A spatio-temporal analysis of migration rates in the Emilia-Romagna Region


  • Angelina Mazzocchetti Regione Emilia-Romagna
  • Fedele Greco Alma Mater Studiorum - Università di Bologna




Migration – the movement of people from one location to another on any geographic scale – affects both the areas of origin and of destination. The aim of the present analysis is to understand how municipalities’ net migration rates are influenced by the demographic structure of the population. The analysis is conducted on the 341 municipalities within the Emilia-Romagna Region of Italy, by means of a spatio-temporal Bayesian hierarchical model. The need to take account for spatial dependence is demonstrated by comparing a spatial and a non-spatial model. Model hierarchy enables us to highlight province-specific temporal trends for both Italian and foreign flows: a decreasing trend is evident for Italians, while an increasing trend is observed for foreigners. At a spatial level, we show that the contribution of foreigners to population growth is higher than that of Italians migrants. Italian net migration rates are also negative in many municipalities that are losing their Italian population and increasing the number of foreigners residing there.


J. BESAG, J. YORK, A. MOLLIÈ, (1991), Bayesian image restoration, with two applications in spatial statistics,

“Annals of the Institute Statistical Mathematics”, 43, pp. 1-21.

R. J. CEBULA, (1979),The Determinants of Human Migration, Lexington, MA: Lexington Books.

R. J. CEBULA , J. E. PAYNE, (2005), Net migration, economic opportunity and the quality of life, 1999-

, “International Review of Economics and Business”, 52(2), pp. 245-254.

R. J. CEBULA, G. M. ALEXANDER, (2006), Determinants of net interstate migration, 2000-2004, “The

Journal of Regional Analysis and Policy”, 36(2), pp. 116-123.

P. CONGDON, (2010), Random-effects models for migration attractivity and retentivity: a bayesian methodology,

“Journal of the Royal Statistical Society”, Series A, 173, part 4, pp. 755-774.

A. FOTHERINGHAM, T. CHAMPION, C. WYMER, M. COOMBES, (2000), Measuring destination attractivity:

a migration example, “International Journal of Population Geography”, 6, pp. 391-422.

R. S. FRANKLIN, (2003), Domestic migration across regions, division and states: 1995 to 2000, Census

Special Reports, CENSR-7, Population Division , U.S. Census Bureau.

M. HOOGHE, A. TRAPPERS, B. MEULEMAN, T. REESKENS, (2008), “International Migration Review”,

(2), pp. 476-504.

EUROSTAT, (2009), Regional Yearbook 2009.

K. V. MARDIA, (1988), Multi-dimensional multivariate Gaussian Markov random fields with application

to image processing. “Journal of Multivariate Analysis”, 24, pp. 265-284.

OECD, (2009), International Migration Outlook: SOPEMI 2009.

REGIONE EMILIA-ROMAGNA, Servizio controllo strategico e statistica (a cura di) (2007),

Quadro demografico dell’Emilia-Romagna al 1/1/2007, Bologna, Clueb.

R. RETTAROLI, G. ROLI, A. SAMOGGIA, (2009), Evolution of survival at old ages during the 20th century

in Emilia Romagna, “Statistica”, anno LXIX (1).

A. ROGERS, F. WILLEKENS, J. LITTLE, J. RAYMER, (2002), Describing migration spatial structure, “Papers

in Regional Science”, 81, pp. 29-48.

D. J. SPIEGELHALTER, N. BEST, B. P. CARLIN, A. VAN DER LINDE, (2002), Bayesian measures of model

complexity and fit (with discussion), “Journal of the Royal Statistical Society”, Series B, 64,

pp. 583-639.

D. SPIEGELHALTER, A. THOMAS , N. BEST, (1998), WinBugs: Bayesian inference using Gibbs sampler,

Manual Version 1.2. Imperial College, London and Medical Research Council Biostatistics

Unit, Cambridge.

P. V. VOSS, (2007), Demography as a spatial social science, “Population research and policy review”,

, pp. 457-476.

M. WEST, J. HARRISON, (1997), Bayesian forecasting and dynamic linear models, Springer-Verlag,

New York.

C. K. WIKLE, L. M. BERLINER, N. CRESSIE, (1998), Hierarchical Bayesian space-time models, “Environmental

and Ecological Statistics”, 5, pp. 117-154.




How to Cite

Mazzocchetti, A., & Greco, F. (2011). A spatio-temporal analysis of migration rates in the Emilia-Romagna Region. Statistica, 71(1), 113–124. https://doi.org/10.6092/issn.1973-2201/3607