Table 2 The mean age of study groups in female and male in each population
Variable | Age (17–40 years) | |||
|---|---|---|---|---|
Female (116) | Male (102) | |||
Mean | SD | Mean | SD | |
Bosnian | 17.81 | 7.828 | 18.76 | 4.959 |
Chinese | 18.61 | 8.102 | 18.26 | 8.491 |
Nepalese | 17.1 | 8.004 | 18.32 | 6.556 |
The percentage of bilateral absence of frontal sinus | ||||
Bosnian (n = 231) | 7 (3%) | 6 (2.6) | ||
Chinese (n = 244) | 16 (6.6%) | 10 (4.1) | ||
Nepalese (n = 237) | 13 (5.5%) | 6 (2.5%) | ||