Table 4.

Upper and Lower Range of Errors in 2 Hypothetical Clinical Scenarios (Interobserver-Acquisition Comparison 2)

Patient With Normal Echocardiographic Indices (2-Year Old, BSA 0.73)
	Normal Values*	%difference	Lower Range of Error	Upper Range of Error
EDD (M-mode), cm	3.5	5.5	3.3	3.7
SF (M-mode), %	37	18.4	30.2	43.8
SF (2D), %	37	19.2	29.9	44.1
Mass (M-mode), gm	51.2	16.7	42.6	59.7
FAC (4-C), %	50	19.2	40.4	59.6
EDV (5/6 AL), cc	48	9.2	43.6	52.4
EF (5/6 AL), %	65	11.3	57.7	72.3
Mass (5/6 AL), gm	40	12.3	35.1	44.9
Patient with Abnormal Echocardiographic Indices (2-year old, BSA 0.73)
	Abnormal values†	%difference	Lower range of error	Upper range of error
EDD (M-mode), cm	4.8	5.5	4.6	5.1
SF (M-mode), %	23	18.4	18.8	27.2
SF (2D), %	23	19.2	18.6	27.4
Mass (M-mode), gm	153.5	16.7	127.8	179.1
FAC (4-C), %	20	19.2	16.2	23.8
EDV (5/6 AL), cc	90	9.2	81.7	98.3
EF (5/6 AL), %	36	11.3	31.9	40.1
Mass (5/6 AL), gm	95	12.3	83.3	106.7

2D indicates 2 dimensional; 4-C, 4 chamber; 5/6 AL, 5/6 area-length method; BSA, body surface area; EDD, end-diastolic dimension; EDV, end-diastolic volume; EF, ejection fraction; FAC, fractional area change; and SF, shortening fraction.

^*Z score close to 0.

^†Z score of +5 or −5.