Table 4

Density of aberrant crypt foci (ACF) in the control and aspirin treated groups

Density of ACF (ACF/cm2)% reduction in density of ACF (p value*)
Control groupAspirin group
Values are mean (SD). *Mann-Whitney U test.
Right colon0.047 (0.12)0.017 (0.03)63 (0.09)
Left colon0.13 (0.12)0.024 ( 0.02)72 (<0.01)