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.
Mean maternal age at childbirth based on outcomes for study participants (n = 8,098).
| Neurodevelopmental outcome | N (%) | Mean (95% CI) | P-value |
|---|---|---|---|
| ADHD | 0.001 | ||
| Yes | 521 (6.4%) | 25.2 (24.3, 26.0) | |
| No | 7,561 (93.6%) | 26.7 (26.3, 27.0) | |
| LD | <0.001 | ||
| Yes | 841 (10.4%) | 25.7 (25.2, 26.3) | |
| No | 7,245 (89.6%) | 26.6 (26.3, 27.0) | |
| Either ADHD or LD | <0.001 | ||
| Yes | 1,090 (13.5%) | 25.5 (24.9, 26.2) | |
| No | 7,008 (86.5%) | 26.7 (26.4, 27.0) |
Weighted mean.
ADHD, attention-deficit/hyperactivity disorder; LD, learning disability.
