Table 1

Characteristics of IGF-1 and IGFBP-3 in the underlying (control) population

Cancer controlsAdenoma controls
n 158207
Median age (yr)6259
IGF (ng/ml)
Mean149.6166.7
Median140.0158.5
IGFBP-3 (ng/ml)
Mean37243837
Median37053809
Pearson correlation (r)
IGF-1 and IGFBP-30.530.50
IGF-1 and age−0.23−0.27
IGF-1 and agea−0.34−0.29
IGFBP-3 and age−0.10−0.04
  • a IGF-1 is adjusted for IGFBP-3 level by residual analysis.