highly significantp < 0.01
In LCHN, the moisture content of boluses showed a highly significant positive correlation with the amount of saliva added (r = 1.000) and saliva flow rate (r = 0.961) ( p < 0.01), indicating that the moisture content of boluses affects the amount of saliva added and saliva flow rate, and both the amount of saliva added and saliva flow rate increase with an increase in the moisture content of boluses.