122 Chapter 6 Figure 1. Nutrie study flow diagram DXA compared to ADP Compared to ADP, fat mass measured with DXA was higher (254.7 g (165.7 – 343.9). Likewise, fat mass percentage measured with DXA was 4.5 % (2.7 – 6.2) higher than ADP. (table 2) There was no agreement between fat mass measured with DXA compared to ADP. The mean difference was 255 + 234 g with a lower limit of agreement of -212 g and an upper limit of agreement of 723 g. For fat mass percentage the mean difference between DXA and ADP was 4.5 + 4.7%, with a lower limit of -4.8% and an upper limit of 13.7 %. The Bland Altman plot showed a proportional bias: as the mean fat mass percentage increased the absolute difference in fat mass percentage between the two methods increased. Based on a maximum allowed difference of 2%, no agreement was found. (Figure 2) For
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