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Nested case-control study

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https://www.readbyqxmd.com/read/29159934/ovarian-cancer-early-detection-by-circulating-ca125-in-the-context-of-anti-ca125-autoantibody-levels-results-from-the-epic-cohort
#1
Renée T Fortner, Helena Schock, Charlotte Le Cornet, Anika Hüsing, Allison F Vitonis, Theron S Johnson, Raina N Fichorova, Titilayo Fashemi, Hidemi S Yamamoto, Anne Tjønneland, Louise Hansen, Kim Overvad, Marie-Christine Boutron-Ruault, Marina Kvaskoff, Gianluca Severi, Heiner Boeing, Antonia Trichopoulou, Eleni-Maria Papatesta, Carlo La Vecchia, Domenico Palli, Sabina Sieri, Rosario Tumino, Carlotta Sacerdote, Amalia Mattiello, N Charlotte Onland-Moret, Petra H Peeters, H B As Bueno-de-Mesquita, Elisabete Weiderpass, J Ramón Quirós, Eric J Duell, Maria-Jose Sánchez, Carmen Navarro, Eva Ardanaz, Nerea Larrañaga, Björn Nodin, Karin Jirström, Annika Idahl, Eva Lundin, Kay-Tee Khaw, Ruth C Travis, Marc Gunter, Mattias Johansson, Laure Dossus, Melissa A Merritt, Elio Riboli, Kathryn L Terry, Daniel W Cramer, Rudolf Kaaks
CA125 is the best ovarian cancer early detection marker to date; however, sensitivity is limited and complementary markers are required to improve discrimination between ovarian cancer cases and non-cases. Anti-CA125 autoantibodies are observed in circulation. Our objective was to evaluate whether these antibodies (1) can serve as early detection markers, providing evidence of an immune response to a developing tumor, and (2) modify the discriminatory capacity of CA125 by either masking CA125 levels (resulting in lower discrimination) or acting synergistically to improve discrimination between cases and non-cases...
November 21, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29158245/variations-in-presentation-management-and-patient-outcomes-of-urinary-tract-infection-a-prospective-four-country-primary-care-observational-cohort-study
#2
Christopher C Butler, Nick Francis, Emma Thomas-Jones, Carl Llor, Emily Bongard, Michael Moore, Paul Little, Janine Bates, Mandy Lau, Timothy Pickles, Micaela Gal, Mandy Wootton, Nigel Kirby, David Gillespie, Kate Rumbsy, Curt Brugman, Kerenza Hood, Theo Verheij
BACKGROUND: Regional variations in the presentation of uncomplicated urinary tract infection (UTI) and pathogen sensitivity to antibiotics have been cited as reasons to justify differences in how the infections are managed, which includes the prescription of broad-spectrum antibiotics. AIM: To describe presentation and management of UTI in primary care settings, and explore the association with patient recovery, taking microbiological findings and case mix into account...
November 20, 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/29154443/long-term-outcomes-of-patients-with-type-2-diabetes-attending-a-multidisciplinary-diabetes-kidney-disease-clinic
#3
Serena Low, Su Chi Lim, Jiexun Wang, Lee Ying Yeoh, Yan Lun Liu, Eng Kuang Lim, Yan Li Shao, Winnie Chui, Sharon Fun, Chin Lian Chua, Tavintharan Subramaniam, Chee Fang Sum
BACKGROUND: The best model of care to retard diabetic kidney disease (DKD) in the clinic is under-unexplored. We investigated the long-term renal outcomes of a joint endocrinologist-nephrologist clinic. METHODS: This was a nested case-control study derived from a cohort of patients with type 2 diabetes mellitus (T2DM) seen prospectively at a secondary care Diabetes Centre (DC). Cases ("DKD clinic group") are patients seen at the CKD clinic after being referred by physicians in DC for management of DKD...
November 20, 2017: Journal of Diabetes
https://www.readbyqxmd.com/read/29153669/maternal-serum-igf-1-igfbp-1-and-3-and-placental-growth-hormone-at-20weeks-gestation-in-pregnancies-complicated-by-preeclampsia
#4
Shutan Liao, Mark H Vickers, Rennae S Taylor, Beatrix Jones, Mhoyra Fraser, Lesley M E McCowan, Philip N Baker, Jo K Perry
OBJECTIVE: To investigate whether maternal serum concentrations of placental growth hormone (GH-V), insulin-like growth factor (IGF) 1 and 2, and IGF binding proteins (IGFBP) 1 and 3 were altered in pregnancies complicated by later preeclampsia (PE). STUDY DESIGN: In a nested case-control study, PE cases (n=71) and matched controls (n=71) were selected from the Screening for Pregnancy Endpoints (SCOPE) biobank in Auckland, New Zealand. Maternal serum hormone concentrations at 20weeks of gestation were determined by ELISA...
