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Article ; Online: Is Patient-Provider Racial Concordance Associated with Hispanics' Satisfaction with Health Care?

Oguz, Tunay

International journal of environmental research and public health

2018 Volume 16, Issue 1

Abstract: This study adds a gender approach to determine how patient provider racial concordance and acculturation affect Hispanics' satisfaction with care and inform more nuanced approaches to improving the quality of care for this population. Using the Medical ... ...

Abstract	This study adds a gender approach to determine how patient provider racial concordance and acculturation affect Hispanics' satisfaction with care and inform more nuanced approaches to improving the quality of care for this population. Using the Medical Expenditure Panel Surveys (MEPS) from 2009⁻2011, four binary satisfaction outcome measures were created from the MEPS: "doctor showed respect", "spent enough time", "explained things in a way you could understand", and "listened carefully". Next, a Probit model was employed to estimate the impact of racial concordance and acculturation on the probability of being satisfied with provider care for both male and female Hispanics. For Hispanic women, no significant association was found for the relationship between patient-provider concordance and the overall satisfaction with their care. Hispanic men were found to be less likely to be satisfied with some aspects of their medical care when they were racially concordant with their provider. Overcoming assumptions about shared identity is a crucial step in providing culturally competent care for all patients. There is a need for additional considerations in medical training to help physicians connect with patients, regardless of any type of observable concordance.
MeSH term(s)	Acculturation ; Adult ; Aged ; Aged, 80 and over ; Continental Population Groups/statistics & numerical data ; Culturally Competent Care/statistics & numerical data ; Female ; Hispanic Americans/statistics & numerical data ; Humans ; Male ; Middle Aged ; Patient Satisfaction/statistics & numerical data ; Personal Satisfaction ; Physician-Patient Relations ; Physicians/psychology
Language	English
Publishing date	2018-12-24
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1660-4601
ISSN (online)	1660-4601
DOI	10.3390/ijerph16010031
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Clinical Examination Findings Can Accurately Diagnose Developmental Dysplasia of The Hip-A Large, Single-Center Cohort.

Subaşı, İzzet Özay / Veizi, Enejd / Çepni, Şahin / Alkan, Hilmi / Oğuz, Temel / Fırat, Ahmet

Children (Basel, Switzerland)

2023 Volume 10, Issue 2

Abstract: Background: Physical examination findings such as limited hip abduction (LHA), asymmetric skin creases (ASC), and a popping sensation in the hip facilitate the diagnosis of developmental dysplasia of the hip (DDH). Screening with a simple physical ... ...

Abstract	Background: Physical examination findings such as limited hip abduction (LHA), asymmetric skin creases (ASC), and a popping sensation in the hip facilitate the diagnosis of developmental dysplasia of the hip (DDH). Screening with a simple physical examination during the first weeks of infancy is important for early detection of the condition, and a wide range of medical professionals, including general practitioners, obstetricians, pediatricians, and orthopedic surgeons etc. are involved in this process. The aim of this study was to determine the correlation between easily recognizable physical examination findings such as LHA, thigh/groin ACSs, and Ortolani and Barlow tests with ultrasound findings for the diagnosis of DDH. Methods: This study included 968 patients undergoing routine hip ultrasonography between December 2012 and January 2015. All patients were examined by an experienced orthopedic surgeon who was not the physician who performed the ultrasound examination to exclude bias between physical examination findings and ultrasound findings. Asymmetric skin folds (thigh and groin), limited abduction, Barlow and Ortolani tests were recorded. The relationship between the physical examination findings, ultrasound findings, and developmental dysplasia was investigated. Results: Of the 968 patients, 523 were female (54%) and 445 were male. On ultrasonography examination, 117 patients were found to have DDH. The sensitivity, specificity and negative predictive values of patients who were found to have both LHA and thigh/groin ASCs in all three physical examinations were high (83.8%, 70.2%, and 96.9%, respectively) while positive predictive values were found to be low (27.8%). Conclusion: Asymmetric skin creases on the thigh and groin and limited hip abduction, when evaluated together, have high sensitivity and specificity with additional high negative predictive values and could help during the initial screening process of DDH.
Language	English
Publishing date	2023-02-04
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2732685-8
ISSN	2227-9067
ISSN	2227-9067
DOI	10.3390/children10020304
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Article: Modulation of frontogenetic plankton production along a meandering jet by zonal wind forcing: An application to the Alboran Sea

Oguz, Temel / Mourre, Baptiste / Tintoré, Joaquin

Journal of geophysical research. 2017 Aug., v. 122, no. 8

2017

Abstract: We present a coupled physical‐biological modeling study to elucidate the changes in ageostrophic frontal dynamics and the frontogenetic plankton production characteristics of a meandering jet under the impacts of successive westerly/easterly wind events ... ...

