LIVIVO - Search results -

Search results

Result 1 - 10 of total 82

Search options

Article: The bivariate probit model, maximum likelihood estimation, pseudo true parameters and partial identification

Li, Chuhui / D.S. Poskitt / Xueyan Zhao

Journal of econometrics. 2019 Mar., v. 209, no. 1

2019

Abstract: This paper examines the notion of “identification by functional form” for two equation triangular systems for binary endogenous variables by providing a bridge between the literature on the recursive bivariate probit model and that on partial ... ...

Abstract	This paper examines the notion of “identification by functional form” for two equation triangular systems for binary endogenous variables by providing a bridge between the literature on the recursive bivariate probit model and that on partial identification. We evaluate the impact of functional form on the performance of (quasi) maximum likelihood estimators, and investigate the practical importance of available instruments in both cases of correct and incorrect distributional specification. Finally, we calculate average treatment effect bounds and demonstrate how properties of the estimators are explicable via a link between the notion of pseudo-true parameters and the concepts of partial identification.
Keywords	econometric models ; economic analysis ; economic theory ; equations ; statistical analysis
Language	English
Dates of publication	2019-03
Size	p. 94-113.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1460617-3
ISSN	0304-4076
ISSN	0304-4076
DOI	10.1016/j.jeconom.2018.07.009
Database	NAL-Catalogue (AGRICOLA)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Article ; Online: Complementary feeding and non communicable diseases: current knowledge and future research needs.

Poskitt, E M E / Breda, J

Nutrition, metabolism, and cardiovascular diseases : NMCD

2012 Volume 22, Issue 10, Page(s) 819–822

Abstract: ... b) how different body composition in infancy contributes to later NCDs, (c) whether there is an age ... window' when high protein intake is particularly associated with later overweight and obesity, (d ...

Abstract	Early diet and nutrition may set in place growth patterns and/or metabolic pathways that promote risk factors for later NCDs. Most relevant studies so far available have a cross-sectional or retrospective design and are thus of limited validity for evaluating the impact of early feeding on later disease. Standardised protocols for prospective research should be developed. The contribution of protein intake in early life to later NCD development has been the object of several studies; however future research should specifically target the effects of early protein intake on (a) how protein intake influences body composition, (b) how different body composition in infancy contributes to later NCDs, (c) whether there is an age 'window' when high protein intake is particularly associated with later overweight and obesity, (d) what levels of protein intake may protect against later overweight/obesity, (e) what level of cow milk intake in the first years of life minimises risk-inducing growth whilst meeting recommended calcium intakes. The role of the quality of fat and carbohydrate intakes at early ages should be better investigated. There is a dearth of data from many communities about the foods introduced as complementary feeds, the ages at which they are introduced and why mothers use these foods. Definitely more information is needed on how and to what extent mothers' behaviour is influenced by media, advertising and other commercial pressures and why formula fed infants are started on other foods much earlier than breast fed infants. Standardized protocols are needed to develop more data on complementary feeding in different regions, different countries and different socio-economic environments.
MeSH term(s)	Body Composition ; Breast Feeding/trends ; Chronic Disease/prevention & control ; Diet/trends ; Dietary Carbohydrates/administration & dosage ; Dietary Fats/administration & dosage ; Dietary Proteins/administration & dosage ; Energy Intake ; Feeding Behavior ; Humans ; Infant ; Infant Formula ; Infant Nutritional Physiological Phenomena ; Nutritional Status ; Obesity/physiopathology ; Obesity/prevention & control ; Overweight/physiopathology ; Overweight/prevention & control ; Risk Factors ; Sodium Chloride, Dietary/administration & dosage
Chemical Substances	Dietary Carbohydrates ; Dietary Fats ; Dietary Proteins ; Sodium Chloride, Dietary
Language	English
Publishing date	2012-10
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	1067704-5
ISSN	1590-3729 ; 0939-4753
ISSN (online)	1590-3729
ISSN	0939-4753
DOI	10.1016/j.numecd.2012.08.005
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 3149: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Assessing the magnitude of the concentration parameter in a simultaneous equations model

Poskitt, D. S / Skeels, C. L

The econometrics journal Vol. 12, No. 1 , p. 26-44

2009 Volume 12, Issue 1, Page(s) 26–44

Author's details	D. S. Poskitt and C. L. Skeels
Language	English
Size	graph. Darst.
Publisher	Wiley-Blackwell
Publishing place	Oxford [u.a.]
Document type	Article
ZDB-ID	1412265-0 ; 1475536-1
ISSN	1368-423X ; 1368-4221
ISSN (online)	1368-423X
ISSN	1368-4221
Database	ECONomics Information System

Order via subito

Article: Complementary feeding and non communicable diseases: Current knowledge and future research needs

Poskitt, E.M.E / Breda, J

Nutrition, metabolism and cardiovascular diseases. 2012 Oct., v. 22, no. 10

2012

Abstract: ... b) how different body composition in infancy contributes to later NCDs, (c) whether there is an age ... window’ when high protein intake is particularly associated with later overweight and obesity, (d ...

