2021 Census data quality indicators
Release date: April 27, 2022 Updated on: July 13, 2022
To enable users to conduct a detailed evaluation of the data quality and to determine the relevance of the data to their needs, quality indicators accompany the 2021 Census of Population data outputs. The purpose of the data quality indicators is to present the risk of known and measurable potential errors at the time of dissemination. For further information on data quality, refer to the Guide to the Census of Population, 2021: Data quality evaluation.
| Digit | Description | Flag | Flag description |
|---|---|---|---|
| First (0XXXX) |
Incomplete enumeration flag | 0 | Default. Not applicable. |
| 1 | Incompletely enumerated reserve or settlement (suppressed). | ||
| 2 | Excludes census data for one or more incompletely enumerated reserves or settlements. | ||
| Second (X0XXX) |
Short-form data quality flag | 0 | Default. Data quality index showing a short-form total non-response rate lower than 10%. |
| 1 | Data quality index showing a short-form total non-response rate higher than or equal to 10%, but lower than 20%. | ||
| 2 | Data quality index showing a short-form total non-response rate higher than or equal to 20%, but lower than 30%. | ||
| 3 | Data quality index showing a short-form total non-response rate higher than or equal to 30%, but lower than 40%. | ||
| 4 | Data quality index showing a short-form total non-response rate higher than or equal to 40%, but lower than 50%. | ||
| 5 | Data quality index showing a short-form total non-response rate higher than or equal to 50% (use with caution). | ||
| 9 | Short-form data suppressed to meet the confidentiality requirements of the Statistics Act. | ||
| Third (XX0XX) |
Short-form income confidentiality suppression flag | 0 | Default. Short-form income data not suppressed. |
| 9 | Short-form income data suppressed to meet the confidentiality requirements of the Statistics Act. | ||
| Fourth (XXX0X) |
Long-form data quality flag | 0 | Default. Data quality index showing a long-form total non-response rate lower than 10%. |
| 1 | Data quality index showing a long-form total non-response rate higher than or equal to 10%, but lower than 20%. | ||
| 2 | Data quality index showing a long-form total non-response rate higher than or equal to 20%, but lower than 30%. | ||
| 3 | Data quality index showing a long-form total non-response rate higher than or equal to 30%, but lower than 40%. | ||
| 4 | Data quality index showing a long-form total non-response rate higher than or equal to 40%, but lower than 50%. | ||
| 5 | Data quality index showing a long-form total non-response rate higher than or equal to 50% (use with caution). | ||
| 9 | Long-form data suppressed to meet the confidentiality requirements of the Statistics Act. | ||
| Fifth (XXXX0) |
Long-form income confidentiality suppression flag | 0 | Default. Long-form income data not suppressed. |
| 9 | Long-form income data suppressed to meet the confidentiality requirements of the Statistics Act. |
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