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Comparison of a spatial approach with the multilevel approach for investigating place effects on health: the example of healthcare utilisation in France

In English

Författare

Summary, in English

Study objective: Most studies of place effects on health have followed the multilevel analytical approach that investigates geographical variations of health phenomena by fragmenting space into arbitrary areas. This study examined whether analysing geographical variations across continuous space with spatial modelling techniques and contextual indicators that capture space as a continuous dimension surrounding individual residences provided more relevant information on the spatial distribution of outcomes. Healthcare utilisation in France was taken as an illustrative example in comparing the spatial approach with the multilevel approach. Design: Multilevel and spatial analyses of cross sectional data. Participants: 10 955 beneficiaries of the three principal national health insurance funds, surveyed in 1998 and 2000 on continental France. Main results: Multilevel models showed significant geographical variations in healthcare utilisation. However, the Moran's I statistic showed spatial autocorrelation unaccounted for by multilevel models. Modelling the correlation between people as a decreasing function of the spatial distance between them, spatial mixed models gave information not only on the magnitude, but also on the scale of spatial variations, and provided more accurate standard errors for risk factors effects. The socioeconomic level of the residential context and the supply of physicians were independently associated with healthcare utilisation. Place indicators better explained spatial variations in healthcare utilisation when measured across continuous space, rather than within administrative areas. Conclusions: The kind of conceptualisation of space during analysis influences the understanding of place effects on health. In many contextual studies, viewing space as a continuum may yield more relevant information on the spatial distribution of outcomes.

Avdelning/ar

Publiceringsår

2005

Språk

Engelska

Sidor

517-526

Publikation/Tidskrift/Serie

Journal of Epidemiology and Community Health

Volym

59

Issue

6

Dokumenttyp

Artikel i tidskrift

Förlag

BMJ Publishing Group

Ämne

  • Public Health, Global Health, Social Medicine and Epidemiology

Status

Published

Forskningsgrupp

  • Social Epidemiology

ISBN/ISSN/Övrigt

  • ISSN: 1470-2738