The Norton scale was devised in 1960 as an additive scale to facilitate the prediction and prevention of pressure sore development. The scale has been used both in the original version and in modified versions both in practice and as an instrument in nursing research. In a previous study the reliability had been analysed. The present investigation comprises 501 patients who were examined weekly by registered nurses with regard to the variables in a modified Norton scale and on admission with regard to the nutritional status. There are significant correlations between the variables establishing the modified Norton scale and the different criteria included in the nutritional assessment form.