October 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29153586/non-specific-effects-of-childhood-vaccinations-a-case-control-study-nested-into-a-health-and-demographic-surveillance-system-in-rural-burkina-faso
#5
G Pfeiffer, A B Fisker, E Nebié, J Hengelbrock, A Sié, H Becher, O Müller
INTRODUCTION: Previous studies in African countries have been suggestive of non-specific effects (NSE) of vaccination on child survival. Live vaccines (e.g. measles, MV) have been found to reduce child mortality while inactivated vaccines (e.g. diphtheria-tetanus-pertussis, DTP) have been associated with increased mortality; NSE were often found to be sex-specific. METHODS: A case-control study nested into the Health and Demographic Surveillance System (HDSS) cohort of the Centre de Recherche en Santé de Nouna (CRSN) was conducted in northwestern Burkina Faso...
November 15, 2017: Vaccine
https://www.readbyqxmd.com/read/29152889/systemic-use-of-antibiotics-and-risk-of-diabetes-in-adults-a-nested-case-control-study-of-alberta-s-tomorrow-project
#6
Ming Ye, Paula J Robson, Dean T Eurich, Jennifer E Vena, Jian-Yi Xu, Jeffrey A Johnson
AIMS: Previous observational studies using administrative health records have suggested an increased risk of diabetes with use of antibiotics. However, unmeasured confounding factors may explain these results. This study characterized the association between systemic use of antibiotics and risk of diabetes in a cohort of adults in Canada, accounting for both clinical and self-reported disease risk factors. MATERIALS AND METHODS: In this nested case-control study, we used data from Alberta's Tomorrow Project (ATP), a longitudinal cohort study in Canada, and the linked administrative health records (2000-2015)...
November 20, 2017: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29151046/the-association-between-gastro-oesophageal-reflux-disease-and-subsequent-rheumatoid-arthritis-occurrence-a-nested-case-control-study-from-taiwan
#7
Herng-Ching Lin, Sudha Xirasagar, Cha-Ze Lee, Chung-Chien Huang, Chao-Hung Chen
OBJECTIVE: Gastro-oesophageal reflux disease (GORD) is a common comorbidity among patients with rheumatoid arthritis (RA). While GORD has been attributed to the antirheumatic medications, no studies of human cohorts have investigated a link between GORD and RA. This study investigates whether GORD is associated with a subsequent RA diagnosis over a 5-year follow-up using a population-based dataset. SETTING: Taiwan PARTICIPANTS: We used data from the Taiwan Longitudinal Health Insurance Database...
November 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/29146610/association-between-stroke-risk-and-metformin-use-in-hemodialysis-patients-with-diabetes-mellitus-a-nested-case-control-study
#8
Li-Nien Chien, Chu-Lin Chou, His-Hsien Chen, Chih-Chin Kao, Yen-Chung Lin, Yueh-Lin Wu, Jin-Shuen Chen, Li-Ying Chen, Te-Chao Fang
BACKGROUND: Metformin use reduces the incidence and severity of stroke in patients with type 2 diabetes mellitus (DM). The benefits of metformin for stroke have not been examined in hemodialysis patients with DM. METHODS AND RESULTS: Using the National Health Insurance Research Database, we identified 17 760 patients with DM and new-onset hemodialysis between 2001 and 2013. Of these, 1898 patients hospitalized for either ischemic or hemorrhagic stroke were matched to 7592 control patients according to sex, age, and year of initial hemodialysis therapy by using incidence sampling...
November 16, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29144162/association-between-metformin-adherence-and-all-cause-mortality-among-new-users-of-metformin-a-nested-case-control-study
#9
Patrice Simard, Nancy Presse, Louise Roy, Marc Dorais, Brian White-Guay, Agnès Räkel, Sylvie Perreault
BACKGROUND: Metformin presents better survival rates than other oral antidiabetics in the treatment of type 2 diabetes. However, these benefits may be dampened by inadequate treatment adherence. OBJECTIVE: We aimed to investigate the relationship between adherence level to metformin therapy and all-cause mortality over 10 years in incident metformin users. METHODS: A nested case-control study was conducted using a large cohort of beneficiaries of the Quebec public drug insurance plan, aged 45 to 85 years, who initiated metformin between 2000 and 2009...
