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Table 5 Comparison of bilateral versus unilateral choanal atresia

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

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
  1. 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