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. Author manuscript; available in PMC: 2016 May 1.
Published in final edited form as: Contemp Clin Trials. 2015 Apr 10;42:185–195. doi: 10.1016/j.cct.2015.04.002

Table 2.

Retention of participants in the SMART study

6 months 12 months 18 months 24 months

Total Visits Expected 404 401 399 394

Total Visits Occurred 381 (94.3%) 377 (94.0%) 347 (87.0%) 337 (85.5%)
In Window  367 (96.3%)  365 (96.8%)  326 (93.9%)  285 (84.6%)
Out of Window  14 (3.67%)  12(3.18%)  21 (6.05%)  52(15.4%)

Total Visits Missed 20 (5.0%) 22 (5.5%) 47(11.8%) 53(13.5%)

Total No. Terminated 3 (0.74%) 2 (0.50%) 5(1.25%) 4(1.02%)