Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Prevalence rates of the most common health problems among first-graders (N = 53,053; Boy = 27,359, Girl = 25,694)
| Health problem | Overall | Boy | Girl Significance |
| Myopia | 27.1 | 25.8 | 28.5*** |
| Caries | 69.6 | 70.0 | 69.1*** |
| Obesity | 9.5 | 10.6 | 8.4*** |
| Dysarthria | 2.5 | 3.0 | 2.0*** |
| Cryptorchidism | - | 2.1 | - |
| Heart murmur | 1.5 | 1.6 | 1.5 |
| Scoliosis | 0.4 | 0.4 | 0.4 |
| Atopic dermatitis | 0.2 | 0.2 | 0.2 |
Statistically significant differences between boys and girls: ***indicates p < .001.
