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Apports des SIG lpidmiologie et la sant publique :un survol

Alain-jacques ValleronUPMC & InsermApports des SIG lpidmiologie et la sant publique :un survol

Alain-jacques ValleronUPMC & Inserm

Dfinition dun SIG ?

In : Le serveur ducatif de l'IGN et de l'Education Nationale sur l'information gographiquehttp://seig.ensg.ign.fr/Person, place, timeLe fondement de lpidemiologie

SIG pour aider Dcrire

Expliquer

agir

Dcrire

Kriging : Carrat et col., Am J of Epidemiology, 1992

Am J of Epid, 1992Dcrirede plus en plus doutils interactifs et de bases de donnes disponibleshttp://ratecalc.cancer.gov/

HistoriqueSnow, Cholera, 1849-1854

131854Districts with water supplied by Population Deaths from Cholera Cholera death rate per 1000 population Southwark and Vauxhall Company Only 167,654 844 5.0 Lambeth Company Only 19,133 18 0.9 Both Companies 300,149 652 2.2 14

Number of Fatal attacks by date of onset: Broad Street outbreak, London, 1854. Snow - FarrVoir Eyler : Soz.- Prventivmed. 46 (2001) 225232

Farr : C = C (e + a)/(e + a) C et C sont les taux de mortalit dans deux districts daltitude e et eValeurs observes: 177, 102,65, 34, 27, 22, 17, 7Valeurs thoriques: 174, 99, 53, 34, 27, 22, 20, 6

Villerm1782-1863

Julia, C. and A.J. Valleron, Louis-Rene Villerme (1782-1863), a pioneer in social epidemiology: re-analysis of his data on comparative mortality in Paris in the early 19th century. J Epidemiol Community Health, 2010. Corrlation cologiqueCausalit?

Nygard, K., et al., Association between environmental risk factors and campylobacter infections in Sweden Epidemiol Infect, 2004. 132(2): p. 317-25.

Krieger, N., et al.Geocoding and monitoring of US socioeconomic inequalities in mortality and cancer incidence: does the choice of area-based measure and geographic level matter?: the Public Health Disparities Geocoding Project. Am J Epidemiol, 2002. 156(5): p. 471-82

Pour (beaucoup) plus:

Greenland, S. and H. Morgenstern, Ecological bias, confounding, and effect modification. Int J Epidemiol, 1989. 18(1): p. 269-74.

Les sources de donnes modernesInnombrables bases de donnes environnementales informatises (Sophie Valtat)

Nouveaux outils

Nouvelles mthodesSources de donnes satellitairesRsolution spatialeHaute : 0.5 1.8 m.Moyenne: 2 36 m.Basse : >36m.Rsolution temporelleRsolution spectrale

Voir http://www.asprs.orgNotamment:http://www.asprs.org/a/news/satellites/Satellite_Archives_v3.pdf

EXEMPLE : SPOT6

EXEMPLE : SPOT 6Image product resolution:Panchromatic: 1.5 mColour merge: 1.5 mMultispectral: 8 mSpectral bands, with simultaneous panchromatic and multispectral acquisitions:Panchromatic (450 745nm)Blue (450 525nm)Green (530 590nm)Red (625 695nm)Near-infrared (760 890nm)Footprint: 60km x 60kmResponsive satellite tasking, with 6 tasking plans per day, per satelliteCapacity to acquire up to 3 million km2. daily

CORINE LAND COVER

(crdit SoES)

Pesticides -> sant?Couvert santcouvert -> pesticides

Image satellitaireInfrence sur la nature du couvertInfrence sur les produits (pesticides) utiliss

In Ward,Env. Health Perspectives2000

Brody, J.G., et al., Using GIS and historical records to reconstruct residential exposure to large-scale pesticide application. J Expo Anal Environ Epidemiol, 2002. 12(1): p. 64-80.

Ward, M.H., et al., Identifying populations potentially exposed to agricultural pesticides using remote sensing and a Geographic Information System. Environ Health Perspect, 2000. 108(1): p. 5-12.

In Ward,Env. Health Perspectives2000Modles de diffusion

Brody, J.G., et al., Using GIS and historical records to reconstruct residential exposure to large-scale pesticide application. J Expo Anal Environ Epidemiol, 2002. 12(1): p. 64-80.Pollution par automobiless

English, P., et al., Examining associations between childhood asthma and traffic flow using a geographic information system. Environ Health Perspect, 1999. 107(9): p. 761-7.

In McKoneInternal reportLBNL, 2008

Ostfeld, R.S., G.E. Glass, and F. Keesing, Spatial epidemiology: an emerging (or re-emerging) discipline. Trends Ecol Evol, 2005. 20(6): p. 328-36.

Ostfeld, R.S., G.E. Glass, and F. Keesing, Spatial epidemiology: an emerging (or re-emerging) discipline. Trends Ecol Evol, 2005. 20(6): p. 328-36.

Lpre en mlansie

In Jim, Pacific Health Dialog, 2010

In Xiang,Envir. Research,2000

In Wei et col., Am. J. Trop. Med. Hyg., 84(3), 2011, pp. 497503

In Wei et col., Am. J. Trop. Med. Hyg., 84(3), 2011, pp. 497503

In Wei et col., Am. J. Trop. Med. Hyg., 84(3), 2011, pp. 497503

In Wei et col., Am. J. Trop. Med. Hyg., 84(3), 2011, pp. 497503SIG et maladies chroniques

tude SEARCH (507 DT1, 218 Tmoins):Liese, A.D., et al., Neighborhood level risk factors for type 1 diabetes in youth: the SEARCH case-control study. Int J Health Geogr, 2012. 11: p. 1

Ihrig, M.M., et col, A hospital-based case-control study of stillbirths and environmental exposure to arsenic using an atmospheric dispersion model linked to a geographical information system. Epidemiology, 1998. 9(3): p. 290-4.

Plans danalyse de facteurs environnementauxNiveau cologiqueNiveau individuelLes variables environnementales dpendent de lindividu (pollution estim un point)MultiniveauxDes variables mesures individuellement, soit environnementales, soit par questionnaire (tabac)ET des variables communes des groupes dindividuSchma cas-contrle : le plus gnral

Questions mthodologiques rcurrentesDonnes : Comment estimer la trajectoire de vieComment estimer les vraies expositions?Qualit du gocodage?Distinguer les cas o pas de rsultats (donc problme de puissance) de ceux o il y a des rsultats (un biais peut il les expliquer?)

Analyse :Autocorrlation spatialeModles multiniveaux

Autocorrlation spatiale

^ Moran, P. A. P. (1950). "Notes on Continuous Stochastic Phenomena". Biometrika 37 (1): 1723.Qualit du gocodagePeut tre critique.

`Nombreux travauxBonner, 2003Comparaison GPS et gocodage (ArcView 3.2, DynaMap)79% < 100m.3% > 800m.Bonner, M.R., et al., Positional accuracy of geocoded addresses in epidemiologic research. Epidemiology, 2003. 14(4): p. 408-12. Journaux spcialissHealth and Place IF=?Intl Journal of Health geographics IF=?Transactions in GISIF=?

Environmental Health Pespectives IF=7