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Negative Binomial and multilevel

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https://www.readbyqxmd.com/read/28738685/assessing-the-effect-of-the-vha-pcmh-model-on-utilization-patterns-among-veterans-with-ptsd
#1
Ian Randall, Charles Maynard, Gary Chan, Beth Devine, Chris Johnson
OBJECTIVES: The Veterans Health Administration (VHA) implemented a patient-centered medical home (PCMH)-based Patient Aligned Care Teams (PACT) model in 2010. We examined its effects on the utilization of health services among US veterans with posttraumatic stress disorder (PTSD). STUDY DESIGN: We analyzed VHA clinical and administrative data to conduct an interrupted time series study. Encounter-level data were obtained for the period of April 1, 2005, through March 31, 2014...
May 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28666449/impact-of-health-workforce-availability-on-health-care-seeking-behavior-of-patients-with-diabetes-mellitus-in-china
#2
Yinzi Jin, Weiming Zhu, Beibei Yuan, Qingyue Meng
BACKGROUND: China has a high burden of diabetes mellitus (DM), and a large proportion of DM patients remain untreated for various reasons, including low availability of primary health care providers. DM patient management is one of the priorities in China's national essential public health programs. Shortage of health workforce has been a major barrier to improving access to health care for DM patients. This study examines the impact of the health workforce on outpatient utilization of DM patients...
July 1, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28656451/individual-level-exposure-to-disaster-neighborhood-environmental-characteristics-and-their-independent-and-combined-associations-with-depressive-symptoms-in-women
#3
Symielle A Gaston, Julia Volaufova, Edward S Peters, Tekeda F Ferguson, William T Robinson, Nicole Nugent, Edward J Trapido, Ariane L Rung
PURPOSE: The severity of the stress response to experiencing disaster depends on individual exposure and background stress prior to the event. To date, there is limited research on the interaction between neighborhood environmental stress and experiencing an oil spill, and their effects on depression. The objective of the current study was to assess if the association between exposure to the Deepwater Horizon Oil Spill (DHOS) and depressive symptoms varied by neighborhood characteristics...
June 27, 2017: Social Psychiatry and Psychiatric Epidemiology
https://www.readbyqxmd.com/read/28651113/trends-in-pieds-use-among-male-clients-of-needle-syringe-programs-in-queensland-australia-2007-2015
#4
B Jacka, A Peacock, L Degenhardt, R Bruno, P Clare, R Kemp, A Dev, B Larance
BACKGROUND: Increased utilisation of needle-syringe programs (NSP) by men who inject performance and image-enhancing drugs (PIEDs) has been reported. While fewer in number, people who inject PIEDs possess distinct service and knowledge needs compared to other NSP clients. METHODS: Using standardised data from 26 NSP outlets through the Queensland NSP Minimum Data Set (QNSPMDS), trends in occasions of services among males intending to inject PIEDs were assessed using multilevel mixed-effects negative binomial regression, adjusting for month, year, and age, and clustering by site...
June 23, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/28635299/prevalence-and-geographic-variations-of-polypharmacy-among-west-virginia-medicaid-beneficiaries
#5
Xue Feng, Xi Tan, Brittany Riley, Tianyu Zheng, Thomas K Bias, James B Becker, Usha Sambamoorthi
BACKGROUND: West Virginia (WV) residents are at high risk for polypharmacy given its considerable chronic disease burdens. OBJECTIVE: To evaluate the prevalence, correlates, outcomes, and geographic variations of polypharmacy among WV Medicaid beneficiaries. METHODS: In this cross-sectional study, we analyzed 2009-2010 WV Medicaid fee-for-service (FFS) claims data for adults aged 18-64 (N=37,570). We defined polypharmacy as simultaneous use of drugs from five or more different drug classes on a daily basis for at least 60 consecutive days in one year...
November 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28545412/how-do-population-general-practice-and-hospital-factors-influence-ambulatory-care-sensitive-admissions-a-cross-sectional-study
#6
John Busby, Sarah Purdy, William Hollingworth
BACKGROUND: Reducing unplanned hospital admissions is a key priority within the UK and other healthcare systems, however it remains uncertain how this can be achieved. This paper explores the relationship between unplanned ambulatory care sensitive condition (ACSC) admission rates and population, general practice and hospital characteristics. Additionally, we investigated if these factors had a differential impact across 28 conditions. METHODS: We used the English Hospital Episode Statistics to calculate the number of unplanned ACSC hospital admissions for 28 conditions at 8,029 general practices during 2011/12...
May 25, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28445024/an-economic-evaluation-of-the-enhanced-recovery-after-surgery-eras-multisite-implementation-program-for-colorectal-surgery-in-alberta
#7
Nguyen X. Thanh, Anderson W. Chuck, Tracy Wasylak, Jeannette Lawrence, Peter Faris, Olle Ljungqvist, Gregg Nelson, Leah M. Gramlich
BACKGROUND: In February 2013, Alberta Health Services established an Enhanced Recovery After Surgery (ERAS) implementation program for adopting the ERAS Society colorectal guidelines into 6 sites (initial phase) that perform more than 75% of all colorectal surgeries in the province. We conducted an economic evaluation of this initiative to not only determine its cost-effectiveness, but also to inform strategy for the spread and scale of ERAS to other surgical protocols and sites. METHODS: We assessed the impact of ERAS on patients’ health services utilization (HSU; length of stay [LOS], readmissions, emergency department visits, general practitioner and specialist visits) within 30 days of discharge by comparing pre- and post-ERAS groups using multilevel negative binomial regressions...
