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Table 4 Prediction values of physiologic variables including age, race, gender, and absolute values (left 2 columns) or percent bone, lean and fat mass (right 2 columns) for plasma leptin and leptin soluble receptor concentrations, and leptin soluble receptor:leptin molar ratio

From: Developmental variations in plasma leptin, leptin soluble receptor and their molar ratio in healthy infants

Dependent variable – plasma leptin (ng/mL)
Independent variables: R2 0.37 Beta (p) Independent variables: R2 0.37 Beta (p)
Age (d) -0.65 (0.001) Age (d) -0.34 (0.01)
Fat (g) 0.44 (0.003) Fat% 0.42 (0.003)
Dependent variable – plasma soluble leptin receptor (ng/mL)
Independent variables: R2 0.22   Independent variables: R2 0.43  
Fat (g) 0.47 (0.004) BMC% -0.63 (0.004)
   Lean% -14.1 (0.001)
   Fat% -13.8 (0.001)
Dependent variable – plasma soluble leptin receptor : leptin ratio
Independent variables: R2 0.54   Independent variables: R2 0.59  
Age (d) -0.71 (0.001) BMC% -0.59 (0.002)
Fat (g) 0.72 (0.001) Lean% -7.04 (0.02)
   Fat% -6.42 (0.03)