All subjects were assessed at baseline. One subject #1 did not respond to a level of clinical significance (20 points). Further inspection revealed that this client did not obtain a significant response at any point during the two-year study. He was removed from the analysis of the PPG data (repeated measures ANOVA) because low level data generated from a circumferential PPG transducer were not considered reliable (Kuban et al., 1999; Barbaree & Mewhort, 1994).