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. Author manuscript; available in PMC: 2017 Mar 14.
Published in final edited form as: J Exp Zool A Ecol Genet Physiol. 2016 Dec 30;325(9):588–597. doi: 10.1002/jez.2053

Table 2.

Regression analyses of body composition using values from the chemical carcass analysis (dependent variable, y) and values from quantitative magnetic resonance (independent variable, x)

N r2 P-value Regression equation
Lean mass (both sexes) 40 0.997 <0.0001 y = 1.054x + 0.069
 Female 19 0.989 <0.0001 y = 0.995x + 0.154
 Male 21 0.994 <0.0001 y = 1.009x + 0.314
Fat mass (both sexes) 41 0.931 <0.0001 y = 0.752x − 0.031
 Female 20 0.828 <0.0001 y = 0.647x − 0.002
 Male 21 0.915 <0.0001 y = 0.827x − 0.070
Water mass (both sexes) 41 0.989 <0.0001 y = 0.867x + 0.190
 Female 20 0.928 <0.0001 y = 0.849x + 0.168
 Male 21 0.980 <0.0001 y = 0.785x + 0.586

Note that the variables on the x and y axes in Fig. 1a–c are switched to remain consistent with the presentation of body composition data in the literature. Two females that had oviductal eggs were removed from the analyses.