Abstract	Early diet and nutrition may set in place growth patterns and/or metabolic pathways that promote risk factors for later NCDs. Most relevant studies so far available have a cross-sectional or retrospective design and are thus of limited validity for evaluating the impact of early feeding on later disease. Standardised protocols for prospective research should be developed. The contribution of protein intake in early life to later NCD development has been the object of several studies; however future research should specifically target the effects of early protein intake on (a) how protein intake influences body composition, (b) how different body composition in infancy contributes to later NCDs, (c) whether there is an age ‘window’ when high protein intake is particularly associated with later overweight and obesity, (d) what levels of protein intake may protect against later overweight/obesity, (e) what level of cow milk intake in the first years of life minimises risk-inducing growth whilst meeting recommended calcium intakes. The role of the quality of fat and carbohydrate intakes at early ages should be better investigated. There is a dearth of data from many communities about the foods introduced as complementary feeds, the ages at which they are introduced and why mothers use these foods. Definitely more information is needed on how and to what extent mothers' behaviour is influenced by media, advertising and other commercial pressures and why formula fed infants are started on other foods much earlier than breast fed infants. Standardized protocols are needed to develop more data on complementary feeding in different regions, different countries and different socio-economic environments.
Keywords	advertising ; biochemical pathways ; body composition ; breast feeding ; calcium ; infancy ; infant formulas ; infants ; infectious diseases ; milk ; milk consumption ; mothers ; obesity ; protein intake ; risk factors
Language	English
Dates of publication	2012-10
Size	p. 819-822.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	1067704-5
ISSN	0939-4753
ISSN	0939-4753
DOI	10.1016/j.numecd.2012.08.005
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Cologne/Königswinter

Zs.A 3149: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Conceptual frameworks and experimental design in simultaneous equations

Poskitt, D. S / Skeels, C. L

Economics letters Vol. 100, No. 1 , p. 138-142

2008 Volume 100, Issue 1, Page(s) 138–142

Author's details	D. S. Poskitt; C. L. Skeels
Keywords	Test ; Simultanes Gleichungssystem
Language	English
Size	graph. Darst.
Publisher	Elsevier
Publishing place	Amsterdam [u.a.]
Document type	Article
ZDB-ID	717210-2
Database	ECONomics Information System

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Neonatal Brain Injury and Timing of Neurodevelopmental Assessment in Patients With Congenital Heart Disease.

Peyvandi, Shabnam / Chau, Vann / Guo, Ting / Xu, Duan / Glass, Hannah C / Synnes, Anne / Poskitt, Kenneth / Barkovich, A James / Miller, Steven P / McQuillen, Patrick S

Journal of the American College of Cardiology

2018 Volume 71, Issue 18, Page(s) 1986–1996

Abstract: ... with single ventricle physiology (SVP) and d-transposition of the great arteries (d-TGA).: Methods: Term ... newborns with d-TGA and SVP had pre-operative and post-operative brain magnetic resonance imaging and ND ... minimal WMI for d-TGA and SVP (p = 0.03 and p = 0.05, respectively) after adjusting for various factors ...

