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Nested case-control study

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https://www.readbyqxmd.com/read/28228662/risk-of-gynecomastia-and-breast-cancer-associated-with-the-use-of-5-alpha-reductase-inhibitors-for-benign-prostatic-hyperplasia
#1
Katrina Wilcox Hagberg, Hozefa A Divan, Shona C Fang, J Curtis Nickel, Susan S Jick
BACKGROUND: Clinical trial results suggest that 5-alpha reductase inhibitors (5ARIs) for the treatment of benign prostatic hyperplasia (BPH) may increase the risk of gynecomastia and male breast cancer, but epidemiological studies have been limited. PATIENTS AND METHODS: We conducted a cohort study with nested case-control analyses using the UK Clinical Practice Research Datalink. We identified men diagnosed with BPH who were free from Klinefelter syndrome, prostate, genital or urinary cancer, prostatectomy or orchiectomy, or evidence of gynecomastia or breast cancer...
2017: Clinical Epidemiology
https://www.readbyqxmd.com/read/28225820/analysis-of-spatial-mobility-in-subjects-from-a-dengue-endemic-urban-locality-in-morelos-state-mexico
#2
Jorge Abelardo Falcón-Lezama, René Santos-Luna, Susana Román-Pérez, Ruth Aralí Martínez-Vega, Marco Arieli Herrera-Valdez, Ángel Fernando Kuri-Morales, Ben Adams, Pablo Antonio Kuri-Morales, Malaquías López-Cervantes, José Ramos-Castañeda
INTRODUCTION: Mathematical models and field data suggest that human mobility is an important driver for Dengue virus transmission. Nonetheless little is known on this matter due the lack of instruments for precise mobility quantification and study design difficulties. MATERIALS AND METHODS: We carried out a cohort-nested, case-control study with 126 individuals (42 cases, 42 intradomestic controls and 42 population controls) with the goal of describing human mobility patterns of recently Dengue virus-infected subjects, and comparing them with those of non-infected subjects living in an urban endemic locality...
2017: PloS One
https://www.readbyqxmd.com/read/28225314/the-prevalence-of-colonic-polyps-in-patients-with-acromegaly-a-case-control-nested-in-a-cohort-colonoscopic-study
#3
Baldomero Gonzalez, Guadalupe Vargas, Victoria Mendoza, Mariana Nava, Moisés Rojas, Moisés Mercado
BACKGROUND: Acromegaly is associated with an increased risk of colonic polyps. The magnitude of such risk is controversial and the characteristics that distinguish patients who develop polyps from those who do not are not well established. OBJECTIVE: To determine the prevalence of colonic polyps upon the diagnosis of acromegaly. To compare the clinical and biochemical features of patients with and without polyps Patients and methods: Out of 165 patients who underwent a full colonoscopy upon diagnosis of acromegaly, 53 were found to harbor colonic lesions (cases), whereas the remaining 112 conformed the group of controls...
February 22, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28223146/identification-of-a-novel-cosavirus-species-in-feces-of-children-and-its-relationship-with-acute-gastroenteritis-in-china
#4
Jie-Mei Yu, Yuan-Yun Ao, Li-Li Li, Zhao-Jun Duan
OBJECTIVES: To assess the prevalence of human cosavirus (HCosV) in China and to determine the association of a novel HCosV (Cosa-CHN) with acute gastroenteritis (AGE) . METHODS: A case-control study with 461 paired stool samples from diarrhea and healthy children was conducted. Real-time PCR and nested PCR were used to detect the HCosVs. Rapid-amplification of cDNA ends was employed to obtain the ends of the Cosa-CHN. RESULTS: Known HCosVs were detected in two control samples, while Cosa-CHN was detected in eight (1...
February 18, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28220196/the-associations-between-serum-25-hydroxyvitamin-d-level-and-the-risk-of-total-fracture-and-hip-fracture
#5
Y Feng, G Cheng, H Wang, B Chen
: In this meta-analysis, we evaluated the association between serum 25-hydroxyvitamin D (25(OH) vitamin D) level and the risk of total fractures and hip fractures. Low serum 25(OH) vitamin D level is associated with an increased risk of total and hip fractures. INTRODUCTION: Data on the association between serum 25(OH) vitamin D level and the risk of fractures are conflicting. This study aimed to provide a summary of prospective cohort or nested case-control studies on the association between serum 25(OH) vitamin D level and the risk of total fractures and hip fractures...
