Table 3. Echocardiographic variables before CRT implantation and at time of CRT-HF clinic visit.

	Responders (n = 76)				Non-responders (n = 49)
	Pre-CRT	Missing	Post-CRT	Missing	Pre-CRT	Missing	Post-CRT	Missing
Left ventricular ejection fraction, %, mean (SD)	28 (7)	0%	43 (9)	0%	26 (6)	0%	27 (7)	0%
Left ventricular end-diastolic volume, mL, mean (SD)	180 (54)	13%	137 (43)	4%	217 (68)	14%	218 (73)	6%
Left ventricular end-systolic volume, mL, mean (SD)	135 (48)	20%	85 (37)	8%	158 (55)	20%	164 (60)	10%