60 likes | 71 Views
The French rolling census, ten years after its launch. Summary of the method. Each year a large census survey (9 million people): - all inhabitants of 1/5 of the small local units - 8% of the population of all the large towns On a cycle of five years : - the whole territory is covered
E N D
Summary of the method • Each year a large census survey (9 million people): • - all inhabitants of 1/5 of the small local units • - 8% of the population of all the large towns • On a cycle of five years : • - the whole territory is covered • - 70% of the population is surveyed • Each year, production, at all geographical levels of : • - official populations statistics, on a common base year • - detailed statistical census results, by weighting the survey data The French rolling census, ten years after its launch
A largely positive result • The census results are now updated each year. • Since 2008, yearly and on time • The census quality has improved:Processes are better controlled • - the concentration of resources of training, support and control over a smaller number of surveyed areas • - the accumulation of experience from year to year & the evolution of tools and guidelines • - a high level of public participation The results are not questioned • - positive studies throughout the “ramp-up” period (2004- 2008) • - favourable feedbacks from national and local users • - satisfactory quality of the building directory in large towns • The cost is controlled and smoothedover time The French rolling census, ten years after its launch
The rolling census is not a miraculous solution • The cost of the census remains high, because of the size of the annual surveys • total annual cost : 54 million euros, 0,83€/inh. • It has not been decreasing since 2004 • Census mobilizes a tenth of the INSEE manpower • the question of sustainability in the medium term is raised • The workload involved in processing and validating the data remains important • Some parameters of the statistical environment are evolving • Over a period of five years, some elements of the statistical calculation are unstable • The methodological teams are responsible for correcting the accidental defects in the basic census data. The French rolling census, ten years after its launch
Conclusion • Through regular collection whose quality is very satisfactory, • The French "rolling census" has undoubtedly fulfilled these initial aims : • Each year INSEE establishes official population figures for all administrative districts in the country, • and distributes many detailed data the quality of which is recognized. • However, this device has a high cost, mainly due to the very high number of households surveyed each year. • Moreover, the device, which is methodologically complex, requires a large data processing team on a permanent basis. The French rolling census, ten years after its launch
The French rolling census, ten years after its launch Thank you for your attention