About the data

The profile for the NHS Special Collection for 13 Indian reserves and Indian settlements in Northern Ontario provides information from a special data collection following the 2011 National Household Survey. The census and NHS were not completed during the regular collection period due to forest fires in some communities of Northern Ontario. The NHS Special Collection for 13 Indian reserves and Indian settlements in Northern Ontario (October 2011) was a voluntary survey in which all households in these 13 areas received the questionnaire used to enumerate canvasser areas in the 2011 NHS.

The survey provides demographic, social and economic information, covering such topics as: Aboriginal peoples, age and gender, families and households, language, mobility, ethnic origin, religion, labour, education, income and housing.

These data are not included in the already disseminated census counts or NHS estimates for geographies that include these Indian reserves or Indian settlements.

In these 13 Indian reserves and Indian settlements, data were collected for private dwellings occupied by usual residents. A private dwelling is a dwelling in which a person or a group of persons permanently reside. Data were not collected for collective dwellings, which are dwellings used for commercial, institutional or communal purposes, such as a hotel, a hospital or a work camp.

Confidentiality disclosure control for the NHS Special Collection for 13 Indian reserves and Indian settlements in Northern Ontario

The disclosure control rules applied to all NHS estimates have also been applied to the data available from the NHS Special Collection for 13 Indian reserves and Indian settlements in Northern Ontario. The number of actual records used to derive any number in a table had to meet a minimum criterion. For a table cell where this criterion was not met, the number was replaced by a zero. Due to this disclosure control, subtotals will not necessarily aggregate to the total.

As well, users should note that random rounding has also been applied to the data. The values including totals were randomly rounded either up or down to a multiple of 5 or 10. As a result, totals do not necessarily match the sum of individual values since totals and subtotals were independently rounded.

In addition to random rounding, area and data suppression has been applied to further protect the confidentiality of individual respondents' personal information. Area and data suppression results in the deletion of all information for geographic areas with populations below a specified size. Areas with a population of less than 40 persons were suppressed.

Finally, statistics (such as mean, sum, median, percentile, ratio or percentage) are not subject to random rounding. However, for all quantitative variables, a statistic is suppressed if the number of actual records used in the calculation (not rounded or weighted) is less than 4. For more information, refer to the 2011 NHS Data Quality and Confidentiality Standards and Guidelines (Public).

Income data suppression

For these 13 areas, income distributions and related statistics are suppressed if the population in the area is less than 250, or if the number of private households is less than 40.

Total income, after-tax income and earnings distributions have been suppressed where the estimated total number of units (persons, families or households) is less than 250. All suppressed cells and associated averages and medians have been replaced with zeros or symbols.

In all cases, suppressed data are included in the appropriate higher aggregate subtotals and totals.

For information on income data quality, refer to the Income Reference Guide, National Household Survey, Catalogue no. 99-014-X2011006.

Quality indicators

For the profile for the NHS Special Collection for 13 Indian reserves and Indian settlements in Northern Ontario, the global non-response rate (GNR) is used as an indicator of data quality. This indicator combines complete non-response (household) and partial non-response (question) into a single rate. The value of the GNR is presented to users in the profile for each area. The threshold used for data suppression is a GNR of 50%; therefore, the data are suppressed for any area with a GNR of 50% or higher. For more information, please refer to the National Household Survey User Guide, 2011, Catalogue no. 99-001-X2011001.