| Reference |
Population |
Childhood Age, Years |
Males |
Females |
| Guo 199455 |
100% White (n=555) |
3 |
.18 |
.22 |
| Lauer 198962 |
100% White (n=109 observations) |
7 to 8 |
.57 |
.45 |
| Lauer 198962 |
100% White (n=603 observations) |
9 to 10 |
.63 |
.61 |
| Clarke 199363 |
100% White (n=1286 observations) |
9 to 10 |
.61 |
.59 |
| Lauer 198962 |
100% White (n=1018 observations) |
11 to 12 |
.67 |
.65 |
| Guo 199455 |
100% White (n=555) |
13 |
.5 |
.65
|
| Lauer 198962 |
100% White (n=1041 observations) |
13 to 14 |
.64 |
.68 |
| Clarke 199363 |
100% White (n=1104 observations) |
13 to 14 |
.7 |
.7 |
| Lauer 198962 |
100% White (n=615 observations) |
17 to 18 |
.74 |
.73 |
| Clarke 199363 |
100% White (n=631 observations) |
17 to 18 |
.81 |
.72 |