Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2005 May 10;68(2-4):91-102.
doi: 10.1016/j.prevetmed.2004.11.013. Epub 2005 Jan 26.

Factors associated with time to neonatal diarrhoea in French beef calves

T Lorino  1 , J-J Daudin, S Robin, M Sanaa
Affiliations

Factors associated with time to neonatal diarrhoea in French beef calves

T Lorino et al. Prev Vet Med. .

Abstract

A prospective study was carried out on 92 randomly selected beef herds in the Midi-Pyrenees region in France. The objective was to determine factors associated with time to neonatal gastroenteritis. By taking into account the "intra-herd" correlation in failure time (in the semiparametric Cox model), we identified 12 management risk factors associated with hazard of diarrhoea. Some previously have been identified, but "new" risk factors were feeding of corn silage and the incidence of diarrhoea in the last season. We used the two main approaches which are often reviewed: marginal and frailty Cox models. Our results show that these two models give different parameter estimates, so the choice of the model remains crucial.

PubMed Disclaimer

Figures

Fig. 1
Fig. 1
Histogram of the frailty predictions exp⁡(θˆi).
See this image and copyright information in PMC

References

    1. Andersen P.K., Klein J.P., Zhang M.-J. Testing for centre effects in multi-center survival studies: a Monte Carlo comparison of fixed and random effects tests. Stat. Med. 1999;18:1489–1500. - PubMed
    1. Andrieu, S., Fostier, B., Tillie, M., Mathieu, P., 1985. L’ambiance dans les btiments d’élevages bovins: méthodes pour le diagnostic de l’ambiance dans les btiments d’élevages bovins. Doc. 87101, ITEB/EDE, Aisne.
    1. Bendali F., Bichet H., Schelcher F., Sanaa M. Pattern of diarrhoea in newborn beef calves in south-west France. Vet. Res. 1999;30:61–74. - PubMed
    1. Bendali F., Sanaa M., Bichet H., Schelcher F. Risk factors associated with diarrhoea in newborn calves. Vet. Res. 1999;30:509–522. - PubMed
    1. Bichet H. L’activité vétérinaire passée au peigne fin. Réseau VEGA. Rev. d’Epidémiosurveillance Anim. 1995;7:4–14.