
Article 1 
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Article 2 
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Article 3 
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Article 4 
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Article 5 
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Article 6 
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ANNEX
The quality report should contain quality-related data and metadata in line with the following quality criteria and statistical concepts.
If a particular statistical concept is not relevant to a statistical operation, that concept should remain in the quality report, accompanied by the words ‘Not applicable’.

1. 
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2. 
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3. 
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4. 
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5.  5.1. 
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 5.2. 
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 5.3. 
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6.  6.1. 
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 6.2. 
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 6.3.  6.3.1. 
Description of divergence between the frame population and the target population.


— Frequency and timing of frame updates.
— Errors due to discrepancies between the sampling frame and the target population and sub-populations (over-coverage, under-coverage, misclassifications).
 6.3.2. 
Description of errors that occur during data collection, causing recorded values of variables to differ from true values.


— Description of efforts made in questionnaire design and testing (including addressing errors arising from multi-mode and/or multi-source data collection).
— Description of interviewer training.
— Proxy interview rates.
 6.3.3. 
Description of:


— Available characteristics of non-respondents.
— Unit and item non-response rates.
— Substitution rates.
— Gross sample size (initial sample size), number of eligible units and net sample size, including substitution units (achieved sample size)
 6.3.4. 
Description of any error in processing and its impact on final data collection results, arising from faulty implementation of correctly planned implementation methods.


— Description of quality checks and the data editing process.
— Description of imputation procedures.
— Imputation rates.
 6.3.5. 
Where applicable: description of error arising from domain-specific models needed to define the target of estimation.
 6.4. 
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 6.5. 
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 6.6. 
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7. 
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8. 
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9. 
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10. 
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11. 
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12. 
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