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Table 3 Prediction values of physiologic variables including age, race, gender, and absolute values (left 2 columns) or age and gender specific Z scores (right 2 columns) of anthropometric measurements for plasma concentrations of leptin and leptin soluble receptor*, 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 0.49 Beta (p) Independent variables: R2 0.46 Beta (p)
Weight (g) 1.87 (0.001) Weight Z score 0.83 (0.001)
Length (cm) -2.17 (0.001) Length Z score -0.44 (0.01)
Gender (Female = 1, male = 0) 0.27 (0.03)   
Dependent variable – plasma soluble leptin receptor : leptin molar ratio
Independent variables: R2 0.50   Independent variables: R2 0.44  
Age (d) -0.75 (0.001) Weight Z score 0.66 (0.001)
Weight (g) 1.51 (0.001)   
Gender (Female = 1, male = 0) 0.39 (0.01)   
  1. * None of the physiologic variables was predictive for plasma soluble receptor concentration.