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Poisson regression

Richard Conway, Sean Cournane, Declan Byrne, Deirdre O'Riordan, Seamus Coveney, Bernard Silke
BACKGROUND: Deprivation increases admission rates; the specific effect of deprivation with regard to weekend admissions is unknown. METHODS: We calculated annual weekend admission rates for each small area population unit and related these to quintiles of Deprivation Index from 2002-2014. Univariate and multivariable risk estimates were calculated using truncated Poisson regression. RESULTS: There were 30,794 weekend admissions in 16,665 patients...
2016: Acute Medicine
I-Shiang Tzeng, Su-Hsun Liu, Kuan-Fu Chen, Chin-Chieh Wu, Jih-Chang Chen
To reduce patient boarding time at the emergency department (ED) and to improve the overall quality of the emergent care system in Taiwan, the Minister of Health and Welfare of Taiwan (MOHW) piloted the Grading Responsible Hospitals for Acute Care (GRHAC) audit program in 2007-2009.The aim of the study was to evaluate the impact of the GRHAC audit program on the identification and management of acute myocardial infarction (AMI)-associated ED visits by describing and comparing the incidence of AMI-associated ED visits before (2003-2007), during (2007-2009), and after (2009-2012) the initial audit program implementation...
October 2016: Medicine (Baltimore)
Erja Forssas, Martti Arffman, Kristiina Manderbacka, Ilmo Keskimäki, Iiris Ruuth, Reijo Sund
OBJECTIVE: In this study, we examined trends in severe diabetes-related complications (acute myocardial infarction, stroke, lower extremity amputation, and end-stage renal disease) and prevalence of multiple complications in a total population with diabetes in Finland during an 18-year period. RESEARCH DESIGN AND METHODS: The total population with diabetes aged 30 years or older in 1994-2011 was obtained from several Finnish health registers. Only the first episode of each end point was included in the analysis...
2016: BMJ Open Diabetes Research & Care
Alberto Ferrari, Mario Comelli
BACKGROUND: In behavioral research, data consisting of a per-subject proportion of "successes" and "failures" over a finite number of trials often arise. This clustered binary data are usually non-normally distributed, which can distort inference if the usual general linear model is applied and sample size is small. A number of more advanced methods is available, but they are often technically challenging and a comparative assessment of their performances in behavioral setups has not been performed...
October 14, 2016: Journal of Neuroscience Methods
Katelyn G Bennett, John M Ingraham, Lisa F Schneider, Pierre B Saadeh, Christian J Vercler
BACKGROUND: The ethical practice of medicine has always been of utmost importance, and plastic surgery is no exception. The literature is devoid of information on the teaching of ethics and professionalism in plastic surgery. In light of this, a survey was sent to ascertain the status of ethics training in plastic surgery residencies. METHODS: A 21-question survey was sent from the American Council of Academic Plastic Surgeons meeting to 180 plastic surgery program directors and coordinators via email...
October 6, 2016: Annals of Plastic Surgery
Annelisa Silva E Alves de Carvalho Santos, Erika Aparecida Silveira, Marianne de Oliveira Falco
This study aimed to estimate the incidence of gastrointestinal symptoms (GIS) and associated factors in an outpatient cohort of people living with HIV/AIDS (PLWHA) followed between October 2009 and July 2011. We evaluated nausea and/or vomiting, dyspepsia, heartburn, diarrhea, constipation, and flatulence. The outcome variable was the presence of three or more GIS. Sociodemographic (sex, skin color, age, income, years of schooling), lifestyle (smoking status, alcohol consumption, physical activity level), clinical (antiretroviral therapy, time of HIV infection, CD4 lymphocyte count, viral load), and anthropometric (nutritional status and waist circumference) variables were investigated...
2016: PloS One
Andrea Streng, Veit Grote, Anita Rack-Hoch, Johannes G Liese
BACKGROUND: Universal varicella vaccination for one-year-old children was introduced in Germany in 2004. We investigated changes in incidence and type of varicella-associated neurologic complications in children during the first 7 years after universal vaccination recommendation. METHODS: Surveillance study based on patients <17 years of age with an International Classification of Diseases (10 Revision, ICD-10) discharge diagnosis of varicella, annually reported by 22-29 pediatric hospitals in Bavaria (Germany), 2005 to 2011...
