ANNEX 2Modalities and structure of the quality reports to be provided by Member States
GENERAL DESCRIPTION
A general description shall include the following elements, where appropriate:
A.Sources, coverage and periodicity
Identification of the source of the data,
Coverage (geographical, NACE, enterprise size),
Reference dates,
Periodicity of national publication,
Definition of the statistical unit.
B.Sample survey
B.1.Sampling design
Base used for the sample,
Sampling design,
Retention/renewal of sampling units,
Sample size,
Stratification.
B.2.Weighting
Brief description of the weighting method,
Weighting dimensions.
B.3.Data collection
Brief description of the data collection method(s).
C.Other sources
Brief description of the source(s) including:
Maintenance agency,
Updating frequency,
Rules for clearance (of outdated information),
Voluntary/compulsory reporting and sanctions.
D.Disclosure rules
Brief description of when data have to be deleted for reasons of confidentiality.
E.Seasonal adjustment
Brief description of seasonal adjustment procedures, in particular with regard to the European Statistical System guidelines on seasonal adjustment which have been endorsed and supported by the SPC.