This tests whether the quantity = (controls-patients)-(males-females) is different than 0. Note the order of the inputs may be different (making the final sign different). The order depends on the order that you specfied in the levels file you passed to qdec.

doug

On Thu, 3 Jun 2010, liyari5018 wrote:

Hi FS experts,

when i use qdec to analysis my data: 45 norms and 45 patients, what does this means: Is there a diagnosis--gender interaction in the mean thickness? (PS: I got a corrected results in this item, but i don't know how to report it) Thanks for you reply! LJ