Computed Quantities of Interest
To determine the patency of each nasal cavity, nasal resistance (NR) was
calculated as ∆P⁄Q (Pa.s/mL) where ∆P is bilateral pressure drop from
nostrils to choana, and Q is bilateral volumetric flow rate. In
addition, as described in Patki and Frank-Ito2, nasal
index was calculated as \(100\times NW\div NH,\ \) where NWis nasal width and NH is nasal height. Lastly, statistical
comparisons were made between the genders, using the nonparametric
Wilcoxon Rank Sum test and significance (alpha=0.05), to test that the
difference in their median values was zero.