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Title
Robust Poisson likelihood estimation for frailty Cox models: A simulation study
Source
Communications in Statistics - Simulation and Computation
Date
2017
Author
Elghafghuf, Adel
;
Stryhn, Henrik
Genre
Journal Article
Volume
46
Issue
4
Start Page
2907
DOI
10.1080/03610918.2015.1066806
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Title
Correlated versus uncorrelated frailty Cox models: A comparison of different estimation procedures
Source
Biometrical Journal
Date
2016
Author
Elghafghuf, Adel
;
Stryhn, Henrik
Genre
Journal Article
Volume
58
Issue
5
Start Page
1198
DOI
10.1002/bimj.201500066
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Title
Nursing. A professional foundation
Source
Sygeplejersken
Date
1998
Author
Stryhn, Henrik E.
Genre
Journal Article
Volume
98
Issue
6
Start Page
42
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Title
Comparison of methods for fitting Cox models with random herd and treatment-by-herd effects
Source
Islamic Countries Conference on Statistical Sciences 2012 (ICCS-12)
Date
2013
Author
Elghafghuf, Adel
;
Stryhn, Henrik
Genre
Conference Proceedings
Abstract
In many veterinary studies, including clinical trials and epidemiological investigations, data are clustered into groups such as herds. When such...
Volume
23
Start Page
367
ISBN
9789698858117
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Title
Increasing weed flora in Danish beet, pea and winter barley fields
Source
Crop Protection
Date
2012
Author
Andreasen, Christian
;
Stryhn, Henrik
Genre
Journal Article
Abstract
In Denmark, several political initiatives have been taken to reduce use of pesticides and fertilizer in order to avoid unwanted side effect of the...
Volume
36
Start Page
11
DOI
10.1016/j.cropro.2012.01.012
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Title
The location of the maximum of asymmetric two-sided Brownian motion with triangular drift
Source
Statistics & Probability Letters
Date
1996
Author
Stryhn, Henrik E.
Genre
Journal Article
Abstract
The argmax distribution in Bhattacharya and Brockwell (1976) is extended to branches with unequal scalings as well as drifts. Examples show how...
Volume
29
Issue
3
Start Page
279
DOI
10.1016/0167-7152(95)00183-2
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Title
Approximating the distribution of maximum-likelihood contour estimators in 2-region images
Source
Scandinavian Journal of Statistics
Date
1994
Author
Rudemo, M.
;
Stryhn, Henrik E.
Genre
Journal Article
Abstract
We consider two types of two-region image models with a univariate boundary representation and independent lattice observations. A non-parametric...
Volume
21
Issue
1
Start Page
41
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Title
Topics in spatial statistics - discussion and comments
Source
Scandinavian Journal of Statistics
Date
1994
Author
Rudemo, M.
;
Stryhn, Henrik E.
Genre
Journal Article
Volume
21
Issue
4
Start Page
350
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Title
Risk of nonpregnancy, risk of disposal for pregnant cows, and duration of the calving interval in cow-calf herds exposed to the oil and gas industry in Western Canada
Source
Archives of Environmental & Occupational Health
Date
2008
Author
Waldner, Cheryl L.
;
Stryhn, Henrik
Genre
Journal Article
Volume
63
Issue
4
Start Page
241
Full Text
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Title
Discretely observing a white noise change-point model in the presence of blur
Source
Bernoulli
Date
1998
Author
Istas, J.
;
Stryhn, Henrik E.
Genre
Journal Article
Abstract
In discretely observed diffusion models, inference about unknown parameters in a smooth drift function has attracted much interest of late. This...
Volume
4
Issue
2
Start Page
185
DOI
10.2307/3318750
Publication Status
NO_OBJ
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Title
Generalised linear mixed models analysis of risk factors for contamination of Danish broiler flocks with Salmonella typhimurium
Source
Preventive Veterinary Medicine
Date
1999
Author
Chriel, M.
;
Stryhn, Henrik E.
;
Dauphin, G.
Genre
Journal Article
Abstract
We present a retrospective observational study of risk factors associated with the occurrence of Salmonella typhimurium (ST) in Danish broiler...
Volume
40
Issue
1
Start Page
1
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Title
A cross-classified and multiple membership Cox model applied to calf mortality data
Source
Preventive veterinary medicine
Date
2014
Author
Elghafghuf, Adel
;
Stryhn, Henrik
;
Waldner, Cheryl
Genre
Journal Article
Abstract
A cross-classified and multiple membership Cox model was applied to calf mortality data from Western Canada, where 23,409 calves from 174 herds...