February 20, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28219963/overdose-risk-in-young-children-of-women-prescribed-opioids
#6
Yaron Finkelstein, Erin M Macdonald, Alejandro Gonzalez, Marco L A Sivilotti, Muhammad M Mamdani, David N Juurlink
BACKGROUND AND OBJECTIVE: Over the past 20 years, the prescribing of opioids has increased dramatically in North America, with parallel increases in opioid addiction, overdose, and associated deaths. We examined whether young children of women prescribed opioids were at increased risk of opioid overdose. METHODS: We conducted a population-based, nested case control study in Ontario, Canada, between 2002 and 2015. We identified children aged ≤10 years, whose mothers received publicly funded prescriptions for an opioid or a nonsteroidal antiinflammatory drug (comparator analgesic) in the preceding year...
February 20, 2017: Pediatrics
https://www.readbyqxmd.com/read/28216350/application-of-color-coded-quantitative-digital-subtraction-angiography-in-predicting-the-outcomes-of-immediate-type-i-and-type-iii-endoleaks
#7
Min Zhou, Zijie Su, Zhenyu Shi, Weiguo Fu, Xiangdong Meng, Yonggang Wang, Baolei Guo, Kaiyi Huang
OBJECTIVE: Immediate type I and type III endoleaks after endovascular aneurysm repair (EVAR) could be persistent or temporary. Reintervention is necessary for persistent ones. Color-coded quantitative digital subtraction angiography (CQDSA) could provide a quantitative evaluation of the endoleak hemodynamics. We aimed to use CQDSA to quantify immediate type I and type III endoleaks after EVAR and to find a practical way to predict their outcomes. METHODS: Between January 2012 and December 2014, 485 consecutive patients with abdominal aortic aneurysms underwent EVAR at our institution...
February 16, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28216194/safety-of-resuming-biologic-dmards-in-patients-who-develop-tuberculosis-after-anti-tnf-treatment
#8
Soo-Kyung Cho, Dam Kim, Soyoung Won, Minkyung Han, Jiyoung Lee, Eun Jin Jang, Tae-Hyung Kim, Sang-Cheol Bae, Yoon-Kyoung Sung
OBJECTIVES: To estimate the incidence of tuberculosis (TB) in rheumatoid arthritis (RA) patients treated with tumor necrotizing factor inhibitor (TNFI) and evaluate the safety of resuming biologic disease-modifying anti-rheumatic drugs (DMARDs) in patients who developed TB after anti-TNF treatment. METHODS: We conducted an inception cohort study of RA patients in the Korean Healthcare Claims Database who started TNFI as the first biologic DMARD between January 2009 and December 2013...
January 18, 2017: Seminars in Arthritis and Rheumatism
https://www.readbyqxmd.com/read/28207749/determinants-of-first-trimester-attendance-at-antenatal-care-clinics-in-the-amazon-region-of-peru-a-case-control-study
#9
Nora Moore, Brittany Blouin, Hugo Razuri, Martin Casapia, Theresa W Gyorkos
OBJECTIVE: To identify determinants which influence the timing of the first antenatal care (ANC) visit in pregnant women. DESIGN: Retrospective matched nested case-control study. SETTING: Two health centres, Belén and 6 de Octubre, in the Peruvian Amazon. POPULATION: All pregnant women who had attended ANC during the years 2010, 2011, and 2012. METHODS: All cases (819 women initiating ANC in their first trimester) were selected from ANC registries from 2010 to 2012...
2017: PloS One
https://www.readbyqxmd.com/read/28205047/pre-diagnosis-insulin-like-growth-factor-i-and-risk-of-epithelial-invasive-ovarian-cancer-by-histological-subtypes-a-collaborative-re-analysis-from-the-ovarian-cancer-cohort-consortium
#10
Jennifer Ose, Helena Schock, Elizabeth M Poole, Matti Lehtinen, Kala Visvanathan, Kathy Helzlsouer, Julie E Buring, I-Min Lee, Anne Tjønneland, Marie-Christine Boutron-Ruault, Antonia Trichopoulou, Amalia Mattiello, N Charlotte Onland-Moret, Elisabete Weiderpass, María-José Sánchez, Annika Idahl, Ruth C Travis, Sabina Rinaldi, Melissa A Merritt, Nicolas Wentzensen, Shelley S Tworoger, Rudolf Kaaks, Renée T Fortner
PURPOSE: Biologic evidence suggests that the Insulin-like growth factor (IGF)-family may be involved in the etiology of epithelial invasive ovarian cancer (EOC). However, prospective studies investigating the role of IGF-I in ovarian carcinogenesis have yielded conflicting results. METHODS: We pooled and harmonized data from 6 case-control studies nested within the Ovarian Cancer Cohort Consortium to investigate the association between pre-diagnosis IGF-I concentrations and subsequent risk of EOC...
