Table 2 Comparisons of HC, weight, and height across groups from birth to the age of 24Â months in 3-month intervals
Head circumference | |||||
Age | Autism | Control | Autism-control | t value | p value |
Birth | 34.4 | 35 | −0.6 | −2.1 | 0.04* |
3 months | 39.7 | 40.2 | −0.5 | −2.8 | 0.006* |
6 months | 42.8 | 43.2 | −0.4 | −1.7 | 0.1 |
9 months | 44.7 | 44.9 | −0.2 | −1.3 | 0.19 |
12 months | 45.9 | 46.2 | −0.3 | −1.3 | 0.21 |
15 months | 46.7 | 47.1 | −0.4 | −1.7 | 0.1 |
18 months | 47.2 | 47.7 | −0.5 | −1.9 | 0.06 |
21 months | 47.7 | 48.3 | −0.6 | −1.4 | 0.17 |
24 months | 48.1 | 49.1 | −1 | −1.8 | 0.12 |
Weight | |||||
Age | Autism | Control | Autism-control | t value | p value |
Birth | 3.2 | 3.4 | −0.2 | −2.7 | 0.007* |
3 months | 5.6 | 6.1 | −0.5 | −3.8 | 0.0004* |
6 months | 7.6 | 7.9 | −0.3 | −1.9 | 0.06 |
9 months | 8.7 | 9 | −0.3 | −1.4 | 0.1 |
12 months | 9.7 | 9.9 | −0.2 | −1.2 | 0.24 |
15 months | 10.4 | 10.6 | −0.2 | −0.9 | 0.36 |
18 months | 11.1 | 11.3 | −0.2 | −1 | 0.31 |
21 months | 11.7 | 12 | −0.3 | −1.1 | 0.28 |
24 months | 12.3 | 12.5 | −0.2 | −1 | 0.31 |
Height | |||||
Age | Autism | Control | Autism-control | t value | p value |
3 months | 59.4 | 60 | −0.6 | −1.9 | 0.06 |
6 months | 66.9 | 67.3 | −0.4 | −1.2 | 0.24 |
9 months | 71.5 | 71.8 | −0.3 | −1.4 | 0.58 |
12 months | 75.5 | 75.3 | 0.2 | −1.2 | 0.73 |
15 months | 78.8 | 78.5 | 0.3 | −0.9 | 0.53 |
18 months | 81.7 | 81.5 | 0.2 | −1 | 0.72 |
21 months | 84.5 | 84.2 | 0.3 | −1.1 | 0.63 |
24 months | 87 | 86.7 | 0.3 | −1 | 0.67 |