Prevalence study of nasal septal deformities in Korea: results of a nation-wide survey.

A nation-wide survey investigating the prevalence and risks of nasal septal deformity (NSD) was conducted by a group of otolaryngologists from July through October 1991. The total number of subjects surveyed was 9,284, and these were drawn from 2,899 households residing in 60 different areas throughout the country. The overall prevalence of NSD was 22.38%, and NSD tended to predominate in males and to increase with age. According to Mladina's classification, the most common type was type 1, followed by types 2, 3, 5, 7, 4, and 6. A positive correlation between nasal trauma history (NTH) and NSD was statistically confirmed (p < 0.01).