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Nested case-control study

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https://www.readbyqxmd.com/read/27919096/should-we-screen-for-vitamin-d-deficiency-grand-rounds-discussion-from-beth-israel-deaconess-medical-center
#1
Howard Libman, Alan O Malabanan, Gordon J Strewler, Eileen E Reynolds
The U.S. Preventive Services Task Force (USPSTF) recently issued guidelines on screening for vitamin D deficiency. The guidelines were based on randomized trials of vitamin D deficiency screening and treatment, as well as on case-control studies nested within the Women's Health Initiative. The USPSTF concluded that current evidence is insufficient to assess the benefits and harms of screening for vitamin D deficiency in asymptomatic adults. Compared with placebo or no treatment, vitamin D was associated with decreased mortality; however, benefits were no longer seen after trials of institutionalized persons were excluded...
December 6, 2016: Annals of Internal Medicine
https://www.readbyqxmd.com/read/27918771/association-of-selective-serotonin-reuptake-inhibitors-with-the-risk-for-spontaneous-intracranial-hemorrhage
#2
Christel Renoux, Sarah Vahey, Sophie Dell'Aniello, Jean-François Boivin
Importance: Selective serotonin reuptake inhibitors (SSRIs) may increase the risk for spontaneous intracranial hemorrhage (ICH), an effect that is in theory linked to the strength of inhibition of serotonin reuptake of an antidepressant. However, whether antidepressants that are strong inhibitors of serotonin reuptake actually increase the risk for ICH and the effect of concomitant use of antithrombotics are unknown. Objectives: To assess the risk for ICH associated with the use of SSRIs compared with tricyclic antidepressants (TCAs) among new users of antidepressants and according to the relative affinity of the antidepressant for the serotonin transporter and to assess whether concomitant use of antithrombotics modifies this risk...
December 5, 2016: JAMA Neurology
https://www.readbyqxmd.com/read/27917368/sex-steroid-hormone-single-nucleotide-polymorphisms-pesticide-use-and-the-risk-of-prostate-cancer-a-nested-case-control-study-within-the-agricultural-health-study
#3
Carol H Christensen, Kathryn Hughes Barry, Gabriella Andreotti, Michael C R Alavanja, Michael B Cook, Scott P Kelly, Laurie A Burdett, Meredith Yeager, Laura E Beane Freeman, Sonja I Berndt, Stella Koutros
Experimental and epidemiologic investigations suggest that certain pesticides may alter sex steroid hormone synthesis, metabolism or regulation, and the risk of hormone-related cancers. Here, we evaluated whether single-nucleotide polymorphisms (SNPs) involved in hormone homeostasis alter the effect of pesticide exposure on prostate cancer risk. We evaluated pesticide-SNP interactions between 39 pesticides and SNPs with respect to prostate cancer among 776 cases and 1,444 controls nested in the Agricultural Health Study cohort...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27916669/prevalence-and-morbidity-of-undiagnosed-celiac-disease-from-a-community-based-study
#4
Rok Seon Choung, Scott A Larson, Shahryar Khaleghi, Alberto Rubio-Tapia, Inna G Ovsyannikova, Katherine S King, Joseph J Larson, Brian D Lahr, Gregory A Poland, Michael J Camilleri, Joseph A Murray
BACKGROUND & AIMS: Little is known about the prevalence and burden of undiagnosed celiac disease in individuals younger than 50 years old. We determined the prevalence and morbidity of undiagnosed celiac disease in individuals younger than 50 years in a community. METHODS: We tested sera from 31,255 residents of Olmsted County, Minnesota (younger than 50 years old) without a prior diagnosis of celiac disease assay using an assay for immunoglobulin A (IgA) against tissue transglutaminase (tTG); in subjects with positive test results, celiac disease was confirmed using an assay for endomysial IgA...
December 1, 2016: Gastroenterology
https://www.readbyqxmd.com/read/27914102/examining-temporal-effects-on-cancer-risk-in-the-international-nuclear-workers-study-inworks
#5
Robert D Daniels, Stephen J Bertke, David B Richardson, Elisabeth Cardis, Michael Gillies, Jacqueline A O'Hagan, Richard Haylock, Dominique Laurier, Klervi Leuraud, Monika Moissonnier, Isabelle Thierry-Chef, Ausrele Kesminiene, Mary K Schubauer-Berigan
The paper continues the series of publications from the International Nuclear Workers Study cohort (INWORKS) that comprises 308,297 workers from France, the United Kingdom and the United States, providing 8.2 million person-years of observation from a combined follow-up period (at earliest 1944 to at latest 2005). These workers' external radiation exposures were primarily to photons, resulting in an estimated average career absorbed dose to the colon of 17.4 milligray. The association between cumulative ionizing radiation dose and cancer mortality was evaluated in general relative risk models that describe modification of the excess relative risk (ERR) per gray (Gy) by time since exposure and age at exposure...