Abstract	Background: Brain injury (BI) is reported in 60% of newborns with critical congenital heart disease as white matter injury (WMI) or stroke. Neurodevelopmental (ND) impairments are reported in these patients. The relationship between neonatal BI and ND outcome has not been established. Objectives: This study sought to determine the association between peri-operative BI and ND outcomes in infants with single ventricle physiology (SVP) and d-transposition of the great arteries (d-TGA). Methods: Term newborns with d-TGA and SVP had pre-operative and post-operative brain magnetic resonance imaging and ND outcomes assessed at 12 and 30 months with the Bayley Scales of Infant Development-II. BI was categorized by the brain injury severity score and WMI was quantified by volumetric analysis. Results: A total of 104 infants had follow-up at 12 months and 70 had follow-up at 30 months. At 12 months, only clinical variables were associated with ND outcome. At 30 months, subjects with moderate-to-severe WMI had significantly lower Psychomotor Development Index (PDI) scores (13 points lower) as compared with those with none or minimal WMI for d-TGA and SVP (p = 0.03 and p = 0.05, respectively) after adjusting for various factors. Quantitative WMI volume was likewise associated. Stroke was not associated with outcome. The Bland-Altman limits of agreement for PDI scores at 12 and 30 months were wide (-40.3 to 31.2) across the range of mean PDI values. Conclusions: Increasing burden of WMI is associated with worse motor outcomes at 30 months for infants with critical congenital heart disease, whereas no adverse association was seen between small strokes and outcome. These results support the utility of neonatal brain magnetic resonance imaging in this population to aid in predicting later outcomes and the importance of ND follow-up beyond 1 year of age.
MeSH term(s)	Brain Injuries/diagnostic imaging ; Brain Injuries/etiology ; Cardiac Surgical Procedures/adverse effects ; Female ; Humans ; Infant, Newborn ; Longitudinal Studies ; Male ; Neurodevelopmental Disorders/diagnostic imaging ; Neurodevelopmental Disorders/etiology ; Neuroimaging ; Perioperative Care ; Postoperative Complications/diagnostic imaging ; Postoperative Complications/etiology ; Prospective Studies ; Transposition of Great Vessels/surgery
Language	English
Publishing date	2018-05-03
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
ZDB-ID	605507-2
ISSN	1558-3597 ; 0735-1097
ISSN (online)	1558-3597
ISSN	0735-1097
DOI	10.1016/j.jacc.2018.02.068
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 1846: Show issues			Location: Je nach Verfügbarkeit (siehe Angabe bei Bestand) bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular Jg. 1995 - 2021: Lesesall (1.OG) ab Jg. 2022: Lesesaal (EG)
Zs.MO 196: Show issues

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Approximating the distribution of the two-stage least squares estimator when the concentration parameter is small

Poskitt, D. S / Skeels, C. L

Journal of econometrics Vol. 139, No. 1 , p. 217-236

2007 Volume 139, Issue 1, Page(s) 217–236

Author's details	D. S. Poskitt; C. L. Skeels
Keywords	Schätztheorie ; Statistischer Test
Language	English
Size	graph. Darst.
Publisher	Elsevier
Publishing place	Amsterdam [u.a.]
Document type	Article
ZDB-ID	184861-6
Database	ECONomics Information System

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Glutaric acidemia type 1: Treatment and outcome of 168 patients over three decades.

Strauss, Kevin A / Williams, Katie B / Carson, Vincent J / Poskitt, Laura / Bowser, Lauren E / Young, Millie / Robinson, Donna L / Hendrickson, Christine / Beiler, Keturah / Taylor, Cora M / Haas-Givler, Barbara / Hailey, Jennifer / Chopko, Stephanie / Puffenberger, Erik G / Brigatti, Karlla W / Miller, Freeman / Morton, D Holmes

Molecular genetics and metabolism

2020 Volume 131, Issue 3, Page(s) 325–340

Abstract: Glutaric acidemia type 1 (GA1) is a disorder of cerebral organic acid metabolism resulting from biallelic mutations of GCDH. Without treatment, GA1 causes striatal degeneration in >80% of affected children before two years of age. We analyzed clinical, ... ...

