Table 2.

Baseline adenoma characteristics by tertile of baseline IGF-I levels

Adenoma characteristicsTertile of baseline IGF-I (mean, ng/mL)
1 (68.0 ± 22.8)2 (116.4 ± 12.2)3 (176.3 ± 35.5)P value
Large adenoma*36 (36.4)40 (40.8)45 (45.5)0.43
Villous histology16 (16.2)19 (19.4)30 (30.3)0.04
Number of adenomas1.8 ± 1.12.0 ± 2.32.0 ± 1.40.27
Proximal location only32 (32.3)26 (26.5)22 (22.2)0.28
Advanced lesion38 (38.4)43 (43.9)52 (52.5)0.13
  • * Adenoma is >1 cm in size.

  • Adenoma is either tubulovillous or villous.

  • Adenoma either tubulovillous or villous and/or >1 cm in size.