Methodology

Data sources

There are several data sources for this project, including the SMEP, census, and administrative data:

This project was run as a pilot; three jurisdictions signed on to participate:

Linkage rates

Through the Social Data linkage Environment,Footnote 8 the SMEP data (2005/2006 to 2015/2016) for those who paid or received child support were linked to T1FF (2006 to 2015).

High linkage rates were achieved between SMEP and T1FF. For example, the linkage rate from SMEP to T1FF (tax) was 92%. The linkage rates between SMEP to Census varied from 52% to 88% depending on the Census year and whether it was linked to payers or recipients. For instance, the linkage rates between SMEP and the 2011 Census long form were 52% for payers and 66% for recipients. The lower linkage rates for the census were likely due to the fact that there was only a 25% sample of Canadians reporting on the long form.

The SMEP data were linked separately to the T1FF and Census (long form) to increase sample sizes as the Census data only included 25% of Canadians. Merging across the three files (SMEP, T1FF and Census) would limit the T1FF information only to those who were also included in the Census long form. Table 1 shows the number of records linked between SMEP and T1FF for the three participating jurisdictions from 2006 to 2015. The linked records are for individuals over 15 years old. In addition, Table 1 illustrates that more recipients than payers from SMEP were linked to T1FF.

Table 2 shows the number of records linkedFootnote 9 between SMEP and the Census long form for 2006, 2011 and 2016. The long form Census is designed as a cross-sectional survey, including information on, for example, education levels, income, and details about home ownership and dwellings.

Table 1. The number of records linked between SMEP and T1FF, 2006 to 2015
Year Records linked from SMEP to T1FF
Payers enrolled in a MEP Recipients enrolled in a MEP
2006 42,131 48,861
2007 42,271 49,172
2008 42,169 49,358
2009 41,840 49,463
2010 41,314 49,381
2011 41,572 49,334
2012 41,146 49,122
2013 41,054 48,811
2014 41,004 48,588
2015 40,690 48,205
Table 2. The number of records linked between SMEP and the three Census long forms
Year Payers enrolled in a MEP Recipients enrolled in a MEP
2006 5,103 6,201
2011 4,077 5,268
2016 8,211 9,854

The non-SMEP comparison group

The SMEP comparison group included persons who were not enrolled in a MEP, but who indicated in the personal tax (T1FF) that they paid or received child support, or spousal support, or both. The SMEP comparison group was created using information from the LAD.Footnote 10 To create a SMEP comparison group, members of the SMEP cohortFootnote 11 were first removed from each of the eligible T1FF years (2006 to 2015). After the removal of SMEP cohort individuals, those who had paid or received support at any point between 2006 and 2015 were included in the comparison group. Members of the comparison group who filed their taxes in Newfoundland and Labrador, Nova Scotia, or Prince Edward Island at some point over the course of the ten-year period were included. Those who reported having paid or received support were included for the entire ten-year reference period, even if they paid or received in only one of the ten years. Table 3 shows the number of payers and recipients who were not enrolled in a MEP, but who indicated in T1FF that they paid support at any point between 2006 and 2015.

Table 3. The number of records for the comparison group, 2006 to 2015
Tax
Year
Payers not enrolled in a MEP Recipients not enrolled in a MEP
2006 6,546 9,256
2007 6,520 9,290
2008 6,495 9,302
2009 6,454 9,289
2010 6,354 9,235
2011 6,376 9,199
2012 6,274 9,129
2013 6,249 9,072
2014 6,201 9,013
2015 6,124 8,970

Limitations of the data

Due to the small sample sizes in the Atlantic provinces, along with the Census being a 25% sample of the population, some information produced from the SMEP to Census linkages could not be released because of risks related to information disclosures. Those that could be released, often required response categories to be collapsed to protect confidentiality and to control the risk of disclosure.

For the SMEP group of payers and recipients:

For non-SMEP data that included those claiming to pay or receive support but were not registered with a MEP (in T1FF and LAD), it should be noted that:

Due to these data limitations, these data cannot be generalized to the rest of Canada, and caution should be used in comparing these groups as there are many unknowns regarding the characteristics of these groups.