question: Compared to active control treatment (MoodGYM) what was the result of interpersonal psychotherapy (IPT) on dropout rates?
context: Furthermore, dropout rates were significantly higher for participants assigned to MoodGYM (451/613, 74%) compared with IPT (414/620, 67%) or CBT (429/610, 70%; χ2
  2= 6.8, P=.03).