Number of subjects in each age group and contributing longitudinal dataa
| Age group (months) | Number of scans | Volumes dropped | Longitudinal data points | Number of subjects | |
|---|---|---|---|---|---|
| Mean | SD | ||||
| 1 | 52 | 128.9 | 12.6 | 1 | 18 |
| 3 | 35 | 129.7 | 13.8 | 2 | 13 |
| 6 | 30 | 132 | 12.9 | 3 | 11 |
| 9 | 29 | 132.7 | 9.1 | 4 | 9 |
| 12 | 36 | 134.5 | 10.7 | 5 | 9 |
| 18 | 23 | 133.1 | 9.7 | 6 | 5 |
| 24 | 18 | 136.2 | 7.9 | 7 | 5 |
↵aThe number of subjects that contributed data at each time is shown on the left as well as the average and SD for the number of included frames for each group. The number of subjects contributing multiple datasets is shown on the right.