Table 2: Frequency of ankyloglossia by length of infant's hospital stay among all live births, British Columbia, Canada, 2004-2013
Length of stay, hNo. of
live births
Ankyloglossia
No. of
cases
Rate per 1000
live births (95% CI)
Rate ratio
(95% CI)
< 2447 7031743.6 (3.1-4.2)0.62 (0.53-0.72)
24-47 (ref)182 5781 0795.9 (5.6-6.3)1.00 (-)
48-71104 5098508.1 (7.6-8.7)1.38 (1.26-1.51)
72-9559 9065469.1 (8.4-9.9)1.54 (1.39-1.71)
96-16728 9402689.3 (8.2-10.4)1.57 (1.37-1.79)
16813 404634.7 (3.6-6.0)0.80 (0.62-1.02)
Missing22 405421.9 (1.4-2.5)0.32 (0.23-0.43)
Total459 4453 0226.6 (6.3-6.8)-

Note: CI = confidence interval, ref = reference category.