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Nested case-control study

Britton Trabert, Ronald C Eldridge, Ruth M Pfeiffer, Meredith S Shiels, Troy J Kemp, Chantal Guillemette, Patricia Hartge, Mark E Sherman, Louise A Brinton, Amanda Black, Anil K Chaturvedi, Allan Hildesheim, Sonja I Berndt, Mahboobeh Safaeian, Ligia Pinto, Nicolas Wentzensen
Inflammation is proposed to increase risk of developing endometrial cancer, but few prospective epidemiologic studies have investigated the relationship between circulating inflammation markers and endometrial cancer risk. In a nested case-control study within the PLCO Screening Trial we measured serum levels of 64 inflammation-related biomarkers in 284 incident endometrial cancer cases and 284 matched controls. Using multivariable logistic regression inflammation markers were evaluated individually and combined into a cross-validated inflammation score...
October 22, 2016: International Journal of Cancer. Journal International du Cancer
Elli Toivonen, Outi Palomäki, Heini Huhtala, Jukka Uotila
BACKGROUND: The safety of vaginal breech delivery has been debated for decades. Although it has been shown to predispose infants to immediate depression, several observational studies have also shown that attempting vaginal breech delivery does not increase perinatal morbidity or low Apgar score at the age of five minutes. Cardiotocography monitoring is recommended during vaginal breech delivery, but comparative data describing differences between cardiotocography tracings in breech and vertex deliveries is scarce...
October 21, 2016: BMC Pregnancy and Childbirth
Derek Richards
Data sourcesPubMed Central, CINAHL, Embase and reference lists of identified articles.Study selectionObservational and experimental studies published in English where breastfeeding was the exposure and development of caries was the outcome of interest were considered. Two reviewers independently selected studies for inclusionData extraction and synthesisStudy quality was assessed independently by two researchers using the Newcastle Ottawa Scale (NOS). Key data items, exposure and outcome definitions and effect estimates (odds ratios (OR), relative risks, prevalence ratios) with 95% Confidence Interval (95%CI) were abstracted where available for inclusion in a meta-analysis...
September 2016: Evidence-based Dentistry
Jennifer L Kuntz, Jennifer M Baker, Patricia Kipnis, Sherian Xu Li, Vincent Liu, Yang Xie, Stephen Marcella, Gabriel J Escobar
BACKGROUND Considerable efforts have been dedicated to developing strategies to prevent and treat recurrent Clostridium difficile infection (rCDI); however, evidence of the impact of rCDI on patient healthcare utilization and outcomes is limited. OBJECTIVE To compare healthcare utilization and 1-year mortality among adults who had rCDI, nonrecurrent CDI, or no CDI. METHODS We performed a nested case-control study among adult Kaiser Foundation Health Plan members from September 1, 2001, through December 31, 2013...
October 20, 2016: Infection Control and Hospital Epidemiology
N Sawada, M Inoue, M Iwasaki, T Yamaji, T Shimazu, S Sasazuki, S Tsugane
BACKGROUND/OBJECTIVES: Although vitamin D has been experimentally reported to inhibit tumorigenesis, cell growth and prostate cancer invasion, epidemiologic data regarding prostate cancer risk are inconsistent, and some studies have suggested positive but nonsignificant associations. Further, the impact of vitamin D on prostate cancer between Western and Japanese populations may differ due to different plasma vitamin D levels. SUBJECTS/METHODS: We performed a nested case-control study within the Japan Public Health Center-based Prospective (JPHC) Study in 14,203 men (40-69 years) who answered a self-administered questionnaire at baseline (1990-1994) and gave blood samples, and were followed until 2005...
October 19, 2016: European Journal of Clinical Nutrition
Rakesh Malhotra, Kerri L Cavanaugh, William J Blot, T Alp Ikizler, Loren Lipworth, Edmond K Kabagambe
BACKGROUND: Whether polyunsaturated fatty acids (PUFA) are associated with end-stage renal disease (ESRD) in populations with a high burden of risk factors for kidney disease is unknown. We sought to determine whether PUFA intake is associated with ESRD. METHODS: We conducted a nested case-control study of ESRD within the Southern Community Cohort Study (SCCS), a prospective cohort of low-income blacks and whites in the southeastern US (2002-2009). Through 2012, 1,074 incident ESRD cases were identified by linkage with the United States Renal Data System and matched to 3,230 controls by age, sex and race...
October 18, 2016: BMC Nephrology
Ricky-John Spencer, James U Van Dyke, Michael B Thompson
Ecological traps are threats to organisms, and exist in a range of biological systems. A subset of ecological trap theory is the "ethological trap," whereby behaviors canalized by past natural selection become traps when environments change rapidly. Invasive predators are major threats to imperiled species and their ability to exploit canalized behaviors of naive prey is particularly important for the establishment of the predator and the decline of the native prey. Our study uses ecological theory to demonstrate that invasive predator controls require shifts in management priorities...
