How to maintain high quality in times of diminishing resources

Compilation of ITGS indices: New method implemented in DenmarkAnette Hertz, Head of section, Statistics Denmark (ahz@dst.dk)1Why interested in a new methodLooking for ways to improve the indicesA description of the new index compilation systemThe old vs the new indexWhat is next?

Agenda2Lack of documentation of the old systemThe system has had a sort of black box characterThe accuracy of the index have been questioned by our usersWhy interested in a new method33We wish to reduce volatility and know our compilation systemIndex calculation on more homogenous groups will reduce volatilityInspired by our Finnish collegues we decided to use company level dataThat is we do outlier detection at PSI level as well as the index computations

Looking for ways to improve the indices445

5All records with a value=1CN codes in chapter 98 and 99Industrial plants, vessels and aircraftsCN codes with supplementary units:Kg 90% sdt, kg/net eda, kg P2O5, kg NAOH, kg KOH, kg N, kg K2O, kg H2O2, GBq, gi F/S, ce/el, kg met.am., kg C5H1Exemptions from the indices66Outlier detection77Chained fisher index88From base index to total index and chaining99Handling volatile indices 1010The old index series started in 1995, the new will start in 2005 Indices at flow*CN*PSI*country instead of flow*CN*countryA separate outlier detection at micro data levelPublished total indices as well as 1- and 2-digit SITC, also 3-digit SITC for certain groups as opposed to BEC and KONJWe can exclude observations from the indices until they have been verifiedThe old vs the new index1111Calculation of terms of trade Integrate the validation of extreme outliers in the clerical workers daily tasksNew system hopefully in production from November 2014What is next?12Thank you for your attentionQuestions?