[Results from nutritional surveys; their value for nutrition- and food science (author's transl)]

Various survey methods have been used in estimating the dietary intake of individuals, families and other groups. Every method has its advantages and disadvantages, and its practical, financial and technical difficulties. The choice is also limited by the quality of the population studied. The nutrient level is shown by many parameters: Cholesterol level, thiamine intake, uric acid level, ascorbic acid level in plasma, SO2-intake. Field studies were done with different groups of the population: pupils, elderly people living in homes, heavy workers, sedentary workers, clerks, policemen, sportsmen, students. SO2-intake is related with thiamin intake. It is very different from group to group (0,05--47,7 mg)/thiamin.