Table 4.

Bivariate and multivariate logistic regression to identify factors associated with poor image quality (quality grades 1–2 vs quality grades 4–5)

	Bivariate analysis			Multivariate analysis
	Odds ratio	P	95 % - confidence interval	Odds ratio	P	95 % - confidence interval
Age (years)	0.98	ns	0.92–1.04	0.89	<0.05	0.8–0.99
Heart rate (bpm)	1.07	<0.01	1.02–1.12	1.11	<0.01	1.03–1.2
Height (cm)	0.97	<0.05	0.95–0.99
Weight (kg)	0.96	<0.05	0.93–0.99
EF (%)	5.8×10 −6	<0.01	1.3 × 10 −9 –0.03	1.2 × 10 −10	<0.01	2.4 × 10 −17 –6 × 10 −4
Complex malformation	4.26	<0.05	1.05–17.35
Surgical correction	0.31	0.07	0.08–1.11
Acquisition window (ms)	0.96	<0.05	0.92–0–99
Scan duration (s)	1.16	0.09	0.98–1.38
Use of IV contrast	0.14	<0.01	0.03–0.55	0.007	<0.01	0.0004–0.15