Table 2.

Association between any adenoma or any advanced adenoma and at least 1 year of insulin exposurea

Any adenomaAdvanced adenoma
Case n(%)Control n(%)Crude OR (95% CI)Adjusted OR (95% CI)Case n(%)Control n(%)Crude OR (95% CI)Adjusted ORb (95% CI)
No insulin (reference)141 (77.5)518 (80.7)ReferenceReference44 (81.5)518 (80.7)ReferenceReference
≥1 yr insulin41 (22.5)124 (19.3)1.2 (0.8–1.8)1.2 (0.8–1.8)10 (18.5)124 (19.3)0.9 (0.5–1.9)0.9 (0.5–2.0)
  • aCases and controls who had insulin exposure less than 1 year in duration were excluded from this analysis.

  • bAdjusted for sex and age only as none of the other variables met the a priori confounder selection criteria.