Common Bile Duct Dilatations in Asymptomatic Neonates: Incidence and Prognosis

Table 1

Predictive factors of fusiform CBD dilatation*.

			Without dilatation	With dilatation	𝑃 value
			𝑛=18,017	𝑛=209
Sex	Male	𝑛	9,415	118	0.237
		%	98.80%	1.20%
	Female	𝑛	8,602	91
		%	99.00%	1.00%
			𝑛=17,747^†	𝑛=207^††
Mother's age (years)	<25	𝑛	883	6	0.334
		%	99.30%	0.70%
	25–35	𝑛	13,920	163
		%	98.80%	1.20%
	>35	𝑛	2,944	38
		%	98.70%	1.30%
Term/preterm (<259 days)	Term	𝑛	16,149	192	0.398
		%	98.80%	1.20%
	Preterm	𝑛	1,598	15
		%	99.10%	0.90%
Birth weight (grams)	<2,500	𝑛	1,490	10	0.029
		%	99.30%	0.70%
	2,500–4,000	𝑛	15,854	188
		%	98.80%	1.20%
	>4,000	𝑛	403	9
		%	97.80%	2.20%

∗Chi-square test, excluding 4 neonates with choledochal cysts.
†270 neonates had incomplete birth history records.
††2 neonates had incomplete birth history records.