A national study of choanal atresia in tertiary care centers in Canada – part I: clinical presentation

Table 5 Comparison of bilateral versus unilateral choanal atresia

Variable	Unilateral (n = 122) No. (%)	Bilateral (n = 93) No. (%)	P-value
Mean (SD) age at presentation (months)	37.8 (46.5)	0.4 (1.4)	<.001
Associated Anomaly	47 (39.2)	65 (69.9)	<.001
Associated Syndrome	23 (20.2)	37 (45.1)	<.001
Respiratory Distress	16 (18.0)	80 (96.4)	<.001
Rhinorrhea	92 (92.0)	36 (65.5)	<.001
Feeding difficulties	21 (24.7)	45 (68.2)	<.001

Note. p-values represent results of an independent samples t-test for the age at presentation variable and results of chi-square tests for the remaining variables

ISSN: 1916-0216