Table 1.

The selected foods with their (weighted) percentage of never-consumers and daily consumers, Belgian National Food Consumption Survey 2004

	Percentage of never-consumers	Weighted percentage of never-consumers	Daily consumers
Water	1.9%	1.8%	79.0%
Cheese	6.7%	4.6%	23.3%
Fat Spread	31.7%	29.1%	39.3%

The BNFCS2004 made use of stratified sampling. To make the sample representative for the whole Belgian population (between 15 and 74 years) a weighting factor was calculated to compensate for the unequal sampling probability. The weighting factor can be used to convert the percentage of never-consumers towards the weighted percentage of never-consumers