Table 1.
Clinical characteristics of 254 individuals with idiopathic short stature after exclusion of known causes
| Characteristic | No. (%) |
|---|---|
| Age group | |
| <4 yrs | 43 (17) |
| >4 yrs | 211 (83) |
| Small for gestational age | 81 (32) |
| Short stature [SDS]a | |
| −2 to −3 | 135 (53) |
| −3 to −4 | 55 (22) |
| −4 to −5 | 12 (5) |
| <−5 | 4 (2) |
| Below est. heightb | 48 (19) |
| Short stature type | |
| Isolated | 186 (73) |
| Syndromic | 68 (27) |
| Head circumference [SDS] | |
| >−2 | 153 (60) |
| −2 to −3 | 38 (15) |
| −3 to −5 | 32 (13) |
| <−5 | 3 (1) |
| Not available | 28 (11) |
| IQ | |
| Normal | 203 (80) |
| 70–85 | 51 (20) |
| Sex | |
| Female | 155 (61) |
| Male | 99 (39) |
| Bone age | |
| Accelerated | 11 (4) |
| Normal | 21 (8) |
| Delayed | 66 (26) |
| Not available | 156 (61) |
aAll 254 affected individuals presented with a height below the est. final adult height (est. height)
bAffected individuals with a height above −2 SDS, but below the est. height