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. 2012 Apr 3;46(2):118–129. doi: 10.1159/000337241

Table 2.

Subject enrollment and retention at each stage in the clinical trial by treatment arm

Baseline (S1) RC (S3) 6-month (S4) 12-month (S5) 18-month (S6) 24-month (S7)
Control 116 58 53 52 51 52
Intervention 115 66 60 58 57 60

Total 231 124 113 110 108 112