Developmental Milestones
Table 2 shows what developmental milestones subjects achieved and when available, the age at which they achieved them. Of those who responded to the developmental milestone questions, all (12 of 12) reported that the affected individual was able to hold their head up and turn back to the front (10 of 10). Ninety-one percent (10 of 11) were able to turn front to back. Fifty-four percent (6 of 11) were able to crawl either combat and/or belly style. Thirty-six percent (4 of 11) were able to pull to a sit but only 17% (2 of 12) were able to sit alone. Thirty-one percent (4 of 13) were able to take their first steps, one “with help”, one “with a kiddie walker”, and one “with assistance and support. None (12 of 12) were able to stand alone, and none (11 of 11) were able to climb stairs. Thirty-three percent (4 of 12) were able to pedal a tricycle. Regarding toileting, 60% (9 of 15) had achieved toilet training.
In terms of language development, 83% (10 of 12) demonstrated the ability to babble, 81% (13 of 16) were able to speak their first words, and 50% (6 of 12) were able to speak in sentences.