Table 2.

Multivariable logistic regression model (0 = not seen, 1 = visualized)

Model for pediatrics (age < 18)	Odds ratio (95% confidence interval)	p value
Age in years	1.04 (0.94, 1.15)	0.430
Patient sex (0 = male (ref), 1 = female)	0.50 (0.22, 1.14)	0.099
US time in minutes	1.04 (1.01, 1.07)	0.012
Experience in years	1.07 (1.02, 1.13)	0.012

Cox and Snell R-square = 0.17; overall model Chi-square = 22.0, p < 0.001