Table 1.

Contents of the Framingham Heart Study ECG Repository

Cohort	Examination	Dates	No. of Attendees
Original	19*	1985–1988	1045
	20	1986 – 1990	1203
	21	1988 – 1992	1319
	22	1990 – 1994	1166
	23	1992 – 1996	1026
	24	1995 – 1998	831
	25	1997 – 1999	703
	26	1999 – 2001	558
	27	2002 – 2003	414
	28	2004 – 2005	303
	29	2006 – 2007	218
	30	2008 – 2010	141
	31	2010 – 2012	91
Offspring	3*	1983–1987	1010
	4	1987 – 1991	4019
	5	1991 – 1995	3799
	6	1995 – 1998	3532
	7	1998 – 2001	3539
	8	2005 – 2008	3021
	9	2011 -	(Exam on-going)
Third Generation	1	2003 – 2005	4095
	2	2008 – 2011	3411

^*Digital electrocardiograms partially available for this examination.