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.
Average IQ scores at Age 6 within each Hb group* at Age 4.
| Hb Measurement (Age) and Hb group | VIQ (Age 6) Mean (SD) |
PIQ (Age 6) Mean (SD) |
|---|---|---|
| Age 4 (N=145) | ||
| Hb ≤ 12g/dL (N=37) | 101.19 (14.41) | 102.95 (15.26) |
| 12 < Hb ≤ 13.3 g/dL (N=76) | 103.64 (12.00) | 108.21 (13.02) |
| Hb > 13.3 g/dL (N=32) | 103.91 (11.39) | 109.25 (13.14) |
Cutoffs for Hb groups are the 25th and 75th percentiles
