Table 4.
Success rates of Otovent (A), sphere 1 (D), and sphere 2 (E) in causing a Valsalva manoeuvre when inflated (
n
= 12)
Balloons
Success rate
n
Mean (%)
95% confidence interval (%)
Otovent (A)
12
66.7
40.0 to 93.3
Sphere 1 (D)
12
58.3
30.4 to 86.2
Sphere 2 (E)
12
66.7
40.0 to 93.3