December 3, 2016: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/27911327/anticholinergic-exposure-and-risk-of-pneumonia-in-persons-with-alzheimer-s-disease-a-nested-case-control-study
#6
Pasi Lampela, Anna-Maija Tolppanen, Antti Tanskanen, Jari Tiihonen, Sirpa Hartikainen, Heidi Taipale
BACKGROUND: Risk of pneumonia is increased in persons with Alzheimer's disease (AD). In some studies, anticholinergic drugs (AC) have been associated with an increased pneumonia risk. OBJECTIVE: We analyzed the risk of pneumonia associated with ACs in persons with AD. METHODS: We performed a nested case-control study using register-based data from a Finnish nationwide MEDALZ cohort including all community-dwelling persons diagnosed with AD during 2005-2011...
November 28, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27911152/non-tuberculous-mycobacterial-bloodstream-infections-in-patients-with-indwelling-vascular-catheters-the-role-of-sickle-cell-anaemia
#7
Babatunde Edun, Ansal Shah, Martin Durkin, Melanie Whitmire, Shanetta Patterson Williams, Helmut Albrecht, Majdi Al-Hasan, Sharon Weissman
INTRODUCTION: Few studies have examined risk factors for nontuberculous mycobacteria (NTM) bloodstream infections (BSI) involving indwelling vascular catheters (IDVC). Sickle cell anaemia (HbSS/SC) is known to affect several aspects of the immune system leading to relative immune deficiency. The purpose of this retrospective nested case-control study was to determine if HbSS/SC is a risk factor for NTM BSI among individuals with IDVCs. METHODS: All NTM IDVC infections (cases) at two tertiary hospitals from 2008 to 2014 were reviewed...
December 2, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27905981/correlates-of-meal-skipping-in-young-adults-a-systematic-review
#8
REVIEW
Felicity J Pendergast, Katherine M Livingstone, Anthony Worsley, Sarah A McNaughton
BACKGROUND: Meal skipping rates may be highest during young adulthood, a period of transition and development. Although these dietary behaviours may increase future risk of chronic disease, limited research has investigated correlates of meal skipping in young adults. METHODS: A systematic literature search was conducted to identify studies that investigated correlates of meal skipping behaviours in young adults (aged 18-30 years). EBSCO host, MEDLINE Complete, Global Health, Scopus, EMBASE, Web of Science and Informit platforms were searched for eligible articles...
December 1, 2016: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/27904972/the-influence-of-preoperative-symptoms-on-the-death-of-patients-with-small-intestinal-neuroendocrine-tumors
#9
John Eriksson, Hans Garmo, Per Hellman, Catharina Ihre-Lundgren
BACKGROUND: Small intestinal neuroendocrine tumors (SI-NETs) are uncommon tumors with an annual incidence of about 1 per 100,000. Usually, SI-NETs have a slow progression, and patients often present with generalized disease. Many patients do well, and the disease has a relatively favorable 5-year survival rate. Some SI-NETs, however, have a more negative prognosis. This study aimed to establish prognostic factors for death identifiable at primary surgery. METHODS: A nested case-control study investigated 1150 patients from the cohort of all patients with a diagnosis of SI-NETs in Sweden between 1961 and 2001...
November 30, 2016: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/27904027/retinal-vascular-changes-and-prospective-risk-of-disabling-dementia-the-circulatory-risk-in-communities-study-circs
#10
Hiroshige Jinnouchi, Akihiko Kitamura, Kazumasa Yamagishi, Masahiko Kiyama, Hironori Imano, Takeo Okada, Renzhe Cui, Mitsumasa Umesawa, Isao Muraki, Mina Hayama-Terada, Ryo Kawasaki, Tomoko Sankai, Tetsuya Ohira, Hiroyasu Iso
AIM: To investigate the association of retinal vascular changes with a risk of dementia in longitudinal population-based study. METHODS: We performed a nested case-control study of 3,718 persons, aged 40-89 years, enrolled between 1983 and 2004. Retinal vascular changes were observed in 351 cases with disabling dementia (average period before the onset, 11.2 years) and in 702 controls matched for sex, age, and baseline year. Incidence of disabling dementia was defined as individuals who received cares for disabilities including dementia-related symptoms and/or behavioral disturbance...
