Skip to main content
. Author manuscript; available in PMC: 2015 Jun 14.
Published in final edited form as: Am J Prev Med. 2009 Jul;37(1 0):S9–16. doi: 10.1016/j.amepre.2009.04.016

Figure 4.

Figure 4

Illustration of follow-up experience of each participant in Cohort 1 (aged 8 years); Cohort 2 (aged 11 years); and Cohort 3 (aged 14 years) at entry, by study year, in Project HeartBeat!, 1991–1995. Each horizontal line represents one participant; each vertical tick represents one completed examination, from entry to the close of data collection.