December 1, 2016: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/28419146/household-crowding-as-a-potential-mediator-of-socioeconomic-determinants-of-tuberculosis-incidence-in-brazil
#8
Daniele Maria Pelissari, Fredi Alexander Diaz-Quijano
Although many studies have identified social conditions associated with tuberculosis, contextual and individual factors have rarely been analysed simultaneously. Consequently, we aimed to identify contextual and individual factors associated with tuberculosis incidence in general population in Brazil in 2010. We also assessed whether household crowding mediates the association between socioeconomic determinants and tuberculosis incidence. Individual data of tuberculosis cases were obtained from 5,565 municipalities in Brazil in 2010 (last year of national census), and merged with contextual variables...
2017: PloS One
https://www.readbyqxmd.com/read/28279992/association-of-comorbidity-and-health-service-usage-among-patients-with-dementia-in-the-uk-a-population-based-study
#9
Jorge Browne, Duncan A Edwards, Kirsty M Rhodes, D James Brimicombe, Rupert A Payne
BACKGROUND: The majority of people with dementia have other long-term diseases, the presence of which may affect the progression and management of dementia. This study aimed to identify subgroups with higher healthcare needs, by analysing how primary care consultations, number of prescriptions and hospital admissions by people with dementia varies with having additional long-term diseases (comorbidity). METHODS: A retrospective cohort study based on health data from the Clinical Practice Research Datalink (CPRD) was conducted...
March 9, 2017: BMJ Open
https://www.readbyqxmd.com/read/28253539/social-rejection-and-alcohol-use-in-daily-life
#10
Holly B Laws, Nicole E Ellerbeck, Alyne S Rodrigues, Jessica A Simmons, Emily B Ansell
BACKGROUND: Prior studies have found that social rejection is associated with increases in negative affect, distress, and hostility. Fewer studies, however, have examined the impact of social rejection on alcohol use, and no known studies have tested whether the impact of social rejection by close others differs from social rejection by acquaintances in its association with subsequent drinking. METHODS: Participants completed event-contingent reports of their social interactions and alcohol use for 14 consecutive days on smartphones...
April 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28237952/factors-associated-with-hospitalisations-in-chronic-conditions-deemed-avoidable-ecological-study-in-the-spanish-healthcare-system
#11
Ester Angulo-Pueyo, Manuel Ridao-López, Natalia Martínez-Lizaga, Sandra García-Armesto, Salvador Peiró, Enrique Bernal-Delgado
OBJECTIVES: Potentially avoidable hospitalisations have been used as a proxy for primary care quality. We aimed to analyse the ecological association between contextual and systemic factors featured in the Spanish healthcare system and the variation in potentially avoidable hospitalisations for a number of chronic conditions. METHODS: A cross-section ecological study based on the linkage of administrative data sources from virtually all healthcare areas (n=202) and autonomous communities (n=16) composing the Spanish National Health System was performed...
February 24, 2017: BMJ Open
https://www.readbyqxmd.com/read/28117538/fall-related-hospitalization-in-people-with-parkinson-s-disease
#12
S S Paul, L Harvey, C G Canning, S Boufous, S R Lord, J C T Close, C Sherrington
BACKGROUND AND PURPOSE: Falls are common in people with Parkinson's disease (PD) but few data exist on fall-related hospitalizations in this group. This population-based study compared fall-related hospital admissions, injury rates and consequences in people with and without PD, and determined whether PD was an independent predictor of fall-related hospital length of stay. METHODS: This was a retrospective study using probabilistic linkage of hospital data in people aged ≥65 years hospitalized for a fall between 1 July 2005 and 31 December 2013 in New South Wales, Australia...
January 24, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/27999279/spatiotemporal-variations-in-lung-cancer-mortality-in-china-between-2006-and-2012-a-multilevel-analysis
#13
Yunning Liu, Thomas Astell-Burt, Jiangmei Liu, Peng Yin, Xiaoqi Feng, Jinling You, Andrew Page, Maigeng Zhou, Lijun Wang
We investigated temporal trends and geographical variations in lung cancer mortality in China from 2006 to 2012. Lung cancer mortality counts for people aged over 40 years were extracted from the China Mortality Surveillance System for 161 disease surveillance points. Negative binomial regression was used to investigate potential spatiotemporal variation and correlations with age, gender, urbanization, and region. Lung cancer mortality increased in China over the study period from 78.77 to 85.63 (1/100,000), with higher mortality rates evident in men compared to women...
