did not achieve significancep = 0.093
The difference between CRF-1 and OA-2 in 12- month-old CCK-1R(-/-) mice did not achieve significance (3 of 8 mice for CRF-1 vs. 13 of 18 for OA-2, χ 2 = 2.821, p = 0.093); however, the frequency (2 of 9 mouse) of 12-month-old wild-type mice fed OA-2 was significantly higher than that (0 of 20 mice) of mice fed CRF-1 (χ 2 = 4.770, p = 0.0029).