November 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/29141722/spatio-temporal-dynamics-of-asymptomatic-malaria-bridging-the-gap-between-annual-malaria-resurgences-in-a-sahelian-environment
#10
Drissa Coulibaly, Mark A Travassos, Youssouf Tolo, Matthew B Laurens, Abdoulaye K Kone, Karim Traore, Mody Sissoko, Amadou Niangaly, Issa Diarra, Modibo Daou, Boureima Guindo, Stanislas Rebaudet, Bourema Kouriba, Nadine Dessay, Renaud Piarroux, Christopher V Plowe, Ogobara K Doumbo, Mahamadou A Thera, Jean Gaudart
In areas of seasonal malaria transmission, the incidence rate of malaria infection is presumed to be near zero at the end of the dry season. Asymptomatic individuals may constitute a major parasite reservoir during this time. We conducted a longitudinal analysis of the spatio-temporal distribution of clinical malaria and asymptomatic parasitemia over time in a Malian town to highlight these malaria transmission dynamics. For a cohort of 300 rural children followed over 2009-2014, periodicity and phase shift between malaria and rainfall were determined by spectral analysis...
October 30, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29141348/-molecular-epidemiology-and-transmission-of-hiv-1-infection-in-zhejiang-province-2015
#11
J Z Yang, W J Chen, W J Zhang, L He, J F Zhang, X H Pan
Objective: To understand the distribution of HIV-1 subtype diversity and its transmission characteristics in Zhejiang province. Methods: A total of 302 newly diagnosed HIV-1 positive patients were selected through stratified random sampling in Zhejiang in 2015. HIV-1 pol genes were sequenced successfully with reverse transcription PCR/nested PCR and phylogenetic analysis was conducted for 276 patients. Then a molecular epidemiologic study was performed combined with field epidemiological investigation. Results: Of 276 sequence samples analyzed, 122 CRF07_BC strains (44...
November 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/29136281/genetic-prediction-of-type-2-diabetes-using-deep-neural-network
#12
J Kim, J Kim, M J Kwak, M Bajaj
Type 2 diabetes (T2DM) has strong heritability but genetic models to explain heritability have been challenging. We tested deep neural network (DNN) to predict T2DM using the nested case-control study of Nurses' Health Study (3,326 females, 45.6% T2DM) and Health Professionals Follow-up Study (2,502 males, 46.5% T2DM). We selected 96, 214, 399, and 678 SNPs through Fisher's exact test and L1-penalized logistic regression. We split each dataset randomly in 4:1 to train prediction models and test their performance...
November 14, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/29135923/the-association-between-serum-25-oh-d-status-and-blood-pressure-in-participants-of-a-community-based-program-taking-vitamin-d-supplements
#13
Naghmeh Mirhosseini, Hassanali Vatanparast, Samantha M Kimball
BACKGROUND: Vitamin D deficiency is a risk factor for hypertension. METHODS: We assessed 8155 participants in a community-based program to investigate the association between serum 25-hydroxyvitamin D (25(OH)D) status and blood pressure (BP) and the influence of vitamin D supplementation on hypertension. Participants were provided vitamin D supplements to reach a target serum 25(OH)D > 100 nmol/L. A nested case-control study was conducted to examine the effect of achieving physiological vitamin D status in those who were hypertensive and not taking BP-lowering medication, and hypertensive participants that initiated BP-lowering medication after program entry...
November 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29135288/selective-debridement-with-labral-preservation-using-narrow-indications-in-the-hip-minimum-5-year-outcomes-with-a-matched-pair-labral-repair-control-group
#14
Austin W Chen, Leslie C Yuen, Victor Ortiz-Declet, Jody Litrenta, David R Maldonado, Benjamin G Domb
BACKGROUND: Arthroscopic labral debridement in the hip can be an effective treatment for labral tears but has demonstrated inferior outcomes compared with labral repair. Thus, the role for labral debridement has become unclear. Hypothesis/Purpose: The purpose was to evaluate the outcomes of a selective debridement with labral preservation (SDLP) group with a minimum 5-year follow-up. It was hypothesized that, with narrow indications, SDLP would produce statistically improved patient-reported outcome (PRO) scores, comparable with those of a matched-pair labral repair control group...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29133776/tacrolimus-levels-are-not-associated-with-risk-of-malignancy-in-lung-transplant-recipients
#15
Benjamin Daniel Fox, Fadi Ashquar, Yael Raviv, Dror Rozengarten, Osnat Straichman, Shimon Izhakian, Mordechai Reuven Kramer
BACKGROUND Lung transplant (LTx) recipients suffer from high rates of malignancy. Exposure to immunosuppressive medication such as tacrolimus has been proposed as a risk factor for tumorigenesis. We hypothesized that chronically high levels of tacrolimus would be associated with risk of malignancy. MATERIAL AND METHODS The study was performed in a transplant center in Israel, with a nested case-control design. Cases were LTx recipients who were diagnosed with any solid or hematological malignancy except non-melanoma skin cancer...
