Table 2 Differences in head circumference at birth, 1 year, 2 years, and 3 years of age between achondroplasia patients with and without hydrocephalus. The values represent the mean head circumference (cm)
|  | Male (n = 67) | Female (n = 58) | ||||
|---|---|---|---|---|---|---|
HCP (n = 11) | No HCP (n = 56) | p-value | HCP (n = 4) | No HCP (n = 54) | p-value | |
Birth | 38 | 37.9 | 1.000 | 35.5 | 36.1 | 1.000 |
1 year | 51.3 | 49.7 | 0.230 | 49.8 | 49.0 | 0.373 |
2 years | 53.5 | 53.0 | 0.679 | 51.4 | 51.9 | 0.752 |
3 years | 55.4 | 54.0 | 0.491 | 52.3 | 53.8 | 0.375 |