This study was conducted by Leger Marketing through telephone interviews among a representative sample of 1519 English- or French-speaking Canadians, 18 years of age or older.
Canadians and Sleep
This study was conducted by Leger Marketing through telephone interviews among a representative sample of 1519 English- or French-speaking Canadians, 18 years of age or older.
PDF : https://leger360.com/wp-content/uploads/2002/01/020121eng.pdf