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Table 3 Assumptions made about numbers of participants at different timepoints

From: The clinical and cost effectiveness of cognitive behavioural therapy plus treatment as usual for the treatment of depression in advanced cancer (CanTalk): study protocol for a randomised controlled trial

Time Cognitive behavioural therapy over treatment as usual; difference in BDI-II score Percent remaining in the study TAU CBT
n = 120 n = 120
0 weeks (baseline) 0 100 120 120
6 weeks 3 70 84 84
12 weeks 6 65 78 78
18 weeks 6 63 76 76
24 weeks 6 60 72 72