To examine longitudinal trends in use of nutrition information among Canadians.
Population-based telephone and Internet surveys.
Representative samples of Canadian adults recruited with random-digit dialing sampling in 2004 (n = 2,405) and 2006 (n = 2,014) and an online commercial panel in 2008 (n = 2,001).
Sociodemographic predictors of label use, use of nutrition information sources, and nutrient content information.
Linear and logistic regression models to examine predictors and changes over time.
Food product labels were the most common source of nutritional information in 2008 (67%), followed by the Internet (51%) and magazines/newspapers (43%). The Internet was the only source to significantly increase during the study period (odds ratio = 1.39; P