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. Author manuscript; available in PMC: 2013 Nov 18.
Published in final edited form as: Int J Soc Res Methodol. 2011 Oct 13;15(5):10.1080/13645579.2011.623958. doi: 10.1080/13645579.2011.623958

Table 2.

Follow-up rates and timing.

Timepoint Follow-up rate Follow-up rate including retrospective data collection* Days from due date (Median [M, SD])
3-month 91.3% 94.5% 3 (7.3, 7.8)
6-month 84.3% 91.3% 5 (8.8, 8.1)
12-month 87.4% 87.4% 6 (12.1, 15.9)
*

Includes participants who missed the 3- or 6-month follow-up, but provided limited outcome data on these time periods at their 6- or 12-month follow-up, respectively.