highly significantp < 0.001
A highly significant correlation was observed between call duration and expiration duration ( r 2 = 0.761, p < 0.001), while no significant correlation was found between call duration and inspiration duration.
A highly significant correlation was observed between call duration and expiration duration ( r 2 = 0.761, p < 0.001), while no significant correlation was found between call duration and inspiration duration.