Mean Mean
difference
Standard
deviation
P-valuea
Standing
position
Sitting
position
Right nostril
Calculated resistance (cm H2O/L/min) 5.83 4.81 1.38 4.894 0.11
Volume (cm3) 4.91 4.56 0.436 2.772 0.366
Minimum cross-sectional area (MCA, cm2) 0.41 0.42 -0.003 0.171 0.929
Distance to MCA (cm) 1.85 1.96 -0.049 0.88 0.745
Left nostril
Calculated resistance (cm H2O/L/min) 6.15 8.65 -2.497 16.607 0.38
Volume (cm3) 4.7 4.15 0.553 2.566 0.211
Minimum cross-sectional area (MCA, cm2) 0.37 0.36 0.019 0.141 0.421
Distance to MCA (cm) 2 2.13 -0.131 0.736 0.301

aDifference between means, t-test. P-value was considered significant when P < 0.05.
MCA = minimum cross-sectional areas.