Validity of bioelectrical impedance analysis in estimation of fat-free mass in colorectal cancer patients Hanna Ræder, Ane Sørlie Kværner, Christine.

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Validity of bioelectrical impedance analysis in estimation of fat-free mass in colorectal cancer patients Hanna Ræder, Ane Sørlie Kværner, Christine Henriksen, Geir Florholmen, Hege Berg Henriksen, Siv Kjølsrud Bøhn, Ingvild Paur, Sigbjørn Smeland, Rune Blomhoff Clinical Nutrition DOI: 10.1016/j.clnu.2016.12.028 Copyright © 2017 The Author(s) Terms and Conditions

Fig. 1 Error bars showing mean difference ±1.96 standard deviations (SD) between fat-free mass (FFM) measured by whole-body BIA and segmental BIA using various equations and FFM measured by DXA. Clinical Nutrition DOI: (10.1016/j.clnu.2016.12.028) Copyright © 2017 The Author(s) Terms and Conditions

Fig. 2 Fat-free mass (FFM) assessed by DXA and whole-body BIA. A–C: Scatter plots for; A) Manufacturer's (R2 = 0.96, SEE = 2.03), B) Schols* (R2 = 0.96, SEE = 1.96) and C) Gray* (R2 = 0.97, SEE = 1.87) equation. D–E: Bland–Altman plots for D) Manufacturer's; Mean difference (95% limits of agreement (±1.96 SD)) 1.46 (−2.77, 5.69), E) Schols*; −0.16 (−3.96, 3.64) and F) Gray*; 0.36 (−5.50, 6.22) equation. The dotted lines represent the regression lines between mean FFMDXA and FFMBIA and differences between FFMBIA and FFMDXA. Pearson's correlation coefficient r (p-value); D: 0.28 (p = 0.066) E: −0.14 (p = 0.356) and F: 0.73 (p < 0.001). Clinical Nutrition DOI: (10.1016/j.clnu.2016.12.028) Copyright © 2017 The Author(s) Terms and Conditions

Fig. 3 Fat-free mass (FFM) assessed by DXA and segmental BIA. A–B: Scatter plots for; A) Manufacturer's (R2 = 0.98, SEE = 1.42) and B) Heitmann* (R2 = 0.97, SEE = 1.85) equation. C–D: Bland–Altman plots for C) Manufacturer's; Mean difference (95% limits of agreement (±1.96 SD)) −0.34 (−4.38, 3.70) and D) Heitmann*; 0.17 (−3.42, 3.76) equation. The dotted lines represent the regression lines between mean FFMDXA and FFMBIA and differences between FFMBIA and FFMDXA. Pearson's correlation coefficient r (p-value); C: 0.69 (p < 0.001) and D: −0.03 (p = 0.870). Clinical Nutrition DOI: (10.1016/j.clnu.2016.12.028) Copyright © 2017 The Author(s) Terms and Conditions