Table 4.

Number (percent of total) of persons with mitral regurgitation at baseline and final echocardiograms

Baseline	Final
	None	Trace	Mild	Moderate	Severe	Totals
None	84	155	16	4	1	260
	(8.24)	(15.20)	(1.57)	(0.39)	(0.10)	(25.49)
Trace	90	300	31	16	2	439
	(8.82)	(29.41)	(3.04)	(1.57)	(0.20)	(43.04)
Mild	24	95	57	22	2	200
	(2.35)	(9.31)	(5.59)	(2.16)	(0.20)	(19.61)
Moderate	7	32	16	40	4	99
	(0.69)	(3.14)	(1.57)	(3.92)	(0.39)	(9.71)
Severe	0	0	6	12	4	22
	(0)	(0)	(0.59)	(1.18)	(0.39)	(2.16)
Totals	205	582	126	94	13	1020
	(20.10)	(57.06)	(12.35)	(9.22)	(1.27)	(100)