Table 1

Correlation between indices of growth and gestational age, GH:IGF-I ratio and IGF-I:IGFBP-3 ratio

Indices of growthFetal weightAbdominal circumferenceFemoral length
Correlation indexGA r = 0.931-150 GA r = 0.941-150 GA r = 0.901-150
GH:IGF-I r = -0.811-150 GH:IGF-I r = -0.801-150 GH:IGF-I r = -0.801-150
IGF-I:IGFBP-3 r = 0.53** IGF-I:IGFBP-3 r = 0.53** IGF-I:IGFBP-3 r = 0.53**
Multiple regressionGA R2 = 0.921-150, SE = 0.09,
 PRC = 0.89
GA R2 = 0.921-150, SE = 0.03,
 PRC = 0.88
GA R2= 0.841-150, SE = 0.05,
 PRC = 0.78
GH:IGF-I R2 = 0.951-150,
 SE = 0.07, PRC = −0.59
GH:IGF-I R2 = 0.941-150,
 SE = 0.03, PRC = −0.51
GH:IGF-I R2 = 0.891-150,
 SE = 0.04, PRC = −0.54
  • GA = Gestational Age; SE = Standard Error; PRC = Partial Correlation Coefficient.

  • 1-150 P < 0.0001, ** P < 0.001.