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Home « Who we are « People « V « VALLÉE Julie


Full time researcher CNRS in social and health geography
Laboratory Géographie-cités, Paris-Aubervilliers, France


I am conducting research devoted to spatial mechanisms of social (health) inequalities in urban areas. I am exploring how social inequalities are linked with people’s daily mobility, with urban segregation throughout the day, and more broadly with the ’daycourse of place’.

Keywords: Social inequalities; Neighborhood effects ; Segregation ; Daily mobility ; Resources accessibility; Area-based interventions; Health Inequalities


* Associate scientist CNRS, UMR 8504 Géographie-Cités, Paris, from 2010
* Visiting scholar in Department of Social and Preventive Medicine in Université de Montréal, January 2013 - July 2015.
* Post-doctoral student , Research team on the social determinants of health and healthcare (UMRS 707), INSERM, Paris, 2009-2010
* PhD student, University Paris Ouest la Défense and Institut de Recherche pour le Développement, Vientiane (Lao PDR), 2004-2008


* Habilitation à Diriger les Recherches, Université Paris 1 Panthéon-Sorbonne, 2019
* PhD in Geography, University of Paris Ouest la Défense, 2008
* Master in Health Geography, University of Paris Ouest La Défense, 2004
* Master in GIS and Remote Sensing, University of Toulouse, 2002


Mobiliscope : Cities around the clock
Mobiliscope is a free and open-source web mapping platform for the interactive exploration of cities around the clock. Using large origin-destination surveys, the Mobiliscope displays maps and segregation indices in 55 city regions (59 in France and 6 in Canada) over the 24h a day.

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RelatHealth : A relational approach to place effects on health in urban areas
In Paris (France) and Montreal (Canada), we adopt a relational approach to place effects considering people’ place experiences though regular activity locations and perceived neighborhoods. The project aims at exploring the spatial mechanisms involved in social inequalities in health through the following question: how people’s place experiences shape social inequalities in accessibility, and ultimately neighbourhood effects on health?


Scientific programs
* CoVprehension : Understanding the current COVID-19 epidemic. One question, one model.
* MobiTIC : Mesurer les mobilités et présences des personnes à l’aide des TIC
(Partners : Ifsttar; Orange Lab; Insee; Géographie-cités)
* ISIS : Interdisciplinary Study of Inequalities in Smoking - Montréal (coordinated by Katherine Frohlich - UdeM)
* RECORD : Residential Environment and CORonary heart Disease - Paris (coordonnated by Basile Chaix - Inserm)
* SIRS : Santé, Inégalités et Ruptures Sociales - Paris (coordinated by Gwenn Menvielle and Pierre Chauvin - Inserm)
* CURHA : Understanding the role of contrasting urban contexts in healthy aging & HANC : Healthy Aging and Networks in Cities - Montréal, Paris, Luxembourg (Partners : UdeM; LISER; Inserm; IPHC; Géographie-cités)(

* Institut de Recherche en santé publique de l’Université de Montréal (IRSPUM)
* Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM)
* Spatial Health Research Lab à Montréal (SphereLab)
* Equipe EQUITY "Embodiment, social ineQualities, lifecoUrse epidemiology, cancer and chronIc diseases, intervenTions, methodologY" du pôle Épidémiologie et analyses en santé publique (EQUITY; Inserm -Université Paul Sabatier)
* Équipe de recherche en Épidémiologie Sociale de l’Institut Pierre Louis d’Epidémiologie et de Santé Publique (ERES; Inserm - Université Pierre et Marie Curie)
* Équipe de recherche "Environnement, Mobilité et Santé" de l’Institut Pierre Louis d’Epidémiologie et de Santé Publique (NEMESIS; Inserm - Université Pierre et Marie Curie)


* Maxime Guinepain - ongoing. "De l’appartenance sociale aux pratiques spatiales. Mobilités et lieux de vie des petites classes moyennes". In co-supervision with Jean Rivère
*Catherine Mangeney - ongoing "Les enjeux des zonages prescriptifs de l’action publique : l’exemple des zonages déficitaires en médecins généralistes".
*Anaïs Dubreuil - 2020 "Everyday spatial practices during the transition to adulthood: biographical trajectories and activity spaces of young adults living in Montreal. In co-supervision with Lena Sanders. Manuscript in French
*Marion Patte - 2020 Environnement résidentiel et Vieillissement en Santé au Luxembourg et en Europe. In co-supervision with Lena Sanders


Vallée J, Shareck M, Le Roux G, Kestens Y, Frohlich K. 2020. Is accessibility in the eye of the beholder? Social inequalities in spatial accessibility to health-related resources in Montréal, Canada. Social Science & Medicine. texte HAL lien éditeur

Fernandes A, van Lenthe F, Vallée J, Sueur C, Chaix B. 2020. Linking physical and social environments with mental health in old age: a multisensor approach for continuous real-life ecological and emotional assessment. Journal of Epidemiology & Community Health. texte HAL lien éditeur

Delage M, Baudet-Michel S, Fol S, Buhnik S, Commenges H, Vallée J. 2020. Retail decline in France’s small and medium-sized cities over four decades. Evidences from a multi-level analysis. Cities. lien éditeur

Glenn N, Frohlich K, Vallée J. 2020. Socio-spatial inequalities in smoking among young adults: what A ‘Go-along’ study says about local smoking practices. Social Science & Medicine. lien éditeur

Perchoux C, Brondeel R, Wasfi R, Klein O, Caruso G, Vallée J, Klein S, Thierry B, Dijst M, Chaix B, Kestens Y, Gerber P. 2019. Walking, trip purpose, and exposure to multiple environments: A case study of older adults in Luxembourg. Journal of Transport & Health. Vol 13, pp 170-184. lien éditeur

