Table 1.

Age distribution of patients with primary microcephaly

Age	Female	Male	Unknown	Total
0–1 mo	12	14		26
1–2 mo		4		4
3–6 mo	9	3		12
7–12 mo	8	9		17
13–24 mo	4	3		7
2–3 y	5	3		8
3–6 y	6	10		16
6 y or more	9	6	1	16
Unknown	0	0	4	4
Total	53	52	5	110

Note: The table summarizes the sex and age at the time of imaging. No information about sex or age was available for the five patients.