References in periodicals archive ?
The PZD statistic is calculated by locating the first intervention data point that reached zero and computing the percentage of data points that reached zero including the first zero point (Scotti et al., 1991).
Treatment effectiveness, as assessed by the (a) MBLR statistic, F (5, 193) = .46, n.s., (b) PND statistic, F(5, 193) = 1.10, n.s., and (c) PZD statistic, F(5, 193) = 1.72, n.s.
However, treatment effectiveness as assessed by the PZD statistic did indicate significant differences of treatment effectiveness across diagnostic categories, F (2, 196) = 4.36, p < .01.
Interventions were more successful for individuals with ID, but not diagnosed with ASD, than for any other category when assessed using the PZD statistic.