Abstract	We present a coupled physical‐biological modeling study to elucidate the changes in ageostrophic frontal dynamics and the frontogenetic plankton production characteristics of a meandering jet under the impacts of successive westerly/easterly wind events combined with seasonal variations in the upstream transport and buoyancy flux characteristics of the jet, using a case study for the Alboran Sea (Western Mediterranean). Their nonlinear coupling is shown to result in different forms of physical and biological characteristics of the background jet structure that follows a meandering path around two anticyclonic gyres in the western and eastern basins and a cyclonic eddy in between. The westerly, downfront wind events broaden the jet, and result in stronger cross‐frontal density contrast and intensify ageostrophic cross‐frontal secondary circulation. Thus, they improve the frontogenetic plankton production with respect to the no‐wind case. They also support higher production along the northern coast in response to wind‐induced coastal upwelling and spreading of resulting nutrient‐rich, productive water by mesoscale stirring. These features weaken gradually as the jet transport reduces. In contrast, stronger and longer‐lasting easterlies during the reduced jet transport phase weaken the currents and frontal density structure, change the circular Western Alboran Gyre to an elongated form, and shift the main axis of the jet towards the southern basin. Then, frontogenesis fails to contribute to phytoplankton production that becomes limited to the eddy pumping within cyclones. Apart from the frontogenetic production, eddy pumping, mesoscale stirring, and diapycnal mixing of nutrients support intermittent and localized phytoplankton patches over the basin.
Keywords	basins ; case studies ; coasts ; geophysics ; phytoplankton ; research ; wind direction
Language	English
Dates of publication	2017-08
Size	p. 6594-6610.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	161667-5
ISSN	2169-9291 ; 2169-9275 ; 0148-0227 ; 0196-2256
ISSN (online)	2169-9291
ISSN	2169-9275 ; 0148-0227 ; 0196-2256
DOI	10.1002/2017JC012866
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Article ; Online: Ageostrophic Frontal Processes Controlling Phytoplankton Production in the Catalano-Balearic Sea (Western Mediterranean).

Oguz, Temel / Macias, Diego / Tintore, Joaquin

PloS one

2015 Volume 10, Issue 6, Page(s) e0129045

Abstract: Buoyancy-induced unstable boundary currents and the accompanying retrograde density fronts are often the sites of pronounced mesoscale activity, ageostrophic frontal processes, and associated high biological production in marginal seas. Biophysical model ...

Abstract	Buoyancy-induced unstable boundary currents and the accompanying retrograde density fronts are often the sites of pronounced mesoscale activity, ageostrophic frontal processes, and associated high biological production in marginal seas. Biophysical model simulations of the Catalano-Balearic Sea (Western Mediterranean) illustrated that the unstable and nonlinear southward frontal boundary current along the Spanish coast resulted in a strain-driven frontogenesis mechanism. High upwelling velocities of up to 80 m d(-1) injected nutrients into the photic layer and promoted enhanced production on the less dense, onshore side of the front characterized by negative relative vorticity. Additional down-front wind stress and heat flux (cooling) intensified boundary current instabilities and thus ageostrophic cross-frontal circulation and augmented production. Specifically, entrainment of nutrients by relatively strong buoyancy-induced vertical mixing gave rise to a more widespread phytoplankton biomass distribution within the onshore side of the front. Mesoscale cyclonic eddies contributed to production through an eddy pumping mechanism, but it was less effective and more limited regionally than the frontal processes. The model was configured for the Catalano-Balearic Sea, but the mechanisms and model findings apply to other marginal seas with similar unstable frontal boundary current systems.
MeSH term(s)	Chlorophyll/metabolism ; Mediterranean Region ; Models, Theoretical ; Oceans and Seas ; Phytoplankton/metabolism
Chemical Substances	Chlorophyll (1406-65-1)
Language	English
Publishing date	2015-06-11
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1932-6203
ISSN (online)	1932-6203
DOI	10.1371/journal.pone.0129045
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Modeling long-term changes of the Black Sea ecosystem characteristics