Vallée J. 2018. Urban isolation and daytime neighborhood social composition from twitter data. PNAS - Proceedings of the National Academy of Sciences (letter). 115(51). open access journal

Shareck M, Datta G D, Vallée J, Kestens Y, Frohlich KL. 2018. Is Smoking Cessation in Young Adults Associated With Tobacco Retailer Availability in Their Activity Space? Nicotine and Tobacco Research. journal

Vallée J, 2017. The daycourse of place. Social Science & Medicine. Vol 194, pp 177-181. open access journal

Vallée J, 2017. Challenges in targeting areas for public action. Target areas at the right place and at the right time. Journal of Epidemiology and Community Health. 71(10), pp. 945-946. open access journal

Chaix B, Duncan D, Vallée J, Vernez-Moudon A, Benmarhnia T, Kestens Y, 2017. The "residential" effect fallacy in neighborhood and health studies: formal definition, empirical identification, and correction Epidemiology 28(6), pp 789–797. open access journal

Le Roux G, Vallée J, Commenges H, 2017. Social segregation around the clock in the Paris region, Journal of Transport Geography, 59, pp 134-145. open access journal.

Kestens Y, Chaix B, Gerber P, Desprès M, Gauvin L, Klein O, Klein S, Köppen B, Lord S, Naud A, Payette H, Richard L, Rondier P, Shareck M, Sueur C, Thierry B, Vallée J, Wasfi R, 2016. Understanding the role of contrasting urban contexts in healthy aging: An international cohort study using wearable sensor devices (The CURHA study protocol), BMC Geriatrics. 16:96. journal

Shareck M, Kestens Y, Vallée J, Datta G, Frohlich K, 2016. The added value of accounting for activity space when examining the association between tobacco retailers and smoking among young adults. Tobacco Control 25:4 406-412. journal

Vallée J, Le Roux G, Chaix B, Kestens Y, Chauvin P, 2015. The ‘constant size neighbourhood trap’ in accessibility and health studies. Urban Studies. Vol. 52(2) 338–357. open access journal

Frohlich K, Shareck M, Vallée J, Abel T, Agouri R, Cantinotti, M, Daniel M, Dassa C, Datta G, Gagné T, Leclerc B.S, Kestens Y, O’Loughlin J, Potvin L, 2015. Cohort Profile: The Interdisciplinary Study of Inequalities in Smoking (ISIS), International Journal of Epidemiology. (2017) 46 (2): e4. journal

Vallée J, Shareck M, 2014, Can we claim spatial misclassification of neighborhood exposures without any reference to people? Re: Examination of How Neighborhood Definition Influences Measurements of Youths’ Access to Tobacco Retailers- A Methodological Note on Spatial Misclassification. American Journal of Epidemiology - Letter to the Editor 179(5): 660–662. journal

Chaix B, Méline J, Duncan S, Jardinier L, Perchoux C, Vallée J, Merrien C, Karusisi N, Lewin A, Brondeel R, Kestens Y, 2013. Neighborhood environments, mobility, and health: Towards a new generation of studies in environmental health research. Revue d’Epidemiologie et de Santé Publique. 61 Suppl 3: 139-45. journal

Vallée J, Chauvin P, 2012. Investigating the effects of medical density on health-seeking behaviours using a multiscale approach to residential and activity spaces. Results from a prospective cohort study in the Paris metropolitan area, France. International Journal of Health Geographics 11:54. journal

Vallée J, Cadot E, Roustit C, Parizot I, Chauvin P, 2011. The role of daily mobility in mental health inequalities: the interactive influence of activity space and neighbourhood of residence on depression. Social Science & Medicine, 73 (8), pp 1133-1144. open access journal

Vallée J, Cadot E, Grillo F, Parizot I, Chauvin P, 2010. The combined effects of perceived activity space and neighbourhood of residence on participation in preventive health-care activities. The case of cervical screening in the Paris metropolitan area (France). Health & Place, 16(5), 838-852. open access journal

Vallée J , Thaojaikong T, Moore C E, Phetsouvanh R, Richards A L, Souris M, Fournet F, Salem G, Gonzalez JP, Newton P, 2010. Contrasting spatial distribution and risk factors for past infection with scrub typhus and murine typhus in Vientiane City, Lao PDR. Plos Neglected Tropical Diseases 4(12). journal

Vallée J, Dubot-Pérès A, Ounaphom P, Sayavong C, Bryant J, Gonzalez JP, 2009. Spatial distribution and risk factors of dengue and Japanese encephalitis virus infection in urban settings: The case of Vientiane, Lao PDR. Tropical Medicine & International Health, 14 (9), pp 1134-1142. open access journal

Barennes H, Simmala C, Odermatt P, Thaybouavone T, Vallée J, Newton P, Vongprachan P, Martinez-Useel B, Vongprachan P, Strobel M, 2009. Postpartum traditions and nutrition practices among urban Lao women and their infants" in Vientiane, Lao PDR. European Journal of Clinical Nutrition, 63(3), pp 323-31. journal

Vallée J, Souris M, Fournet F, Bochaton A, Mobillion V, Peyronnie K, Salem G, 2007. Sampling in health geography: reconciling geographical objectives and probabilistic methods. An example of a health survey in Vientiane, Lao PDR. Emerging Themes in Epidemiology, 4:6. journal

My Publications
My open archives

Updated on : 14 April 2021


Géographie-cités 2011, All rights reserved