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. Author manuscript; available in PMC: 2013 Apr 18.
Published in final edited form as: Twin Res Hum Genet. 2012 Oct 19;16(1):104–111. doi: 10.1017/thg.2012.77

TABLE 2.

Characteristics of the MADT Follow-Up Sample

Participant Non-participant Deceased
N 2,402 1,484 428
(%) (55.7%) (34.4%) (9.9%)
% Female 47.3% 53.8% 42.8%
Intake age
Mean 56.0 57.2 60.5
SD 6.1 6.4 5.9