Dorofeyev, V. L. / Oguz, T. / Sukhikh, L. I. / Knysh, V. V. / Kubryakov, A. I. / Korotaev, G. K.

eISSN: 1812-0792

2018

Abstract: A three dimensional coupled physical-biological model is provided for the Black Sea to investigate its long-term changes under the synergistic impacts of eutrophication, climatic changes and population outbreak of the gelatinous invader Mnemiopsis leidyi ...

Abstract	A three dimensional coupled physical-biological model is provided for the Black Sea to investigate its long-term changes under the synergistic impacts of eutrophication, climatic changes and population outbreak of the gelatinous invader Mnemiopsis leidyi . The model circulation field is simulated using the high frequency ERA40 atmospheric forcing as well as assimilation of the available hydrographic and altimeter sea level anomaly data for the 30 yr period of 1971–2001. The circulation dynamics are shown to resolve well the different temporal and spatial scales from mesoscale to sub-basin scale and from seasonal peaks to decadal scale trend-like changes. The biogeochemical model includes the main vertical biological and chemical interactions and processes up to the anoxic interface zone. Its food web structure is represented by two phytoplankton and zooplankton size groups, bacterioplankton, gelatinous carnivores Mnemiopsis and Aurelia , opportunistic species Noctiluca scientillans . The nitrogen cycling is accommodated by the particulate and dissolved organic nitrogen compartments and the dissolved inorganic nitrogen in the forms of ammonium, nitrite and nitrate. The ecosystem model is able to simulate successfully main observed features and trends of the intense eutrophication phase (from the early 1970s to the early 1990s), but points to its modification to simulate better the ecosystem conditions of the post-eutrophication phase.
Subject code	551
Language	English
Publishing date	2018-08-10
Publishing country	de
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Current state of overfishing and its regional differences in the Black Sea

Oguz, Temel / Akoglu, Ekin / Salihoglu, Baris

Ocean & coastal management. 2012 Mar., v. 58

2012

Abstract: Long-term (1950–2006) changes of fish landings in combination with some ecosystem indicators are used to evaluate the status and sustainability of the Black Sea fishery. Following the depletion of large pelagic predator and demersal fish stocks during ... ...

Abstract	Long-term (1950–2006) changes of fish landings in combination with some ecosystem indicators are used to evaluate the status and sustainability of the Black Sea fishery. Following the depletion of large pelagic predator and demersal fish stocks during the 1950–1960s, the main fishery was targetted on small and medium pelagics that declined abruptly to ∼200kton (kton=10³t) at 1989–1991 after a highly productive (∼750kton) but overfished state in the 1980s. Thereafter, total landings in all the Black Sea countries except Turkey remained at most 10% level of the previous phase. For Turkey, only the low cost anchovy fishery was able to maintain at the mean catch size of 368±74kton for 1992–2006 that however represented roughly twice of the maximum sustainable catch. The absence of fish within the western, eastern and northern regions and the presence of only a fluctuating heavily exploited anchovy fishery in the southern region during the last 20 years demand an immediate common ecosystem-based fishery management policy and actions by all the coastal states.
Keywords	anchovies ; demersal fish ; ecosystems ; fisheries management ; issues and policy ; overfishing ; Black Sea
Language	English
Dates of publication	2012-03
Size	p. 47-56.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0964-5691
DOI	10.1016/j.ocecoaman.2011.12.013
Database	NAL-Catalogue (AGRICOLA)

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Article: Control mechanisms on the ctenophore Mnemiopsis population dynamics: A modeling study

Salihoglu, B / Fach, B.A / Oguz, T

Journal of marine systems. 2011 July, v. 87, no. 1

2011

Abstract: A comprehensive understanding of the mechanisms that control the ctenophore Mnemiopsis blooms in the Black Sea is gained with a zero-dimensional population based model. The stage resolving model considers detailed mass and population growth dynamics of ... ...

