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.
Sample characteristics.
| Time point | N | Number of girls | Number of boys | Mean age in months (SD) | Min age in months | Max age in months |
|---|---|---|---|---|---|---|
| T1 | 31 | 10 | 21 | 4.35 (0.29) | 3.90 | 5.20 |
| T2 | 35 | 13 | 22 | 6.55 (0.36) | 6.00 | 7.40 |
| T3 | 39 | 13 | 26 | 9.14 (0.39) | 8.60 | 10.20 |
| T4 | 21 | 4 | 17 | 12.05 (0.37) | 11.60 | 13.10 |
