Significant main effects of time were detected on the total KIDI score
[F(1, 41) = 11.52, p ≤ 0.01] and the ‘knowledge of drug’ subscale score
[F( 1, 4 1) = 1 6. 32 , p ≤ 0.01], but these scores were not significantly af-
fected by the group × time interaction (Ta bl e 4).