Seasonal adjustment is an important step of the official statistics business architecture and harmonisation of practices has proved to be key element of quality of the output. In this spirit, since the 90s, Eurostat has been playing a role in the promotion, development and maintenance of a software solution (Demetra family) freely available for seasonal adjustment in line with established best practices.

In 2008, ESS (European Statistical System) guidelines on SA have been endorsed by the CMFB and the SPC as a framework for seasonal adjustment. ESS guidelines cover all the key steps of the seasonal and calendar adjustment process and represent an important step towards the harmonisation of seasonal and calendar adjustment practices within the ESS and in Eurostat.

JDEMETRA+

by Eurostat and National Bank of Belgium

In case of any problems or questions, please contact the ESS Seasonal Adjustment helpdesk at thesace2016@gmail.com  or via

http://ec.europa.eu/eurostat/cros/content/ess-seasonal-adjustment-helpdesk

For info about the next ESTP course on DEMETRA+ and JDEMETRA+ for beginners and advanced users that will be held at Eurostat please consult here

Since the 2 of February 2015, users interested in performing seasonal adjustement according to the ESS guidelines are encouraged to use JDEMETRA+.