Table 2.
Treatment group | Number of females evaluated | Incidence of intraductal hyperplasia (%) | p-value, Chi Square compared to controls |
---|---|---|---|
Controls | 23 | 1/23 (4%) | |
2 μg BPS/kg/day | 16 | 8/16 (50%) | p<0.01 |
200 μg BPS/kg/day | 13 | 8/13 (62%) | p<0.01 |
0.01 μg EE2/kg/day | 16 | 9/16 (56%) | p<0.01 |
1 μg EE2/kg/day | 11 | 7/11 (64%) | p<0.01 |