Links included in this guide where you can find survey data:
RDCs or Research Data Centres are part of an initiative by Statistics Canada, providing researchers with access, in a secure university setting, to microdata, from population to household surveys. RDCs are located throughout the country, so researchers do not need to travel to Ottawa to access Statistics Canada microdata.
If the data you are looking for is only available through the RDC (because it is only available in a master file), then you will have to apply to gain access to the RDC for your research. For more information on how to apply for access, a list of what data is available in the RDC, and other information, please review RDC Program.
A survey data set is the end numeric or textual result of a structured study of a sample of a population being studied, generally containing multiple variables for each respondent. Survey data sets are comprised of raw data, allowing end users to analyze the data to support or refute their own hypotheses.
There are two very common types of survey: cross-sectional and longitudinal. Cross-sectional studies take a snapshot (cross-section) of information on the subjects at a single point in time. Longitudinal studies involve conducting several observations of the same subjects over a period of time, sometimes lasting years or decades.
While longitudinal studies can potentially offer more relevant or detailed results, they are also more prone to contain information which can identify individual respondents. Because of this, many Statistics Canada public use microdata files of longitudinal surveys have been modified so that longitudinal results are not possible. However, longitudinal analysis by approved researchers may still done via Statistics Canada's Research Data Centre program.
Where to look for Canadian survey data really depends on what form of the data you need. There are three major forms of survey data:
1. Aggregate Data:
Aggregate data is statistical summaries of the raw, survey data. Aggregate data is produced to provide access to data that cannot be released as microdata, and to organize statistics into data tables for those who just want some basic facts or numbers resulting from the survey. For Canadian Statistics, you would go to the Statistics Canada website and its CANSIM portal for aggregate Canadian survey data.
2. Master Files
Master files are the opposite to aggregate data. For each survey conducted by an author division, a master file is constructed which contains most of the original information collected during the survey interview with the subject, as well as derived variables added to the dataset afterwards. This is the most detailed data you can get. For Canadian master files, you will have to go through the Research Data Centres or RDCs.
3. Public Use Microdata Files (PUMFs)
Before each PUMF is released,Statistics Canada performs modifications to the corresponding master file to ensure that the risk of breaching confidentiality has been removed. Since the results of any analysis performed do not have to be scrutinized before they are released, the file is considered "public." For Canadian PUMFs, the easiest way to access them is through our data repositories, Abacus.
The two major survey data repositories, Abacus and ICPSR, provide very powerful tools, Nesstar and SDA respectively, for better experience of searching and analyzing data online without the hassle of downloading a whole, huge dataset, conducting some analysis on your computer and then finding out this dataset is not right for you! That said, with these powerful tools, you will enjoy much more flexibility, quickness and easiness in exploring survey data.
1. Search in Abacus and Odesi
You can run a simple search in Abacus or use advanced search, in which you can specify various details, such as title and date. Further, one feature that is really convenient is to search by variable name, when you hope to dig deeper into a survey and see what is covered. However, please note that searching by variable only applies to more recent major surveys.
Advanced Search Interface in Abacus
Alternatively, you may try this website Odesi, a powerful survey search tool to search up to the variable level. As shown in below, the interface is nice, allowing you to create some complicated searches. Please keep in mind, however, once you figure out what survey you need, you'll have to come back to Abacus to access it.
Search Interface of Odesi
3. Search and Analyze Data using ICPSR and SDA
Please review the Help on ICPSR's website for guidance on searching, downloading and analyzing data. Additionally, ICPSR offers a variety of videos on youtube, where you will find answers to many of your questions, including how to use SDA to analyze data.
*For more detailed information and examples, check out the Finding Survey Data Workshop Exercise Handout.