February 16, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28202064/prediagnostic-plasma-concentrations-of-organochlorines-and-risk-of-b-cell-non-hodgkin-lymphoma-in-envirogenomarkers-a-nested-case-control-study
#11
Rachel S Kelly, Hannu Kiviranta, Ingvar A Bergdahl, Domenico Palli, Ann-Sofie Johansson, Maria Botsivali, Paolo Vineis, Roel Vermeulen, Soterios A Kyrtopoulos, Marc Chadeau-Hyam
BACKGROUND: Evidence suggests a largely environmental component to non-Hodgkin's lymphoma (NHL). Persistent organic pollutants (POPs) including polychlorinated biphenyls (PCBs), DDE and HCB have been repeatedly implicated, but the literature is inconsistent and a causal relationship remains to be determined. METHODS: The EnviroGenoMarkers study is nested within two prospective cohorts EPIC-Italy and the Northern Sweden Health and Disease Study. Six PCB congeners, DDE and HCB were measured in blood plasma samples provided at recruitment using gas-chromatography mass spectrometry...
February 16, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28199450/association-between-smoking-status-preoperative-exhaled-carbon-monoxide-levels-and-postoperative-surgical-site-infection-in-patients-undergoing-elective-surgery
#12
Margaret B Nolan, David P Martin, Rodney Thompson, Darrell R Schroeder, Andrew C Hanson, David O Warner
Importance: Cigarette smoking is a risk factor for many perioperative complications, including surgical site infection (SSI). The duration of abstinence from smoking required to reduce this risk is unknown. Objectives: To evaluate if abstinence from smoking on the day of surgery is associated with a decreased frequency of SSI in patients who smoke cigarettes and to confirm that smoking is significantly independently associated with SSI when adjustment is made for potentially relevant covariates, such as body mass index...
February 15, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28198577/serum-carotenoid-and-tocopherol-concentrations-and-risk-of-asthma-in-childhood-a-nested-case-control-study
#13
Niina Hӓmӓlӓinen, Bright I Nwaru, Iris Erlund, Hanna-Mari Takkinen, Suvi Ahonen, Jorma Toppari, Jorma Ilonen, Riitta Veijola, Mikael Knip, Minna Kaila, Suvi M Virtanen
BACKGROUND: The antioxidant hypothesis regarding the risk of asthma in childhood has resulted in inconsistent findings. Some data indicate that the role of antioxidants in childhood asthma risk may have a critical time window of effect, but only a well-designed longitudinal cohort study can clarify this hypothesis. OBJECTIVE: To study the longitudinal associations between serum carotenoid and tocopherol concentrations during the first 4 years of life and asthma risk by the age of 5 years...
February 15, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28194654/the-risk-of-ischemic-cardio-and-cerebrovascular-events-associated-with-oxycodone-naloxone-and-other-extended-release-high-potency-opioids-a-nested-case-control-study
#14
Kathrin Jobski, Bianca Kollhorst, Edeltraut Garbe, Tania Schink
INTRODUCTION: In Germany, an extended-release (ER) combination of the high-potency opioid (HPO) oxycodone and the antagonist naloxone was approved in 2006. In recent years, the cardio- and cerebrovascular safety of opioid antagonists and of opioids themselves has been discussed. OBJECTIVES: The objective of this study was to estimate the risk of major ischemic cardio- and cerebrovascular events in patients receiving ER oxycodone-naloxone compared with those receiving other ER HPOs...
February 13, 2017: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/28187503/beneficial-and-harmful-effects-of-non-selective-beta-blockade-on-acute-kidney-injury-in-liver-transplant-candidates
#15
Sang Gyune Kim, Joseph J Larson, Ji Sung Lee, Therneau M Terry, W Ray Kim
Non-selective beta-blockers have played an important role in the prevention of portal hypertensive bleeding in cirrhotic patients. However, recent studies have suggested that non-selective beta-blockers may be harmful in some patients with end-stage liver disease. To evaluate the association between use of non-selective beta-blocker and the incidence of acute kidney injury (AKI). We conducted a nested case-control study in a cohort of liver transplant waitlist registrants. Each patient with AKI was matched to a control by the model for end-stage liver disease (MELD)-Na score, age, serum creatinine, and follow-up duration...