November 14, 2017: Annals of Transplantation: Quarterly of the Polish Transplantation Society
https://www.readbyqxmd.com/read/29133701/prevalence-burden-and-risk-factors-of-migraine-a-community-based-study-from-eastern-india
#16
Biman K Ray, Neelanjana Paul, Avijit Hazra, Sujata Das, Malay K Ghosal, Amar K Misra, Tapas K Banerjee, Arijit Chaudhuri, Shyamal K Das
BACKGROUND: Headache is common in communities; however, epidemiological research regarding its prevalence is infrequent in India. AIM: We planned to study the prevalence of migraine, its disease burden, and the associated risk factors. SETTING AND DESIGN: This is an urban community study conducted in Kolkata with a cross-sectional and nested case-control design. MATERIALS AND METHODS: The criteria to study headache among a representative sample (aged 20-50 years) was based on the International Classification of Headache Disorders-II...
November 2017: Neurology India
https://www.readbyqxmd.com/read/29133597/occupational-exposure-to-asbestos-and-risk-of-cholangiocarcinoma-a-population-based-case-control-study-in-four-nordic-countries
#17
Andrea Farioli, Kurt Straif, Giovanni Brandi, Stefania Curti, Kristina Kjaerheim, Jan Ivar Martinsen, Pär Sparen, Laufey Tryggvadottir, Elisabete Weiderpass, Guido Biasco, Francesco Saverio Violante, Stefano Mattioli, Eero Pukkala
OBJECTIVES: To assess the association between occupational exposure to asbestos and the risk of cholangiocarcinoma (CC). METHODS: We conducted a case-control study nested in the Nordic Occupational Cancer (NOCCA) cohort. We studied 1458 intrahepatic CC (ICC) and 3972 extrahepatic CC (ECC) cases occurring among subjects born in 1920 or later in Finland, Iceland, Norway and Sweden. Each case was individually matched by birth year, gender and country to five population controls...
November 13, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29133489/continuity-of-primary-care-and-emergency-hospital-admissions-among-older-patients-in-england
#18
Peter Tammes, Sarah Purdy, Chris Salisbury, Fiona MacKichan, Daniel Lasserson, Richard W Morris
PURPOSE: Secondary health care services have been under considerable pressure in England as attendance rates increase, resulting in longer waiting times and greater demands on staff. This study's aim was to examine the association between continuity of care and risk of emergency hospital admission among older adults. METHODS: We analyzed records from 10,000 patients aged 65 years and older in 2012 within 297 English general practices obtained from the Clinical Practice Research Datalink and linked with Hospital Episode Statistics...
November 2017: Annals of Family Medicine
https://www.readbyqxmd.com/read/29133069/relaxin-2-connecting-peptide-pro-rlx2-levels-in-second-trimester-serum-samples-to-predict-preeclampsia
#19
Miriam Rehfeldt, Elizabeth Eklund, Joachim Struck, Andrea Sparwasser, Barbara O'Brien, Glenn E Palomaki, Josef Köhrle, Andreas Bergmann, Geralyn Lambert-Messerlian
OBJECTIVES: Preeclampsia is a serious complication of pregnancy, threatening fetal and maternal health. The aim of our study is to examine the association between preeclampsia and the connecting peptide of the pregnancy hormone relaxin (pro-RLX2) as a potential new biochemical marker. STUDY DESIGN: This is a nested case/control study derived from the cohort of pregnancies delivering at Women & Infants Hospital. Cases were identified at a clinic or by hospital codes, and individually confirmed by record review...
November 7, 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/29132057/predictors-of-hemodynamic-derangement-during-intubation-in-the-critically-ill-a-nested-case-control-study-of-hemodynamic-management-part-ii
#20
Nathan J Smischney, Mohamed O Seisa, Katherine J Heise, Robert A Wiegand, Kyle D Busack, Jillian L Deangelis, Theodore O Loftsgard, Darrell R Schroeder, Daniel A Diedrich
PURPOSE: Our primary aim was to identify predictors of immediate hemodynamic decompensation during the peri-intubation period. METHODS: We conducted a nested case-control study of a previously identified cohort of adult patients needing intubation admitted to a medical-surgical ICU during 2013-2014. Hemodynamic derangement was defined as cardiac arrest and/or the development of systolic blood pressure <90mmHg and/or mean arterial pressure <65mmHg 30min following intubation...
October 16, 2017: Journal of Critical Care
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