December 16, 2016: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/27920221/duration-in-poverty-related-programs-and-number-of-child-maltreatment-reports-a-multilevel-negative-binomial-study
#14
Hyunil Kim, Brett Drake
This study examined the relationship of a family's duration in poverty-related programs (i.e., Aid to Families with Dependent Children/Temporary Assistance for Needy Families and Medicaid) to the subject child's number of maltreatment reports while considering race and baseline neighborhood poverty. Children from a large Midwestern metropolitan area were followed through a linked cross-sector administrative database from birth to age 15. Generalized multilevel models were employed to account for the multilevel structure of the data (i...
December 5, 2016: Child Maltreatment
https://www.readbyqxmd.com/read/27827302/short-rest-between-shift-intervals-increases-the-risk-of-sick-leave-a-prospective-registry-study
#15
Øystein Vedaa, Ståle Pallesen, Siri Waage, Bjørn Bjorvatn, Børge Sivertsen, Eilin Erevik, Erling Svensen, Anette Harris
OBJECTIVES: The purpose of this study was to use objective registry data to prospectively investigate the effects of quick returns (QR, <11 hours of rest between shifts) and night shifts on sick leave. METHODS: A total of 1538 nurses (response rate =41.5%) answered questionnaires on demographics and personality and provided consent to link this information to registry data on shift work and sick leave from employers' records. A multilevel negative binomial model was used to investigate the predictive effect of exposure to night shifts and QR every month for 1 year, on sick leave the following month...
July 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/27823752/reshaping-care-for-older-people-trends-in-emergency-admissions-to-hospital-during-a-period-of-simultaneous-interventions-in-glasgow-city-april-2011-march-2015
#16
Kate A Levin, Emilia M Crighton
This study describes trends in emergency admissions (EAs) in Glasgow City during a period when interventions were designed and implemented, aimed at shifting the balance from institutional to community-based care. Standardised monthly rates of EAs between April 2011 and March 2015 were calculated, for residents of Glasgow City aged 65 years and over. Multilevel zero-inflated Negative Binomial models for EAs nested by datazone were created, adjusting for sex, 5-year age group, area-level deprivation (SIMD quintile), season, month and month squared...
December 2016: Maturitas
https://www.readbyqxmd.com/read/27669402/sustainability-of-a-proactive-geriatric-trauma-consultation-service
#17
Camilla L Wong, Raghda Al Atia, Amanda McFarlan, Holly Y Lee, Christina Valiaveettil, Barbara Haas
BACKGROUND: Proactive geriatric trauma consultation service (GTCS) models have been associated with better delivery of geriatric care and functional outcomes. Whether such collaborative models can be improved and sustained remains uncertain. We describe the sustainability and process improvements of an inpatient GTCS. METHODS: We assessed workflow using interviews and surveys to identify opportunities to optimize the referral process for the GTCS. Sustainability of the service was assessed via a prospective case series (July 2012-December 2013)...
February 2017: Canadian Journal of Surgery. Journal Canadien de Chirurgie
https://www.readbyqxmd.com/read/27650382/accounting-for-reporting-fatigue-is-required-to-accurately-estimate-incidence-in-voluntary-reporting-health-schemes
#18
Matthew Gittins, Roseanne McNamee, Fiona Holland, Lesley-Anne Carter
OBJECTIVE: Accurate estimation of the true incidence of ill-health is a goal of many surveillance systems. In surveillance schemes including zero reporting to remove ambiguity with nonresponse, reporter fatigue might increase the likelihood of a false zero case report in turn underestimating the true incidence rate and creating a biased downward trend over time. STUDY DESIGN AND SETTING: Multilevel zero-inflated negative binomial models were fitted to incidence case reports of three surveillance schemes running between 1996 and 2012 in the United Kingdom...
January 2017: Journal of Clinical Epidemiology
https://www.readbyqxmd.com/read/27434998/symptom-trajectories-and-occurrence-in-older-saudi-children-with-cancer-during-a-course-of-chemotherapy
#19
E Alhelih, O Ghazi Baker, A E Aboshaiqah
This research aimed to describe changes in symptom occurrence and severity of the 31 symptoms during the chemotherapy cycle at three time points. This descriptive, longitudinal study investigated Saudi children who underwent a cycle of chemotherapy (n = 132) in four tertiary hospitals. The Arabic version of the Memorial Symptom Assessment Scale, Karnofsky Performance Status and a demographic questionnaire were used. More than 30% of children reported 10 or more symptoms during the cycle. Symptom occurrence trajectories were analysed using multilevel logistic regression...
July 20, 2016: European Journal of Cancer Care
https://www.readbyqxmd.com/read/27389670/semiparametric-models-for-multilevel-overdispersed-count-data-with-extra-zeros
#20
Marzieh Mahmoodi, Abbas Moghimbeigi, Kazem Mohammad, Javad Faradmal
This study proposes semiparametric models for analysis of hierarchical count data containing excess zeros and overdispersion simultaneously. The methods discussed in this paper handle nonlinear covariate effects through flexible semiparametric multilevel regression techniques. This is performed by providing a comprehensive comparison of semiparametric multilevel zero-inflated negative binomial and semiparametric multilevel zero-inflated generalized Poisson models under the real and simulated data. An EM algorithm based on Newton-Raphson equations for maximum penalized likelihood estimation approach is developed...
July 7, 2016: Statistical Methods in Medical Research
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