Table 4.

Intra- and interobserver reproducibilities for left ventricular volumes and ejection fraction by single- and four-beat three-dimensional echocardiography.

	EDV (ml)	ESV (ml)	EF (%)
Group A
Intraobserver variability (%)
Four-beat full volume	4.4	5.1	3.4
Single-beat full volume	3.9	4.6	4.1
Group A
Interobserver variability (%)
Four-beat full volume	7.3	8.5	3.9
Single-beat full volume	6.4	6.5	4.5
Group B
Intraobserver variability (%)
Four-beat full volume	9*	11.4	8.3**
Single-beat full volume	4.5	2.9	4.8
Group B
Interobserver variability (%)
Four-beat full volume	10.4*	15.2*	17.9**
Single-beat full volume	7.6	7.2	5.6

EDV: end-diastolic volume, ESV: end-systolic volume and EF: ejection fraction, *p < 0.05 and **p < 0.001.