October 3, 2016: Pediatric Infectious Disease Journal
David B Hanna, Molly Jung, Xiaonan Xue, Kathryn Anastos, Jennifer M Cocohoba, Mardge H Cohen, Elizabeth T Golub, Nancy A Hessol, Alexandra M Levine, Tracey E Wilson, Mary A Young, Robert C Kaplan
Cardiovascular disease (CVD) is increasingly common among women with HIV, but literature on nonlipid CVD risk factor management is lacking. We examined semiannual trends from 2006 to 2014 in hypertension treatment and control (blood pressure <140/90 mmHg), diabetes treatment and control (fasting glucose <130 mg/dL), and smoking quit rates in the Women's Interagency HIV Study. Unadjusted and adjusted Poisson regression models tested time trends and differences between HIV+ and HIV- women. Among antiretroviral therapy (ART) users, we examined the association of ART adherence and virologic suppression with each outcome...
October 2016: AIDS Patient Care and STDs
Enrique Regidor, Fernando Vallejo, José A Tapia Granados, Francisco J Viciana-Fernández, Luis de la Fuente, Gregorio Barrio
BACKGROUND: Studies of the effect of macroeconomic fluctuations on mortality in different socioeconomic groups are scarce and have yielded mixed findings. We analyse mortality trends in Spain before and during the Great Recession in different socioeconomic groups, quantifying the change within each group. METHODS: We did a nationwide prospective study, in which we took data from the 2001 Census. All people living in Spain on Nov 1, 2001, were followed up until Dec 31, 2011...
October 13, 2016: Lancet
Gongbo Chen, Wenyi Zhang, Shanshan Li, Yongming Zhang, Gail Williams, Rachel Huxley, Hongyan Ren, Wei Cao, Yuming Guo
BACKGROUND: There is good evidence that air pollution is a risk factor for adverse respiratory and vascular health outcomes. However, data are limited as to whether ambient fine particles contribute to the transmission of influenza and if so, how the association is modified by weather conditions. OBJECTIVES: We examined the relationship between ambient PM2.5 and influenza incidence at the national level in China and explored the associations at different temperatures...
October 10, 2016: Environment International
Subas Neupane, Freddie Bray, Anssi Auvinen
BACKGROUND: Macroeconomic indicators are likely associated with prostate cancer (PCa) incidence and mortality globally, but have rarely been assessed. METHODS: Data on PCa incidence in 2003-2007 for 49 countries with either nationwide cancer registry or at least two regional registries were obtained from Cancer Incidence in Five Continents Vol X and national PCa mortality for 2012 from GLOBOCAN 2012. We compared PCa incidence and mortality rates with various population-level indicators of health, economy and development in 2000...
October 15, 2016: World Journal of Urology
Hong Qiu, Shengzhi Sun, Robert Tang, King-Pan Chan, Linwei Tian
The growth of pathogens potentially relevant to respiratory tract infection may be triggered by changes in ambient temperature. Few studies have examined the association between ambient temperature and pneumonia incidence, and no studies have focused on the susceptible elderly population. We aimed to examine the short-term association between ambient temperature and geriatric pneumonia and to assess the disease burden attributable to cold and hot temperatures in Hong Kong, China. Daily time-series data on emergency hospital admissions for geriatric pneumonia, mean temperature, relative humidity, and air pollution concentrations between January 2005 and December 2012 were collected...
October 15, 2016: American Journal of Epidemiology
Daisuke Onozuka, Akihito Hagihara
BACKGROUND: Although several studies have estimated the effect of extreme temperatures on out-of-hospital cardiac arrest (OHCA) in a single city or region, few have investigated variations in this association on a national level in Japan. METHODS: Daily data on OHCAs and weather variations were obtained from the 47 prefectures of Japan between 2005 and 2014. A time-series Poisson regression model with a distributed lag non-linear model was used to estimate the prefecture-specific effects...
October 12, 2016: Science of the Total Environment
Dung Phung, Cordia Chu, Shannon Rutherford, Huong Lien Thi Nguyen, Cuong Manh Do, Cunrui Huang
The effects of heatwaves on morbidity in developing and tropical countries have not been well explored. The purpose of this study was to examine the relationship between heatwaves and hospitalization and the potential influence of socio-economic factors on this relationship in Vietnam. Generalized Linear Models (GLM) with Poisson family and Distributed Lag Models (DLM) were applied to evaluate the effect of heatwaves for each province (province-level effect). A random-effects meta-analysis was applied to calculate the pooled estimates (country-level effects) for 'all causes', infectious, cardiovascular, and respiratory admissions queried by lag days, regions, sex, and ages...
