a nonsignificant trendp = 0.055
In the BDNF val66 homozygotes (BDNF 66met-), there was a nonsignificant trend for an age effect in the genu FA ( b = −0.00217 ± 0.00108; t = −2.02, r = −0.38, p = 0.055), and no age difference in splenium FA ( b = −0.0004 ± 0.00063; t = 0.64, r = −0.13, p = 0.53).