October 2016: Ecological Applications: a Publication of the Ecological Society of America
Tanmay Mahapatra, Kaushik Chakraborty, Sanchita Mahapatra, Umakanta Mahapatra, Naren Pandey, Peter L Thomson, Arthur W Musk, Ramendra N Mitra
BACKGROUND: Progressive burden of diabetes mellitus is a major concern in India. Data on the predictors of poor glycemic control among diabetics are scanty. A population-based cross-sectional study nested in an urban cohort was thus conducted in West Bengal, India to determine the burden and correlates of total and uncontrolled abnormalities in glucose metabolism (AGM) in a representative population. METHODS: From 9046 adult cohort-members, 269 randomly selected consenting subjects (non-response = 7...
2016: PloS One
Davoud Kazemi-Saleh, Pooya Koosha, Masoumeh Sadeghi, Nizal Sarrafzadegan, Reza Karbasi-Afshar, Mansoureh Boshtam, Shahram Oveis-Gharan
BACKGROUND: Numerous studies have been conducted on the predictive effects of high-sensitivity C-reactive protein (hs-CRP) on cardiovascular events. Few studies have been conducted to investigate the effects of adiponectin for the prediction of the incident of cardiovascular events in the Middle East area. This study compared the predictive effect of hs-CRP and adiponectin on healthy volunteers for the prediction of cerebrovascular disease (CVD). METHODS: This nested case-control in original Isfahan Cohort Study (ICS) was conducted from 2001 to 2011...
May 2016: ARYA Atherosclerosis
Inna E Tchivileva, Richard Ohrbach, Roger B Fillingim, Joel D Greenspan, William Maixner, Gary D Slade
While cross-sectional studies have demonstrated an association between headache and temporomandibular disorder (TMD), whether headache can predict the onset of TMD is unknown. The aims of this study were to evaluate contribution of headache to the risk of developing TMD and describe patterns of change in headache types over time. An initially TMD-free cohort of 2,410 persons with low frequency of headache completed quarterly questionnaires assessing TMD and headache symptoms over a median 3.0-year follow-up period...
September 29, 2016: Pain
Birju A Shah, Alison Migliori, Itsuka Kurihara, Surendra Sharma, Yow-Pin Lim, James Padbury
OBJECTIVE: To examine circulating levels of inter-alpha inhibitor protein (IaIp) in infants with necrotizing enterocolitis (NEC), spontaneous intestinal perforation (SIP), and matched controls to assess the diagnostic accuracy of IaIp to differentiate NEC from SIP and to compare receiver operating characteristics of IaIp for NEC with C-reactive protein (CRP). STUDY DESIGN: A prospective, nested case-control study of infants with feeding intolerance was carried out...
October 10, 2016: Journal of Pediatrics
Hsiu-Chiung Lee, Wei-Che Chiu, Tsu-Nai Wang, Yin-To Liao, I-Chia Chien, Yena Lee, Roger S McIntyre, Pau-Chung Chen, Vincent Chin-Hung Chen
BACKGROUND: Experimental evidence indicates that serotonin is associated with both proliferative and pro-carcinogenic effects on colorectal tumors. The present study aims to investigate the associations between antidepressant use and colorectal cancer in an epidemiological sample. METHODS: We conducted a population-based case-control study utilizing Taiwan's National Health Insurance Research Database (NHIRD). We identified 49,342 cases with colorectal cancer and 240,985 controls between 1997 and 2008...
October 1, 2016: Journal of Affective Disorders
Roshan Chudal, Andre Sourander, Heljä-Marja Surcel, Dan Sucksdorff, Susanna Hinkka-Yli-Salomäki, Alan S Brown
OBJECTIVES: C-reactive protein (CRP) is a well-established general marker of inflammation from both infectious and noninfectious exposures. Previous studies have shown that maternal CRP is associated with an increased risk of autism and schizophrenia. The aim of this study was to examine the association between early to mid-gestational serum CRP levels, prospectively assayed in maternal sera, and the risk of bipolar disorder (BPD). METHODS: This study is derived from the Finnish Prenatal Study of Bipolar Disorder (FIPS-B), based on a nested case-control study design...
October 11, 2016: Journal of Affective Disorders
Tinashe Chikowore, Tertia van Zyl, Edith J M Feskens, Karin R Conradie
AIMS: To determine the predictive utility of polygenic risk scores of common variants associated with type 2 diabetes derived from the European and Asian ethnicities among a black South African population. METHOD: Our study was a case-control study nested within the Prospective Urban and Rural Epidemiological (PURE) study of 178 male and female cases, matched for age and gender with 178 controls. Four types of genetic risk scores (GRS) were developed from 66 selected SNPs...
