a history of allergy (OR, 0.80; 95% CI, 0.68-0.94) and reduced R-cell NHL risk was associated with history of hay fever (OR, 0.85; 95% CI, 0.77-0.95) and allergy (OR, 0.84; 95% CI, 0.76-0.93). Significant reductions in B-cell NHL risk were also observed individuals who were likely to be truly or highly atopic-those with hay fever, allergy, or asthma and at least one other atopic condition over their lifetime. The inverse associations were consistent for the diffuse large B-cell and follicular subtypes. Eczema was positively associated with lymphomas of the skin; misdiagnosis of lymphoma as eczema is likely, but progression of eczema to cutaneous lymphoma cannot be excluded. This Pooled study shows evidence of a modest but consistent reduction in the risk of B-cell NHL associated with atopy. [Cancer Res 2009;69(16):6482-9]
    Type of Publication: Journal article published
    PubMed ID: 19654312
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  • 5
    Keywords: BLOOD ; MODEL ; DISEASE ; RISK ; PATIENT ; ARTHRITIS ; RISK-FACTORS ; T cell ; T-CELL ; TYPE-1 ; ASSOCIATION ; DISORDER ; LYMPHOMA ; risk factors ; SWEDEN ; diabetes ; case-control studies ; CLUES ; MULTIPLE-SCLEROSIS ; FOLLICULAR LYMPHOMA ; INFLAMMATORY-BOWEL-DISEASE ; SYSTEMIC-LUPUS-ERYTHEMATOSUS ; DISORDERS ; case-control study ; MEDICAL HISTORY ; POPULATION-BASED COHORT ; PATTERN ; T-CELL LYMPHOMA ; rheumatoid arthritis ; RHEUMATOID-ARTHRITIS ; non-Hodgkin lymphoma ; analysis ; SUBTYPES ; CELIAC-DISEASE ; PARTICIPANTS ; multiple sclerosis ; pooled analysis ; USA ; CANCER INCIDENCE ; RISK-FACTOR ; B-CELL ; ANEMIA ; PERNICIOUS-ANEMIA ; systemic ; RATIO ; non Hodgkin lymphoma ; POOLED-ANALYSIS ; non-Hodgkin ; CONSORTIUM ; CONFIDENCE-INTERVALS ; MARGINAL ZONE LYMPHOMAS ; INTERLYMPH ; AUTOIMMUNE ; HEMATOPOIETIC CANCER ; hemolytic anemia ; PRIMARY SJOGRENS-SYNDROME ; systemic lupus erythematosus
    Abstract: Some autoimmune disorders are increasingly recognized as risk factors for non-Hodgkin lymphoma (NHL) overall, but large-scale systematic assessments of risk of NHL subtypes are lacking. We performed a pooled analysis of self-reported autoimmune conditions and risk of NHL and subtypes, including 29 423 participants in 12 case-control studies. We computed pooled odds ratios (OR) and 95% confidence intervals (CI) in a joint fixed-effects model. Sjogren syndrome was associated with a 6.5-fold increased risk of NHL, a 1000-fold increased risk of parotid gland marginal zone lymphoma (OR = 996; 95% CI, 216-4596), and with diffuse large B-cell and follicular lymphomas. Systemic lupus erythematosus was associated with a 2.7-fold increased risk of NHL and with diffuse large B-cell and marginal zone lymphomas. Hemolytic anemia was associated with diffuse large B-cell NHL. T-cell NHL risk was increased for patients with celiac disease and psoriasis. Results for rheumatoid arthritis were heterogeneous between studies. Inflammatory bowel disorders, type 1 diabetes, sarcoidosis, pernicious anemia, and multiple sclerosis were not associated with risk of NHL or subtypes. Thus, specific autoimmune disorders are associated with NHL risk beyond the development of rare NHL subtypes in affected organs. The pattern of associations with NHL subtypes may harbor clues to lymphomagenesis
    Type of Publication: Journal article published
    PubMed ID: 18263783
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  • 6
    Keywords: COHORT ; RISK-FACTORS ; WOMEN ; METAANALYSIS ; BODY-MASS INDEX ; SECULAR TRENDS ; EPIDEMIOLOGY CONSORTIUM ; INTERNATIONAL HEAD ; CARDIORESPIRATORY DISEASE ; LEG LENGTH
    Abstract: Several epidemiological studies have shown a positive association between adult height and cancer incidence. The only study conducted among women on mouth and pharynx cancer risk, however, reported an inverse association. This study aims to investigate the association between height and the risk of head and neck cancer (HNC) within a large international consortium of HNC. We analyzed pooled individual-level data from 24 case-control studies participating in the International Head and Neck Cancer Epidemiology Consortium. Odds ratios (ORs) and 95 % confidence intervals (CIs) were estimated separately for men and women for associations between height and HNC risk. Educational level, tobacco smoking, and alcohol consumption were included in all regression models. Stratified analyses by HNC subsites were performed. This project included 17,666 cases and 28,198 controls. We found an inverse association between height and HNC (adjusted OR per 10 cm height = 0.91, 95 % CI 0.86-0.95 for men; adjusted OR = 0.86, 95 % CI 0.79-0.93 for women). In men, the estimated OR did vary by educational level, smoking status, geographic area, and control source. No differences by subsites were detected. Adult height is inversely associated with HNC risk. As height can be considered a marker of childhood illness and low energy intake, the inverse association is consistent with prior studies showing that HNC occur more frequently among deprived individuals. Further studies designed to elucidate the mechanism of such association would be warranted.
    Type of Publication: Journal article published
    PubMed ID: 24271556
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