Volume
115
Issue
1-2
Start Page
29
DOI
10.1016/j.prevetmed.2014.03.012
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Title
Evaluation of underlying risk as a source of heterogeneity in meta-analyses
Subtitle
a simulation study of Bayesian and frequentist implementations of three models
Source
Preventive Veterinary Medicine
Date
2007
Author
Dohoo, Ian
;
Stryhn, Henrik
;
Sanchez, Javier
Genre
Journal Article
Abstract
Evaluation of important causes of heterogeneity among study results is an important component of any meta-analysis. For factors which can be...
Volume
81
Issue
1-3
Start Page
38
DOI
10.1016/j.prevetmed.2007.04.010
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Title
Discrepancies in the determination of sperm concentration using Burker-Turk, Thoma and Makler counting chambers
Source
Theriogenology
Date
2005
Author
Christensen, P.
;
Stryhn, Henrik E.
;
Hansen, C.
Genre
Journal Article
Abstract
Determination of sperm concentration by use of a haemocytometer or counting chamber is an important step in semen evaluation and is also used for...
Volume
63
Issue
4
Start Page
992
DOI
10.1016/j.theriogenology.2004.05.026
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Title
Generalized linear mixed models applied to large-scale Salmonella data for Danish broiler flocks
Source
Epidemiologie et Sante Animale
Date
1997
Author
Chriel, M.
;
Stryhn, Henrik E.
;
Dauphin, G.
Genre
Journal Article
Issue
31/32
Start Page
13.19.1
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Title
Post-handling mortality during controlled field trials with marine grow-out Atlantic salmon, Salmo salar L
Source
Aquaculture
Date
2012
Author
Burnley, Timothy
;
Stryhn, Henrik
;
Hammell, K. L.
Genre
Journal Article
Abstract
During the course of a multi-site clinical field trial comparing the field effectiveness of Atlantic salmon (Salmo salar L.) vaccines, an...
Volume
368-369
Start Page
55
DOI
10.1016/j.aquaculture.2012.09.006
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Title
Using pseudogold standards and latent-class analysis in combination to evaluate the accuracy of three diagnostic tests
Source
Preventive Veterinary Medicine
Date
2008
Author
Nérette, Pascale
;
Stryhn, Henrik
;
Dohoo, Ian
;
Hammell, Larry
Genre
Journal Article
Abstract
We previously reported our use of latent-class models to estimate the sensitivity (Se) and specificity (Sp) for each of three tests used to monitor...
Volume
85
Issue
3-4
Start Page
207
DOI
10.1016/j.prevetmed.2008.01.011
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Title
Nitrate concentrations in soil solutions below Danish forests
Source
Forest Ecology and Management
Date
1999
Author
Callesen, I.
;
Raulund Rasmussen, K.
;
Gundersen, P.
;
Stryhn, Henrik E.
Genre
Journal Article
Abstract
Nitrate in the soil water below the root zone is a pre-condition for nitrate leaching, and it indicates loss of nutrients from the forest ecosystem...
Volume
114
Issue
1
Start Page
71
DOI
10.1016/S0378-1127(98)00382-X
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Title
Herd prevalence of Salmonella spp. in Danish pig herds after implementation of the Danish Salmonella Control Program with reference to a pre-implementation study
Source
Veterinary Microbiology
Date
2002
Author
Christensen, J.
;
Baggesen, D. L.
;
Nielsen, B.
;
Stryhn, Henrik E.
Genre
Journal Article
Abstract
The problems addressed are: (1) comparison of prevalences of Salmonella spp. in different herd types in the Danish pig population after...
Volume
88
Issue
2
Start Page
175
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Title
The use of multilevel models to evaluate sources of variation in reproductive performance in dairy cattle in Reunion Island
Source
Preventive Veterinary Medicine
Date
2001
Author
Dohoo, Ian R.
;
Tillard, E.
;
Stryhn, Henrik E.
;
Faye, B.
Genre
Journal Article
Abstract
Sources of variation in measures of reproductive performance in dairy cattle were evaluated using data collected from 3207 lactations in 1570 cows...
Volume
50
Issue
1-2
Start Page
127
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