Abstract	A comprehensive understanding of the mechanisms that control the ctenophore Mnemiopsis blooms in the Black Sea is gained with a zero-dimensional population based model. The stage resolving model considers detailed mass and population growth dynamics of four stages of model-ctenophore. These stages include the different growth characteristics of egg, juvenile, transitional and adult stages. The dietary patterns of the different stages follow the observations given in the literature. The model is able to represent consistent development patterns, while reflecting the physiological complexity of a population of Mnemiopsis species. The model is used to analyze the influence of temperature and food variability on Mnemiopsis reproduction and outburst. Model results imply a strong temperature control on all stages of Mnemiopsis and that high growth rates at high temperatures can only be reached if food sources are not limited (i.e. 25mgCm⁻³ and 90mgCm⁻³ mesozooplankton and microplankton, respectively). A decrease of 5°C can result in considerable decrease in biomass of all stages, whereas at a temperature of 25°C a 40% decrease in food concentrations could result in termination of transfer between stages. Model results demonstrate the strong role of mesozooplankton in controlling the adult ctenophore biomass capable of reproduction and that different nutritional requirements of each stage can be critical for population growth. The high overall population growth rates may occur only when growth conditions are favorable for both larval and lobate stages. Current model allows the flexibility to assess the effect of changing temperature and food conditions on different ctenophore stages. Without including this structure in end-to-end models it is not possible to analyze the influence of ctenophores on different trophic levels of the ecosystem.
Keywords	Mnemiopsis ; adults ; biomass ; eating habits ; ecosystems ; egg quality ; larvae ; models ; nutrient requirements ; population growth ; reproduction ; temperature ; trophic relationships ; Black Sea
Language	English
Dates of publication	2011-07
Size	p. 55-65.
Publishing place	Elsevier B.V.
Document type	Article
ISSN	0924-7963
DOI	10.1016/j.jmarsys.2011.03.001
Database	NAL-Catalogue (AGRICOLA)

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Book ; Online: Modeling dissolved oxygen dynamics and hypoxia

Peña, M. A. / Katsev, S. / Oguz, T. / Gilbert, D.

eISSN: 1726-4189

2010

Abstract: Hypoxia conditions are increasing throughout the world, influencing biogeochemical cycles of elements and marine life. Hypoxia results from complex interactions between physical and biogeochemical processes, which can not be understood by observations ... ...

Abstract	Hypoxia conditions are increasing throughout the world, influencing biogeochemical cycles of elements and marine life. Hypoxia results from complex interactions between physical and biogeochemical processes, which can not be understood by observations alone. Models are invaluable tools at studying system dynamics, generalizing discrete observations and predicting future states. They are also useful as management tools for evaluating site-specific responses to management scenarios. Here we review oxygen dynamics models that have significantly contributed to a better understanding of the effects of natural processes and human perturbations on the development of hypoxia, factors controlling the extent and temporal variability of coastal hypoxia, and the effects of oxygen depletion on biogeochemical cycles. Because hypoxia occurs in a variety of environments and can be persistent, periodic or episodic, models differ significantly in their complexity and temporal and spatial resolution. We discuss the progress in developing hypoxia models for benthic and pelagic systems that range from simple box models to three dimensional circulation models. Applications of these models in five major hypoxia regions are presented. In the last decades, substantial progress has been made towards the parameterization of biogeochemical processes in both hypoxic water columns and sediments. In coastal regions, semi-empirical models have been used more frequently than mechanistic models to study nutrient enrichment and hypoxia relationships. Recent advances in three-dimensional coupled physical-ecological-biogeochemical models have allowed a better representation of physical-biological interactions in these systems. We discuss the remaining gaps in process descriptions and suggest directions for improvement. Better process representations in models will help us answer several important questions, such as those about the causes of the observed worldwide increase in hypoxic conditions, and future changes in the intensity and spread of coastal hypoxia. At the same time, quantitative model intercomparison studies suggest that the predictive ability of our models may be adversely affected by their increasing complexity, unless the models are properly constrained by observations.
Subject code	551
Language	English
Publishing date	2010-03-09
Publishing country	de
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Controls of plankton production by pelagic fish predation and resource availability in the Alboran and Balearic Seas

Oguz, Temel / Diego Macias / Javier Ruiz / Joaquin Tintore / Lionel Renault

Elsevier Ltd Progress in oceanography. 2013 May, June, v. 112-113

2013

Abstract: A one-dimensional coupled physical and intermediate-complexity biochemical model comprising large and small phytoplankton and zooplankton groups, particulate organic nitrogen, ammonium and nitrate was developed to study the physical–biogeochemical ... ...

