From: Cephalometric norms for the upper airway of 12-year-old Chinese children
Age range | Range | |||||
---|---|---|---|---|---|---|
n | Mean | SD | Median | Minium | Maxium | |
Chinese children | ||||||
Male | 224 | 12.5 | 0.3 | 12.5 | 12.0 | 12.9 |
Female | 201 | 12.5 | 0.3 | 12.5 | 12.0 | 12.9 |
Differencea | 0.0 | |||||
Chinese adults | ||||||
Male | 29 | - | - | - | 18.0 | 35.0 |
Feame | 45 | - | - | - | 16.0 | 42.0 |
Differenceb | - | |||||
Caucasian | ||||||
Male | 61 | 12.5 | 0.2 | 12.5 | 12.0 | 12.9 |
Female | 47 | 12.4 | 0.3 | 12.5 | 12.0 | 12.9 |
Differencea | 0.1 |