December 1, 2016: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/27903971/novel-risk-models-for-early-detection-and-screening-of-ovarian-cancer
#11
Matthew R Russell, Alfonsina D'Amato, Ciaren Graham, Emma J Crosbie, Aleksandra Gentry-Maharaj, Andy Ryan, Jatinderpal K Kalsi, Evangelia-Ourania Fourkala, Caroline Dive, Michael Walker, Anthony D Whetton, Usha Menon, Ian Jacobs, Robert L J Graham
PURPOSE: Ovarian cancer (OC) is the most lethal gynaecological cancer. Early detection is required to improve patient survival. Risk estimation models were constructed for Type I (Model I) and Type II (Model II) OC from analysis of Protein Z, Fibronectin, C-reactive protein and CA125 levels in prospectively collected samples from the United Kingdom Collaborative Trial of Ovarian Cancer Screening (UKCTOCS). RESULTS: Model I identifies cancers earlier than CA125 alone, with a potential lead time of 3-4 years...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27902461/whole-exome-sequencing-in-75-high-risk-families-with-validation-and-replication-in-independent-case-control-studies-identifies-tango2-or5h14-and-chad-as-new-prostate-cancer-susceptibility-genes
#12
Danielle M Karyadi, Milan S Geybels, Eric Karlins, Brennan Decker, Laura McIntosh, Amy Hutchinson, Suzanne Kolb, Shannon K McDonnell, Belynda Hicks, Sumit Middha, Liesel M FitzGerald, Melissa S DeRycke, Meredith Yeager, Daniel J Schaid, Stephen J Chanock, Stephen N Thibodeau, Sonja I Berndt, Janet L Stanford, Elaine A Ostrander
Prostate cancer (PCa) susceptibility is defined by a continuum from rare, high-penetrance to common, low-penetrance alleles. Research to date has concentrated on identification of variants at the ends of that continuum. Taking an alternate approach, we focused on the important but elusive class of low-frequency, moderately penetrant variants by performing disease model-based variant filtering of whole exome sequence data from 75 hereditary PCa families. Analysis of 341 candidate risk variants identified nine variants significantly associated with increased PCa risk in a population-based, case-control study of 2,495 men...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27898719/myocardial-gene-expression-profiling-to-predict-and-identify-cardiac-allograft-acute-cellular-rejection-the-get-study
#13
Diane Bodez, Hakim Hocini, Nicolas Tchitchek, Pascaline Tisserand, Nicole Benhaiem, Caroline Barau, Mounira Kharoubi, Aziz Guellich, Soulef Guendouz, Costin Radu, Jean-Paul Couetil, Bijan Ghaleh, Jean-Luc Dubois-Randé, Emmanuel Teiger, Luc Hittinger, Yves Levy, Thibaud Damy
AIMS: Serial invasive endomyocardial biopsies (EMB) remain the gold standard for acute cellular rejection (ACR) diagnosis. However histological grading has several limitations. We aimed to explore the value of myocardial Gene Expression Profiling (GEP) for diagnosing and identifying predictive biomarkers of ACR. METHODS: A case-control study nested within a retrospective heart transplant patients cohort included 126 patients with median (IQR) age 50 (41-57) years and 111 (88%) males...
2016: PloS One
https://www.readbyqxmd.com/read/27895041/infections-and-the-risk-of-incident-giant-cell-arteritis-a-population-based-case-control-study
#14
Rennie L Rhee, Peter C Grayson, Peter A Merkel, Gunnar Tomasson
OBJECTIVES: Alterations in the immune system and infections are suspected to increase susceptibility to giant cell arteritis (GCA). Recently herpes zoster has been directly implicated in the pathogenesis of GCA. We examined the association between prior infections, in particular herpes zoster, and incident GCA in a population-based cohort. METHODS: A nested case-control study was performed using an electronic database from the UK. Cases with newly diagnosed GCA were identified using a validated algorithm and compared with age-matched, sex-matched and practice-matched controls...
November 28, 2016: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/27894341/abdominal-obesity-gender-and-the-risk-of-rheumatoid-arthritis-a-nested-case-control-study
#15
Lotta Ljung, Solbritt Rantapää-Dahlqvist
BACKGROUND: The risk of development of rheumatoid arthritis (RA) could be affected by immune activation in obesity. Our objective was to evaluate the association between obesity in general, and abdominal obesity, and the risk for subsequent development of RA. METHODS: In two large population-based, prospective cohorts, 557 cases (mean age at RA symptom onset 58, SD 10 years, 68% women) who subsequently developed RA and 1671 matched controls were identified. From a health examination antedating symptom onset (median 5...
