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Ottawa Group on Price Indicies

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Purpose and organisation of the Ottawa Group:

The International Working Group on Price Indices, known as the "Ottawa Group", was formed in 1994 to provide a forum for specialist academics and practitioners to share their experiences and knowledge and discuss research on crucial problems related to the measurement of price change. While theoretical issues are covered in the discussions, the Group focuses primarily on applied research, particularly, but not exclusively, in the area of consumer price indices. The Group examines the advantages and disadvantages of various concepts, methods and procedures in the context of realistic operational environments, supported by concrete examples whenever possible. Participants are specialists and practitioners who work for or advise statistical agencies in different countries or international organizations. The Group meets every other year, alternating with the meetings of the Group of Experts on Consumer Price Indices, which are jointly organized by the Economic Commission for Europe (ECE) and the International Labour Organization (ILO).

Point of contact

Andrew Tomadini
Secretariate, Ottawa Group
Australian Bureau of Statistics
Locked Bag 10
Belconnen ACT 2616
Telephone: (61) 2 6252 7094

The Ottawa Group has a steering committee, which ensures the continuity and evolution of the Group's activities and coordination with other international activities on price statistics, such as the meetings of the Group of Experts on Consumer Price Indices, and the Intersecretariat Working Group on Price Statistics. The steering committee comprises representatives of national statistical offices, academics and other experts in the field of price statistics, a representative of the organizing committee for the expert meetings on consumer price indices (CPIs), a representative of the Intersecretariat Working Group, and representatives of the agencies that have recently hosted or will host meetings of the Ottawa Group1. The representative of the Australian Bureau of Statistics currently serves as Executive Secretary of the Group. The membership of the steering committee is reviewed at each meeting of the Ottawa Group.

The meetings of the Ottawa Group are divided into sessions, each devoted to one clearly defined topic, with a designated moderator who is also responsible for producing a summary of the discussions. The summary includes the Group's recommendations, when a clear consensus emerges from the discussion, or, when this is not the case, a summary of the varying opinions, with balanced commentary.

Ottawa Group meetings also include Poster Sessions2. Poster sessions involve the presentation and discussion of topics in small groups. Poster sessions facilitate knowledge-sharing in a less formal environment.

The host agency provides facilities and administrative support for the meetings. Copies of each meeting's proceedings and information about the Ottawa Group are available from the Group's website ( The steering committee may also decide to edit and periodically release compendiums on selected topics through the website. The Executive Secretary is responsible for maintaining the website.

Year organized



Researchers working for or advising national statistical offices have attended meetings of the Group. Among the countries that have been represented are Australia, Austria, Brazil, Canada, Chile, China, Denmark, Finland, France, Germany, Iceland, Indonesia, Israel, Italy, Luxembourg, Japan, Malaysia, Mexico, the Netherlands, New Zealand, Norway, Poland, Portugal, the Republic of Korea, Singapore, South Africa, Spain, Sweden, Switzerland, Thailand, the United Kingdom of Great Britain and Northern Ireland, the United States of America and Viet Nam. Representatives of international organizations, such as Eurostat, the statistics department of the International Monetary Fund, ILO, ECE, the European Central Bank and the Organization for Economic Cooperation and Development, have also attended.


The Group has met on the following 15 occasions:
Ottawa, 31 October-3 November 1994
Stockholm, 15-17 November 1995
Voorburg, 16-18 April 1997
Washington, D.C., 22-24 April 1998
Reykjavik, 25-27 August 1999
Canberra, 2-6 April 2001
Paris, 27-29 May 2003
Helsinki, 23-25 August 2004
London, 14-16 May 2006
Ottawa, 9-12 October 2007
Neuchåtel, 27-29 May 2009
Wellington, 4-6 May 2011
Copenhagen, 1-3 May 2013
Tokyo, 20-22 May 2015
Eltville am Rhein, 10-12 May 2017
Rio de Janeiro, 8-10 May 2019

Recent activities:

Since its last report to the Statistical Commission in 2016 (E/CN.3/2016/29), the Ottawa Group has met once, in May 2017, in Eltville, Germany. The meeting was attended by 121 participants: 62 staff from national statistics offices; 13 staff from academic organizations; 23 staff from international organizations; and the remaining 23 participants from central banks and are experts in price indexes.

Fundamental problems of price measurement remained the focus of the most recent meeting. The Ottawa Group considered various topics, including: 'big data' sources and methods to compile Consumer Price Indexes (CPIs); developments in the use of transaction (scanner) data; the compilation of property price indexes; an update of progress to produce the new CPI manual; and index theory and new practices. Discussions focused on the theoretical and methodological considerations of each topic and the practical implementation of those theories and methods in the context of a national statistical office.

In total, 31 papers were presented for discussion and 3 papers were submitted as room documents. The meeting papers were well received by participants, and discussions focused on various topics relating to concepts, methods and compilation procedures for price indices. The key points that emerged from each session will be provided in the full report on the 15th meeting of the Ottawa Group, which will be available on the Group’s website.

Planned activities

The next meeting of the Ottawa Group will be hosted by Fundacao Getulio Vargas (FGV) Brazil and will be held in May 2019. The agenda of the meeting is still open for discussion and is dependent on work programmes and future priorities. Among the possible topics for discussion are:
(a) New data sources (e.g., scanner/transaction data, big data, quality adjustments);
(b) Challenging areas of measurement (e.g., services);
(c) Conceptual frameworks (for target indices and for reconciling upper and lower levels of index construction);
(d) Treatment of special cases (e.g., strongly seasonal commodities, zero prices).

Reporting to the UN Statistical Commission

1 A full list of the Steering Committee members can be found in Attachment 1.
2 The 13th meeting, held in Copenhagen, was the first meeting at which poster sessions were held.

Last updated 17 July 2019