Correlation between nasalance, subjective questionnaires,
and disease severity
The Lund-Mackay scores had a significant negative correlation with
preoperative nasalance of [i] and [m] ([i] R= -0.342, P =
0.026; [m] R= -0.356, P = 021) and a significant positive
correlation with the change of nasalance of [i] and [m] ([i]
R= 0.486, P = 0.001; [m] R= 0.418, P = 0.006). The VAS scores of
nasality were not correlated with nasalance. The SNOT-22 nasal domain
had a significant negative correlation with preoperative nasalance of
[i] (R= -0.307, P = 0.048) and a significant positive correlation
with the change in nasalance of [m] (R= 0.365, P = 0.017). Regarding
nasal obstruction of SNOT-22, there was a significant negative
correlation with the preoperative nasalance of [a], [i], and
[u] ([a] R= -0.460, P = 0.002; [i] R= -0.408, P = 0.007;
[u] R= -0.318, P = 0.040) and a significant positive correlation
with the change of nasalance of [m] ( R= 0.312, P = 0.044; Table 2).