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Persons living in institutions and on First Nations reserves were excluded from the survey. PALS followed the groundwork laid by the Health and Activity Limitation Survey (HALS) in 1991 and the Participation and Activity Limitation Survey of 2001. The data for HALS and PALS 2001 could not be compared because of significant differences in their sampling plans, the operational definition of their target population and the content of their questionnaires.
The purpose of the Canadian Survey on Disability (CSD) is to provide information about Canadian adults whose daily activities are limited because of a long-term condition or health-related problem. This information will be used to plan and evaluate services, programs and policies for adults with disabilities to help enable their full participation in Canadian society.Previous surveys dedicated to providing information on persons with disabilities are the Health and Activity Limitations Survey.