Mintek LV, LV-T N=67, Study, N=133, value, Control, Characteristic, Table 13: Patient Demographics at Pre-Enrollment

54 Stratos LV/LV-T Technical Manual

Table 13: Patient Demographics at Pre-Enrollment

Characteristic		Study		Control		P-
		N=133		N=67		value
Age at Enrollment (Years)	69.5 ± 0.9		69.1 ± 1.2		0.781*
Mean ± SE
Range		43 to 88		38 to 84
Gender	93 (69.9%)		51 (76.1%)		0.407**
Male
Female	40 (30.1%)		16 (23.9%)
Underlying Heart Disease	100 (75.2%)		54 (80.6%)		0.294***
Ischemic Cardiomyopathy
Nonischemic Cardiomyopathy	34 (25.6%)		15 (22.4%)
Type of Bundle Branch Block	91 (68.4%)		49 (73.1%)
Left Bundle Branch Block					0.877***
Right Bundle Branch Block	26 (19.5%)		10 (14.9%)
Other	19 (14.3%)		11 (16.4%)
New York Heart Association
Class	121 (91.0%)		60 (89.6%)		0.800**
Class III
Class IV	12 (9.0%)		7 (10.4%)
Intrinsic QRS Duration (ms)	161.9 ± 2.0		156.1 ± 2.3		0.073*
Mean ± SE
Range		130 to 252		130 to 200
Left Ventricular Ejection
Fraction (%)	22.1 ± 0.6		23.3 ± 0.8		0.255*
Mean ± SE
Range		5 to 35		10 to 35
Six Minute Walk Distance
(meters)			250.5 ±		0.775*
Mean ± SE	254.8 ± 8.9
Range			11.9
		20 to 451
				27 to 447
Quality of Life Questionnaire
Score	54.3 ± 2.1		52.5 ± 3.1		0.638*
Mean ± SE
Range		0 to 105		0 to 102

*Student's t-test (2-sided) for means, **Fisher's Exact Test (2-sided) for 2 possible answers, ***Chi-Square test (2-sided) for more than 2 possible answers