TABLE 3.
Standardized prevalences of inadequate nutrient intakes by household food security status in males and females ≥9 y in Canada (2004 CCHS 2.2) and the United States (2003–2006 NHANES), assuming no authorization for food stamps or WIC among those in US households1
| Canada, % (SE) |
United States, % (SE) |
Between-country comparison,2
P |
|||||
| Food secure | Food insecure | Food secure | Food insecure | Difference between food-secure groups | Difference between food-insecure groups | Difference between food-insecure and food-secure groups | |
| Vitamin A | 36 (1.88) | 45 (6.60) | 47 (2.20) | 51 (4.31) | <0.01 | 0.47 | 0.48 |
| Vitamin C | 16 (1.15) | 16 (6.16) | 39 (1.90) | 32 (4.43) | <0.01 | 0.48 | 0.33 |
| Folate | 13 (1.35) | 26 (5.10) | 10 (0.98) | 16 (3.19) | 0.09 | 0.89 | 0.23 |
| Calcium | 50 (1.36) | 66 (4.09) | 49 (1.94) | 51 (3.90) | 0.65 | < 0.01 | 0.21 |
| Magnesium | 39 (1.36) | 60 (5.38) | 59 (1.87) | 61 (3.73) | <0.01 | 0.94 | <0.01 |
| Zinc | 13 (1.52) | 29 (5.13) | 11 (1.11) | 16 (3.89) | 0.35 | 0.04 | 0.08 |
The food-secure and food-insecure groups in both countries were standardized to the overall US population on the basis of household education and living arrangements. Prevalences of inadequate intakes were computed by using the Estimated Average Requirement cut-point approach. Predicted marginals were computed to estimate prevalences of inadequate nutrient intakes, assuming no authorization for food stamps or WIC among the US sample. CCHS 2.2, Canadian Community Health Survey, cycle 2.2; WIC, Special Supplemental Nutrition Program for Women, Infants, and Children.
P value were calculated by using t tests and are for the difference between the 2 countries in the prevalences of inadequacy among individuals in food-secure households, in food-insecure households, and in food-secure vs. food-insecure households, respectively.