November 29, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27893841/seroprevalence-of-cutaneous-human-papillomaviruses-and-the-risk-of-external-genital-lesions-in-men-a-nested-case-control-study
#16
Shams Rahman, Dana E Rollison, Christine M Pierce Campbell, Tim Waterboer, Angelika Michel, Michael Pawlita, Luisa L Villa, Eduardo Lazcano Ponce, Wei Wang, Amy R Borenstein, Anna R Giuliano
BACKGROUND: A variety of cutaneous human papillomaviruses (HPV) are detectable in genital epithelial lesions in men and non-melanoma skin cancer patients. It remains unclear whether these viruses are associated causally with skin lesions. To date, no study has prospectively examined the association between cutaneous HPV seropositivity and development of external genital lesions (EGLs) in men. OBJECTIVES: To examine the association between seropositivity to cutaneous HPV types and the risk of subsequent development of EGLs...
2016: PloS One
https://www.readbyqxmd.com/read/27890694/cord-blood-igg-and-the-risk-of-severe-plasmodium-falciparum-malaria-in-the-first-year-of-life
#17
Linda M Murungi, Klara Sondén, Dennis Odera, Loureen B Oduor, Fatuma Guleid, Irene N Nkumama, Mark Otiende, David T Kangoye, Greg Fegan, Anna Färnert, Kevin Marsh, Faith H A Osier
Young infants are less susceptible to severe episodes of malaria but the targets and mechanisms of protection are not clear. Cord blood antibodies may play an important role in mediating protection but many studies have examined their association with the outcome of infection or non-severe malaria. Here, we investigated whether cord blood IgG to Plasmodium falciparum merozoite antigens and antibody-mediated effector functions were associated with reduced odds of developing severe malaria at different time points during the first year of life...
November 24, 2016: International Journal for Parasitology
https://www.readbyqxmd.com/read/27889598/association-between-antipsychotic-drug-use-and-cataracts-in-patients-with-bipolar-disorder-a-population-based-nested-case-control-study
#18
Che-Sheng Chu, Po-Han Chou, Yi-Huei Chen, Min-Wei Huang, Min-Yen Hsu, Tsuo-Hung Lan, Ching-Heng Lin
BACKGROUND: No previous study has focused on the association between use of antipsychotic drugs and the development of cataracts in patients with bipolar disorder (BD); hence, we aimed to examine this association in the present study. METHODS: We conducted a retrospective nested case-control study using data from the National Health Insurance Database of Taiwan between 2000 and 2011. A total of 3292 BD patients, 1684 with cataracts and 1608 controls matched for age, sex, and index date, were included...
November 19, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27889417/dietary-zinc-and-incident-calcium-kidney-stones-in-adolescence
#19
Gregory E Tasian, Michelle E Ross, Lihai Song, Robert W Grundmeier, James Massey, Michelle R Denburg, Lawrence Copelovitch, Steven Warner, Thomas Chi, David W Killilea, Marshall L Stoller, Susan L Furth
PURPOSE: To determine the association between dietary zinc intake and incident calcium kidney stones and examine the relationship between dietary zinc intake and urinary zinc excretion among adolescents. MATERIAL AND METHODS: This study was a nested case-control study conducted within a large pediatric healthcare system. Three 24-hour dietary recalls and spot urine chemistries were obtained for 30 participants aged 12-18 years with a first idiopathic calcium-based kidney stone and 30 healthy controls, matched on age, sex, race, and month of enrollment...
November 23, 2016: Journal of Urology
https://www.readbyqxmd.com/read/27888993/identifying-biomarkers-for-asthma-diagnosis-using-targeted-metabolomics-approaches
#20
William Checkley, Maria P Deza, Jost Klawitter, Karina M Romero, Jelena Klawitter, Suzanne L Pollard, Robert A Wise, Uwe Christians, Nadia N Hansel
BACKGROUND: The diagnosis of asthma in children is challenging and relies on a combination of clinical factors and biomarkers including methacholine challenge, lung function, bronchodilator responsiveness, and presence of airway inflammation. No single test is diagnostic. We sought to identify a pattern of inflammatory biomarkers that was unique to asthma using a targeted metabolomics approach combined with data science methods. METHODS: We conducted a nested case-control study of 100 children living in a peri-urban community in Lima, Peru...
December 2016: Respiratory Medicine
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