October 13, 2016: Environmental Pollution
Rémi Béranger, Ronan Garlantézec, Gaïd Le Maner-Idrissi, Agnès Lacroix, Florence Rouget, Jessica Trowbridge, Charline Warembourg, Christine Monfort, Florent Le Gléau, Marylène Jourdin, Luc Multigner, Sylvaine Cordier, Cécile Chevrier
BACKGROUND: Glycol ethers (GE) are widely used organic solvents. Despite the potential neurotoxicity of several families of organic solvents, little is known about the impact of GE on the neurodevelopment of infants and children. OBJECTIVES: We investigated the relation between urinary concentrations of GE metabolites in pregnant women and neurocognitive abilities in their 6-year-old children in the PELAGIE mother-child cohort. METHODS: Five GE metabolites were measured in first-void urine samples of 204 French pregnant women in early pregnancy (<19 weeks of gestation)...
October 14, 2016: Environmental Health Perspectives
Melissa Borelli, Rebecca J Baer, Christina D Chambers, Tyler C Smith, Laura L Jelliffe-Pawlowski
We examined the association between maternal characteristics, routinely collected first- and second-trimester biomarkers and the risk of having an infant with a critical congenital heart defect (CCHD). Included were women who participated in the California Prenatal Screening Program who had nuchal translucency (NT) measurement and first- and second-trimester serum screening. All pregnancies ended in a live birth of an infant without aneuploidy or a neural tube defect. Poisson regression analyses were used to estimate the relative risk and 95% confidence interval of a CCHD by maternal characteristics, first- and second-trimester serum biomarkers or NT measurements...
October 14, 2016: American Journal of Medical Genetics. Part A
Bernardo Antonio Agostini, Lisara Tosatto Pinto, Mariangélica Koehler, Bruno Emmanuelli, Chaiana Piovesan, Thiago Machado Ardenghi
The aim of this study was to assess trends in traumatic crown injuries (TCIs), their prevalence, and association with socioeconomic and clinical factors in preschool children over a 5-year period. A series of cross-sectional surveys was conducted in Santa Maria, Brazil, on children attending a National Day of Children's Vaccination. The same protocol was used in all surveys conducted in 2008, 2010, and 2013. Clinical examinations were performed to evaluate types of traumatic crown injuries using the O'brien index...
October 10, 2016: Brazilian Oral Research
Tania Mercedes López Martínez, Marília Leão Goettems, Marina Sousa Azevedo, Marcos Britto Correa, Flávio Fernando Demarco, Ana Regina Romano
The aim of this study was to assess the prevalence of black stains (BS) and factors associated with their occurrence and to investigate the association of BS with caries experience after adjusting for other risk indicators. A school-based, cross-sectional study using multistage sampling of children aged 10-12 years from 20 private and public schools in Pelotas/Southern Brazil was conducted (n = 706). Children were evaluated for BS and dental caries (DMFT/dmft index) and socioeconomic information was collected by questionnaire...
October 10, 2016: Brazilian Oral Research
Imelda K Moise, Marilyn O Ruiz
INTRODUCTION: Identifying at-risk groups is a challenge in post-disaster psychosocial response. Geospatial techniques can support the design and deployment of targeted and tailored interventions. This study compared spatial patterns in the distribution of hospitalizations for substance abuse disorders and associated area-level predictors before and after Hurricane Katrina in New Orleans, Louisiana. METHODS: We used hospital data from the Louisiana Department of Health and Hospitals for 2004 (pre-Katrina) and 2008 (post-Katrina)...
October 13, 2016: Preventing Chronic Disease
C Treff, I M Benseñor, P A Lotufo
This study investigates the association between leisure-time physical activity and commuting-related physical activity and high blood pressure among participants in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil). Physical activity was assessed through application of the International Physical Activity Questionnaire, particularly the domains addressing leisure and transportation. We used the World Health Organization's definition (⩾150 min per week of moderate activities or 75 min per week of vigorous activities) to establish three categories: active, insufficiently active and inactive...
October 13, 2016: Journal of Human Hypertension
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