Table 1.

Patient characteristics by age groups.

Age group (years)	Number (%)	Craniotomy (%)	Average length of hospital stay (days)
<6	444 (36.4)	2.7	16.6
6–11.9	364 (29.9)	3.8	21.9
12–15.9	184 (15.1)	4.9	27.7
16–18	227 (18.6)	7	39.2