Abstract	A one-dimensional coupled physical and intermediate-complexity biochemical model comprising large and small phytoplankton and zooplankton groups, particulate organic nitrogen, ammonium and nitrate was developed to study the physical–biogeochemical interactions and parameters that control plankton production in the Alboran and Balearic Sea ecosystems. The model findings suggest that pelagic fish predation and resource availability through lateral and vertical nutrient inputs jointly characterize the plankton community structures. In agreement with previous observations, a typical annual plankton structure of the mesotrophic systems involves a vertically homogeneous biomass of large groups of phytoplankton and zooplankton within the upper 50-to-100m layer from mid-November to April and a subsurface biomass accumulation distributed roughly within 25–75m depths in the following months. Their light and temperature limitations constrain the smaller groups into the thermocline zone (25–50m) during late spring and summer. These obtained results were dependent on the zooplankton actively switching between preys (i.e., the food preference coefficients dependent on prey biomass). In the case of no switching, spurious dynamic equilibrium solutions may arise in the case of a constant and weak fish predation rate and using the quadratic predation formulation. The choice of a Holling Type II (i.e., hyperbolic) predation function may, however avoid ambiguous representation of the annual plankton structure in the case of a constant food preference choice under relatively weak predation pressures.
Keywords	ammonium nitrate ; biomass production ; community structure ; ecosystems ; food choices ; models ; nitrogen ; pelagic fish ; phytoplankton ; predation ; spring ; summer ; temperature ; zooplankton
Language	English
Dates of publication	2013-05
Size	p. 1-14.
Publishing place	Elsevier Ltd
Document type	Article
ISSN	0079-6611
DOI	10.1016/j.pocean.2013.03.001
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Fueling plankton production by a meandering frontal jet: a case study for the Alboran Sea (Western Mediterranean).

Oguz, Temel / Macias, Diego / Garcia-Lafuente, Jesus / Pascual, Ananda / Tintore, Joaquin

PloS one

2014 Volume 9, Issue 11, Page(s) e111482

Abstract: A three dimensional biophysical model was employed to illustrate the biological impacts of a meandering frontal jet, in terms of efficiency and persistency of the autotrophic frontal production, in marginal and semi-enclosed seas. We used the Alboran Sea ...

Abstract	A three dimensional biophysical model was employed to illustrate the biological impacts of a meandering frontal jet, in terms of efficiency and persistency of the autotrophic frontal production, in marginal and semi-enclosed seas. We used the Alboran Sea of the Western Mediterranean as a case study. Here, a frontal jet with a width of 15-20 km, characterized by the relatively low density Atlantic water mass, flows eastward within the upper 100 m as a marked meandering current around the western and the eastern anticyclonic gyres prior to its attachment to the North African shelf/slope topography of the Algerian basin. Its inherent nonlinearity leads to the development of a strong ageostrophic cross-frontal circulation that supplies nutrients into the nutrient-starved euphotic layer and stimulates phytoplankton growth along the jet. Biological production is larger in the western part of the basin and decreases eastwards with the gradual weakening of the jet. The higher production at the subsurface levels suggests that the Alboran Sea is likely more productive than predicted by the satellite chlorophyll data. The Mediterranean water mass away from the jet and the interiors of the western and eastern anticyclonic gyres remain unproductive.
MeSH term(s)	Biomass ; Mediterranean Sea ; Models, Theoretical ; Oceans and Seas ; Plankton
Language	English
Publishing date	2014
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1932-6203
ISSN (online)	1932-6203
DOI	10.1371/journal.pone.0111482
Database	MEDical Literature Analysis and Retrieval System OnLINE

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