October 1, 2016: Diabetes Research and Clinical Practice
Cristina Calvo, Isabel Aguado, María Luz García-García, Esther Ruiz-Chercoles, Eloisa Díaz-Martinez, Rosa María Albañil, Olga Campelo, Antonio Olivas, Luisa Muñóz-Gonzalez, Francisco Pozo, Rosa Fernandez-Arroyo, Adelaida Fernandez-Rincón, Ana Calderon, Inmaculada Casas
INTRODUCTION: It is known that infants with viral respiratory infections severe enough to require hospital admission have a high risk of developing recurrent wheezing. Few data have been published on unselected populations. The main aim of this study was to analyse symptomatic and asymptomatic respiratory viral infections during the first year of life in a cohort of infants, recruited at birth, and the development of recurrent wheezing. PATIENTS AND METHODS: A total of 302 newborns were recruited...
October 13, 2016: Anales de Pediatría: Publicación Oficial de la Asociación Española de Pediatría (A.E.P.)
Xiaozhou Fan, Alexander V Alekseyenko, Jing Wu, Brandilyn A Peters, Eric J Jacobs, Susan M Gapstur, Mark P Purdue, Christian C Abnet, Rachael Stolzenberg-Solomon, George Miller, Jacques Ravel, Richard B Hayes, Jiyoung Ahn
OBJECTIVE: A history of periodontal disease and the presence of circulating antibodies to selected oral pathogens have been associated with increased risk of pancreatic cancer; however, direct relationships of oral microbes with pancreatic cancer have not been evaluated in prospective studies. We examine the relationship of oral microbiota with subsequent risk of pancreatic cancer in a large nested case-control study. DESIGN: We selected 361 incident adenocarcinoma of pancreas and 371 matched controls from two prospective cohort studies, the American Cancer Society Cancer Prevention Study II and the National Cancer Institute Prostate, Lung, Colorectal and Ovarian Cancer Screening Trial...
October 14, 2016: Gut
Peter T Campbell, Christina C Newton, Neal D Freedman, Jill Koshiol, Michael C Alavanja, Laura E Beane Freeman, Julie E Buring, Andrew T Chan, Dawn Q Chong, Mridul Datta, Mia M Gaudet, J Michael Gaziano, Edward L Giovannucci, Barry I Graubard, Albert R Hollenbeck, Lindsey King, I-Min Lee, Martha S Linet, Julie R Palmer, Jessica L Petrick, Jenny N Poynter, Mark P Purdue, Kim Robien, Lynn Rosenberg, Vikrant V Sahasrabuddhe, Catherine Schairer, Howard D Sesso, Alice J Sigurdson, Victoria L Stevens, Jean Wactawski-Wende, Anne Zeleniuch-Jacquotte, Andrew G Renehan, Katherine A McGlynn
Incidence rates for liver cancer have increased 3-fold since the mid-1970s in the United States in parallel with increasing trends for obesity and type II diabetes mellitus. We conducted an analysis of baseline body mass index (BMI), waist circumference (WC), and type II diabetes mellitus with risk of liver cancer. The Liver Cancer Pooling Project maintains harmonized data from 1.57 million adults enrolled in 14 U.S.-based prospective studies. Cox regression estimated HRs and 95% confidence intervals (CI) adjusted for age, sex, study center, alcohol, smoking, race, and BMI (for WC and type II diabetes mellitus)...
October 15, 2016: Cancer Research
Houlin Tang, Zunyou Wu, Yurong Mao, Javier Cepeda, Jamie Morano
BACKGROUND: Antiretroviral therapy (ART) and condom use have been proven to reduce the risk of sexual transmission of human immunodeficiency virus (HIV) among HIV sero-different couples, but its full implementation remains a challenge. This study aims to assess HIV seroconversion rate of HIV-negative spouse and its associated risk factors among HIV sero-different couples in rural China. METHODS: An open cohort of HIV sero-different couples enrolled in 30 counties in China between October 1, 2010, and September 30, 2012, and followed-up to December 31, 2012, was constructed retrospectively...
2016: PloS One
Ye-Li Wang, Woon-Puay Koh, Jian-Min Yuan, An Pan
AIMS: To assess the association between liver enzymes and the risk of type 2 diabetes (T2D) in a Chinese population. METHODS: A nested case-control study comprising 571 T2D cases and 571 matched controls was conducted within the Singapore Chinese Health Study. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP), and lactate dehydrogenase (LDH) were quantified in baseline plasma collected from them, while γ-glutamyltransferase (GGT) was assayed among 255 T2D cases with baseline hemoglobin A1c <6...
2016: BMJ Open Diabetes Research & Care
Sanjeev Budhathoki, Taiki Yamaji, Motoki Iwasaki, Norie Sawada, Taichi Shimazu, Shizuka Sasazuki, Teruhiko Yoshida, Shoichiro Tsugane
Epidemiological and experimental evidence suggest that vitamin D is protective against the risk of colorectal cancer. Polymorphisms in the gene encoding vitamin D receptor (VDR), which mediates most of the known cellular effects of vitamin D, have been suggested to alter this association. Here, using a tag SNP approach, we comprehensively evaluated the role of common genetic variants in VDR and their interaction with plasma vitamin D levels in relation to colorectal cancer risk in Japanese populations. A total of 356 colorectal cancer cases and 709 matched control subjects were selected from the participants of the Japan Public Health Center-based Prospective Cohort Study...
2016: PloS One
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