Table 3: Comparison of mucocilliary clearance time between normal control and primary atrophic rhinitis patients.

Group Number Nasal mucocilliary clearance time range
(in minutes)
Mean ± SD

Normal control 507.3–14.79.92 ± 2.25
Atrophic rhinitis case9024–>6042.82 ± 11.52

value control versus case <0.0001.