February 10, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/28182660/first-trimester-screening-of-circulating-c19mc-micrornas-and-the-evaluation-of-their-potential-to-predict-the-onset-of-preeclampsia-and-iugr
#16
Ilona Hromadnikova, Katerina Kotlabova, Katarina Ivankova, Ladislav Krofta
OBJECTIVES: A nested case control study of a longitudinal cohort comparing pregnant women enrolled at 10 to 13 gestational weeks was carried out to evaluate risk assessment for preeclampsia and IUGR based on circulating placental specific C19MC microRNAs in early pregnancy. METHODS: The expression of placental specific C19MC microRNAs (miR-516b-5p, miR-517-5p, miR-518b, miR-520a-5p, miR-520h, and miR-525-5p) was determined in plasma samples from pregnancies that subsequently developed preeclampsia (n = 21), IUGR (n = 18), and 58 normal pregnancies using real-time PCR and comparative Ct method relative to synthetic Caenorhabditis elegans microRNA (cel-miR-39)...
2017: PloS One
https://www.readbyqxmd.com/read/28181356/cd40-polymorphism-in-cervical-carcinoma-in-a-subset-of-malaysian-population
#17
Purushotham Krishnappa, Hong Mun Kong, Ibtisam Binti Mohamad, Kenny Voon, Sushela Devi Somanath
AIM: The aim of this study was to determine the allelic frequency of single nucleotide polymorphisms (SNPs) in the human CD40 gene in cervical cancer. METHODS: A total of 200 cases were selected from the records of the Department of Pathology, Hospital Tuanku Jaafar, Seremban, Malaysia. The samples were collected in three separate groups: cervicitis (n = 61), cervical intraepithelial neoplasia (n = 69), and cervical carcinoma (n = 70). The patients' demographic data and the respective paraffin-embedded tissue samples from Hospital Tuanku Jaafar, Seremban were obtained upon consent...
February 8, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28179491/increases-in-plasma-tryptophan-are-inversely-associated-with-incident-cardiovascular-disease-in-the-prevenci%C3%A3-n-con-dieta-mediterr%C3%A3-nea-predimed-study
#18
Edward Yu, Miguel Ruiz-Canela, Marta Guasch-Ferré, Yan Zheng, Estefania Toledo, Clary B Clish, Jordi Salas-Salvadó, Liming Liang, Dong D Wang, Dolores Corella, Montse Fitó, Enrique Gómez-Gracia, José Lapetra, Ramón Estruch, Emilio Ros, Montserrat Cofán, Fernando Arós, Dora Romaguera, Lluis Serra-Majem, Jose V Sorlí, Frank B Hu, Miguel A Martinez-Gonzalez
Background: During development of cardiovascular disease (CVD), interferon-γ-mediated inflammation accelerates degradation of tryptophan into downstream metabolites. A Mediterranean diet (MedDiet) consisting of a high intake of extra-virgin olive oil (EVOO), nuts, fruits, vegetables, and cereals has been demonstrated to lower the risk of CVD. The longitudinal relation between tryptophan and its downstream metabolites and CVD in the context of a MedDiet is unstudied.Objective: We sought to investigate the relation between metabolites in the tryptophan-kynurenine pathway and CVD in the context of a MedDiet pattern...
February 8, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28179311/telomere-length-and-risk-of-hepatocellular-carcinoma-a-nested-case-control-study-in-taiwan-cancer-screening-program-cohort
#19
Hui Zeng, Hui-Chen Wu, Qiao Wang, Hwai-I Yang, Chien-Jen Chen, Regina M Santella, Jing Shen
BACKGROUND: Telomere length (TL) measured in peripheral blood leucocytes (PBL) might be a useful biomarker to identify elevated cancer risk. PATIENTS AND METHODS: A case-control study which included 268 newly-diagnosed HCC cases and 536 matched controls, was conducted. Absolute TL in PBL was analyzed by quantitative real-time PCR. RESULTS: The overall median length of TL was not statistically shorter in HCC cases compared to healthy controls...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28178951/high-sensitive-c-reactive-protein-and-risk-of-incident-type-2-diabetes-a-case-control-study-nested-within-the-singapore-chinese-health-study
#20
An Pan, Yeli Wang, Jian-Min Yuan, Woon-Puay Koh
BACKGROUND: The liver-derived C-reactive protein (CRP) is a sensitive and systemic biomarker of inflammation, and has been associated with increased risk of developing type 2 diabetes in populations other than Chinese. Therefore, we prospectively examined the relation between plasma levels of CRP and risk of type 2 diabetes (T2D) among a Chinese population. METHODS: Plasma high-sensitive CRP (hs-CRP) concentrations were assayed among 571 T2D cases and 571 controls nested in the prospective cohort of the Singapore Chinese Health Study...
February 8, 2017: BMC Endocrine Disorders
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