Bringing the individual back to small-area variation studies: A multilevel analysis of all-cause mortality in Andalusia, Spain.
Merlo, Juan LU
; Viciana-Fernández, Francisco J
and Ramiro-Fariñas, Diego
(2012)
In Social Science and Medicine
75(8).
p.1477-1487
- Abstract
- We performed a multilevel analysis (including individuals, households, census tracts, municipalities and provinces) on a 10% sample (N=230,978) from the Longitudinal Database of the Andalusian Population (LDAP). We aimed to investigate place effects on 8-year individual mortality risk. Moreover, besides calculating association (yielding odds ratios, ORs) between area socio-economic circumstances and individual risk, we wanted to estimate variance and clustering using the variance partition coefficient (VPC). We explicitly proclaim the relevance of considering general contextual effects (i.e. the degree to which the context, as a whole, affects individual variance in mortality risk) under at least two circumstances. The first of these... (More)
- We performed a multilevel analysis (including individuals, households, census tracts, municipalities and provinces) on a 10% sample (N=230,978) from the Longitudinal Database of the Andalusian Population (LDAP). We aimed to investigate place effects on 8-year individual mortality risk. Moreover, besides calculating association (yielding odds ratios, ORs) between area socio-economic circumstances and individual risk, we wanted to estimate variance and clustering using the variance partition coefficient (VPC). We explicitly proclaim the relevance of considering general contextual effects (i.e. the degree to which the context, as a whole, affects individual variance in mortality risk) under at least two circumstances. The first of these concerns the interpretation of specific contextual effects (i.e. the association between a particular area characteristic and individual risk) obtained from multilevel regression analyses. The second involves the interpretation of geographical variance obtained from classic ecological spatial analyses. The so-called "ecological fallacy" apart, the lack of individual-level information renders geographical variance unrelated to the total individual variation and, therefore, difficult to interpret. Finally, we stress the importance of considering the familial household in multilevel analyses. We observed an association between percentage of people with a low educational level in the census tract and individual mortality risk (OR, highest v. lowest quintile=1.14; 95% confidence interval, CI 1.08-1.20). However, only a minor proportion of the total individual variance in the probability of dying was at the municipality (M) and census tract (CT) levels (VPC(M)=0.2% and VPC(CT)=0.3%). Conversely, the household (H) level appeared much more relevant (VPC(H)=18.6%) than the administrative geographical areas. Without considering general contextual effects, both multilevel analyses of specific contextual effects and ecological studies of small-area variation may provide a misleading picture that overstates the role of administrative areas as contextual determinants of individual differences in mortality. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2967162
- author
- Merlo, Juan
LU
; Viciana-Fernández, Francisco J
and Ramiro-Fariñas, Diego
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Social Science and Medicine
- volume
- 75
- issue
- 8
- pages
- 1477 - 1487
- publisher
- Elsevier
- external identifiers
-
- wos:000308902200018
- pmid:22795359
- scopus:84864623642
- pmid:22795359
- ISSN
- 1873-5347
- DOI
- 10.1016/j.socscimed.2012.06.004
- language
- English
- LU publication?
- yes
- id
- 686b8f63-4c54-45d6-95c0-a2d57b5f37dd (old id 2967162)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/22795359?dopt=Abstract
- date added to LUP
- 2016-04-01 10:34:11
- date last changed
- 2022-04-04 19:20:43
@article{686b8f63-4c54-45d6-95c0-a2d57b5f37dd,
abstract = {{We performed a multilevel analysis (including individuals, households, census tracts, municipalities and provinces) on a 10% sample (N=230,978) from the Longitudinal Database of the Andalusian Population (LDAP). We aimed to investigate place effects on 8-year individual mortality risk. Moreover, besides calculating association (yielding odds ratios, ORs) between area socio-economic circumstances and individual risk, we wanted to estimate variance and clustering using the variance partition coefficient (VPC). We explicitly proclaim the relevance of considering general contextual effects (i.e. the degree to which the context, as a whole, affects individual variance in mortality risk) under at least two circumstances. The first of these concerns the interpretation of specific contextual effects (i.e. the association between a particular area characteristic and individual risk) obtained from multilevel regression analyses. The second involves the interpretation of geographical variance obtained from classic ecological spatial analyses. The so-called "ecological fallacy" apart, the lack of individual-level information renders geographical variance unrelated to the total individual variation and, therefore, difficult to interpret. Finally, we stress the importance of considering the familial household in multilevel analyses. We observed an association between percentage of people with a low educational level in the census tract and individual mortality risk (OR, highest v. lowest quintile=1.14; 95% confidence interval, CI 1.08-1.20). However, only a minor proportion of the total individual variance in the probability of dying was at the municipality (M) and census tract (CT) levels (VPC(M)=0.2% and VPC(CT)=0.3%). Conversely, the household (H) level appeared much more relevant (VPC(H)=18.6%) than the administrative geographical areas. Without considering general contextual effects, both multilevel analyses of specific contextual effects and ecological studies of small-area variation may provide a misleading picture that overstates the role of administrative areas as contextual determinants of individual differences in mortality.}},
author = {{Merlo, Juan and Viciana-Fernández, Francisco J and Ramiro-Fariñas, Diego}},
issn = {{1873-5347}},
language = {{eng}},
number = {{8}},
pages = {{1477--1487}},
publisher = {{Elsevier}},
series = {{Social Science and Medicine}},
title = {{Bringing the individual back to small-area variation studies: A multilevel analysis of all-cause mortality in Andalusia, Spain.}},
url = {{https://lup.lub.lu.se/search/files/1953212/3736618.pdf}},
doi = {{10.1016/j.socscimed.2012.06.004}},
volume = {{75}},
year = {{2012}},
}