Variable | HR-ASD | HR-Neg | P a |
---|---|---|---|
Six-month sample | 32 | 106 | |
Total longitudinal sample | 44 | 173 | |
Longitudinal scan complement | |||
6, 12, and 24 m scan | 15 | 54 | |
6 and 12 m scan | 7 | 28 | |
6 and 24 m scan | 6 | 11 | |
12 and 24 m scan | 7 | 37 | |
6 m scan | 4 | 13 | |
12 m scan | 3 | 22 | |
24 m scan | 2 | 8 | |
Mean age time 1 | 6.4 (0.4) | 6.7 (0.7) | .08 |
Mean age time 2 | 12.8 (0.7) | 12.6 (0.6) | .16 |
Mean age time 3 | 24.5 (0.7) | 24.7 (0.7) | .92 |
Sex (% male) | 89 | 58 | <.001 |
ADOS repetitive behavior | 2.7 (1.8) | 0.7 (0.9) | <.001 |
ADOS social affect | 12.0 (3.8) | 2.3 (2.2) | <.001 |
ADOS severity score | 6.0 (1.9) | 1.6 (1.0) | <.001 |
MSEL composite | 79.3 (16.9) | 102.1 (15.8) | <.001 |
RBS-R total items endorsed | 6 (0–38)b | 2 (0–27)b | <.001 |
SEQ total raw score | 51.7 (12.6) | 39.8 (7.6) | <.001 |