TABLE 2.
Missingness and availability of data in each year.
| Year | baseline | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|
| Number of participants a , N | 680 | 644 | 533 | 420 | 202 | 143 | 110 | 63 | 9 |
| Number of informative dropouts b , N | 24 | 52 | 72 | 93 | 91 | 113 | 115 | 37 | |
| Number of missing c , N | |||||||||
| Attention | 11 | 18 | 15 | 13 | 9 | 3 | 7 | 2 | 1 |
| Executive functions | 2 | 5 | 7 | 2 | 4 | 0 | 4 | 2 | 1 |
| Language | 13 | 18 | 11 | 12 | 10 | 4 | 6 | 2 | 1 |
| Memory | 18 | 26 | 22 | 18 | 12 | 6 | 14 | 8 | 1 |
| Visuospatial functions | 113 | 219 | 245 | 203 | 97 | 78 | 98 | 52 | 7 |
a
Number of participants with at least one cognitive score(s) available within the corresponding year.
b
Number of participants dropped out from the study due to death or too ill.
c
Number of missing cognitive composite scores at each year in each domain.