Interactions of time by treatment type for (a) efficacy and (b) practice on the staff survey scales: addiction treatment programs, New York State, 2008–2009.
Note. Outpatient time effects shown in the figure were not significant for either of the measures shown. Residential time effects were significant for both efficacy (P < .001) and practice (P < .01). Methadone time effects were nonsignificant for efficacy (P = .25) and were significant for practice (P < .01). All scale scores ranged from 1 to 5.