Abstract	Glutaric acidemia type 1 (GA1) is a disorder of cerebral organic acid metabolism resulting from biallelic mutations of GCDH. Without treatment, GA1 causes striatal degeneration in >80% of affected children before two years of age. We analyzed clinical, biochemical, and developmental outcomes for 168 genotypically diverse GA1 patients managed at a single center over 31 years, here separated into three treatment cohorts: children in Cohort I (n = 60; DOB 2006-2019) were identified by newborn screening (NBS) and treated prospectively using a standardized protocol that included a lysine-free, arginine-enriched metabolic formula, enteral l-carnitine (100 mg/kg•day), and emergency intravenous (IV) infusions of dextrose, saline, and l-carnitine during illnesses; children in Cohort II (n = 57; DOB 1989-2018) were identified by NBS and treated with natural protein restriction (1.0-1.3 g/kg•day) and emergency IV infusions; children in Cohort III (n = 51; DOB 1973-2016) did not receive NBS or special diet. The incidence of striatal degeneration in Cohorts I, II, and III was 7%, 47%, and 90%, respectively (p < .0001). No neurologic injuries occurred after 19 months of age. Among uninjured children followed prospectively from birth (Cohort I), measures of growth, nutritional sufficiency, motor development, and cognitive function were normal. Adherence to metabolic formula and l-carnitine supplementation in Cohort I declined to 12% and 32%, respectively, by age 7 years. Cessation of strict dietary therapy altered plasma amino acid and carnitine concentrations but resulted in no serious adverse outcomes. In conclusion, neonatal diagnosis of GA1 coupled to management with lysine-free, arginine-enriched metabolic formula and emergency IV infusions during the first two years of life is safe and effective, preventing more than 90% of striatal injuries while supporting normal growth and psychomotor development. The need for dietary interventions and emergency IV therapies beyond early childhood is uncertain.
MeSH term(s)	Amino Acid Metabolism, Inborn Errors/diet therapy ; Amino Acid Metabolism, Inborn Errors/epidemiology ; Amino Acid Metabolism, Inborn Errors/genetics ; Amino Acid Metabolism, Inborn Errors/metabolism ; Brain/metabolism ; Brain/pathology ; Brain Diseases, Metabolic/diet therapy ; Brain Diseases, Metabolic/epidemiology ; Brain Diseases, Metabolic/genetics ; Brain Diseases, Metabolic/metabolism ; Carnitine/metabolism ; Child ; Child, Preschool ; Corpus Striatum/metabolism ; Corpus Striatum/pathology ; Diet ; Female ; Glutaryl-CoA Dehydrogenase/deficiency ; Glutaryl-CoA Dehydrogenase/genetics ; Glutaryl-CoA Dehydrogenase/metabolism ; Humans ; Infant ; Infant, Newborn ; Lysine/metabolism ; Male
Chemical Substances	Glutaryl-CoA Dehydrogenase (EC 1.3.8.6) ; Lysine (K3Z4F929H6) ; Carnitine (S7UI8SM58A)
Language	English
Publishing date	2020-10-04
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1418518-0
ISSN	1096-7206 ; 1096-7192
ISSN (online)	1096-7206
ISSN	1096-7192
DOI	10.1016/j.ymgme.2020.09.007
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 617: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Hippocampus, Amygdala, and Thalamus Volumes in Very Preterm Children at 8 Years: Neonatal Pain and Genetic Variation.

Chau, Cecil M Y / Ranger, Manon / Bichin, Mark / Park, Min Tae M / Amaral, Robert S C / Chakravarty, Mallar / Poskitt, Kenneth / Synnes, Anne R / Miller, Steven P / Grunau, Ruth E

Frontiers in behavioral neuroscience

2019 Volume 13, Page(s) 51

Abstract: ... preterm (<32 weeks GA) followed longitudinally from birth who underwent 3-D T1 MRI neuroimaging at ∼8 ...

Abstract	Altered hippocampal morphology and reduced volumes have been found in children born preterm compared to full-term. Stress inhibits neurogenesis in the hippocampus, and neonatal stress/noxious stimulation in rodent pups are associated with long-term alterations in hippocampal volumes. We have previously shown reduced cortical thickness and cerebellar volumes in relation to more exposure to pain-related stress of neonatal invasive procedures in children born very preterm. We have reported targeted gene-by-pain environment interactions that contribute to long-term brain development and outcomes in this population. We now aim to determine whether exposure to pain-related stress (adjusted for clinical factors and genotype) differentially impacts regional structures within the limbic system and thalamus, and investigate relationships with outcomes in very preterm children. Our study included 57 children born very preterm (<32 weeks GA) followed longitudinally from birth who underwent 3-D T1 MRI neuroimaging at ∼8 years. Hippocampal subfields and white matter tracts, thalamus and amygdala were automatically segmented using the MAGeT Brain algorithm. The relationship between those subcortical brain volumes (adjusted for total brain volume) and neonatal invasive procedures, gestational age (GA), illness severity, postnatal infection, days of mechanical ventilation, number of surgeries, morphine exposure, and genotype (
Language	English
Publishing date	2019-03-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2452960-6
ISSN	1662-5153
ISSN	1662-5153
DOI	10.3389/fnbeh.2019.00051
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Book: Small concentration asymptotics and instrumental variables inference

Poskitt, D. S / Skeels, C. L

(Working paper / Monash University, Department of Econometrics and Business Statistics ; 05,4)

2005

Author's details	D. S. Poskitt and C. L. Skeels
Series title	Working paper / Monash University, Department of Econometrics and Business Statistics ; 05,4
Keywords	Schätztheorie ; Mathematische Optimierung ; Inferenzstatistik
Language	English
Size	19 S, graph. Darst
Publishing place	Clayton, Vic
Document type	Book
Database	ECONomics Information System

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

To top

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Inter-library loan at ZB MED