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).