Table 1 The proportion of low-grade and high-grade childhood CNS tumors in each age group
Age group, years | Low grade (%) | High grade (%) | Ratio (High grade/ Low grade) |
|---|---|---|---|
0–3 | 6.9(2.7, 11.1) | 7.1(4.4, 9.9) | 1.03 |
4–6 | 9.2(7.4, 10.9) | 9.6(5.6, 13.5) | 1.04 |
7–9 | 11.4(6.4, 16.5) | 11.4(9.6, 13.2) | 1.00 |
10–12 | 12.2(10.3, 14.0) | 9.9(7.6, 12.1) | 0.81 |
13- | 13.4(8.0, 18.7) | 9.0(5.4, 12.6) | 0.67 |
Total | 53.0(45.6, 60.3) | 47.1(39.9, 54.3) | 0.89 |