. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: J Am Soc Echocardiogr. 2011 Jan;24(1):53–59. doi: 10.1016/j.echo.2010.10.015

Table 5.

Multivariate Models for coronary artery visualization by the core laboratory.

Variable	All echocardiograms (4,123 observations)		Echocardiograms on patients < 3 years of age (2,093 observations)

	Odds ratio (95% CI)	P-value	Odds ratio (95% CI)	P-value
Local Center		<0.001		<0.001
CA Segment		<0.001		<0.001
Days from trial start to echocardiogram		N/A	1.12^* (1.02, 1.24)	0.02
Sedation	1.41 (1.004, 1.97)	0.047	1.89 (1.09, 3.27)	0.02

CA: coronary artery; CI = confidence interval

Odd ratio per 90 day increase in interval from trial start to echo acquisition