Table 3.

Correlations of IGFs with breast density by tertiles of IGFs among premenopausal women

nrs* (P)
IGF-I (ng/mL)IGFBP-3 (ng/mL)IGF-I/IGFBP-3 molar ratio
IGF-I (ng/mL)
    ≤193.941261−0.008 (0.904)
    193.942-246.058261−0.178 (0.004)
>246.058261−0.150 (0.016)
IGFBP-3 (ng/mL)
    ≤4,353.92610.138 (0.027)0.139 (0.025)
    4,354.0-5,036.72610.096 (0.124)0.091 (0.146)
    >5,036.7261−0.039 (0.530)−0.024 (0.706)
  • * Spearman correlation between continuous variables. Adjusted correlations are partial Spearman coefficients. Adjusting for age (years), BMI (kg/m2), IGF-I (ng/mL), or IGFBP-3 (ng/mL) if applicable.