Fig. 2

Bland and Altman plot for comparison of energy intake (EI) estimated using RiksmatenFlex compared to total energy expenditure (TEE) assessed through the doubly labelled water method. The mean difference between the methods was − 237 kJ/24 h and limits of agreement (2SD) of 4239 kJ/24 h. The regression equation was y = 0.83X – 8647 (r = 0.479, p = 0.018)