Table 3.

Insulin, C-peptide, fructosamine, and SHBG

Level
Correlations*
MeanSDMedianInsulin
Insulin92.977.968.0
C-peptide579.0432.1483.00.78***
Fructosamine254.333.8250.50.03
SHBG61.331.955.0−0.17**
WHR0.80.070.80.19***
Body mass index26.04.6025.00.29***
Stage−0.04
Tumor grade0.001
ER status−0.047
Treatment−0.031
  • NOTE: Missing values: insulin (1), C-peptide (2), fructosamine (4), SHBG (11). *, means P ≤ 0.05; **, means P ≤ 0.01; ***, means P ≤ 0.001.

  • * Spearman correlation coefficients.

  • ER = estrogen receptor (missing values, 180).

  • Systemic treatment: chemotherapy, tamoxifen, both, other hormone, or none.