Table 2.
Descriptives of measures by study
| Sleep | Cognitive | Covariate(s) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Study | Sleep duration | Animal Naming | Block Design | Symbol Digit | Word List | Depressive symptoms | ||||||
| N | M(SD) | N | M(SD) | N | M(SD) | N | M(SD) | N | M(SD) | N | M(SD) | |
| Overall | 7052 | 7.08 (.92) | 5650 | 53.04 (8.43) | 982 | 50.98 (12.11) | 4498 | 53.57 (10.82) | 5730 | 51.68 (8.34) | 6678 | 5.05 (5.16) |
| SATSA | 138 | 8.59 (.86) | - | - | 136 | 55.62 (9.74) | 134 | 53.75 (10.23) | 84 | 59.59 (11.17) | 138 | 9.16 (5.43) |
| OCTO-Twin | 338 | 7.31 (1.26) | - | - | 310 | 41.40 (9.42) | 260 | 38.86 (9.77) | - | - | 260 | 7.43 (6.22) |
| MADT | 3760 | 7.18 (.74) | 3684 | 52.96 (8.54) | - | - | 3388 | 53.35 (8.83) | 3690 | 50.21 (8.01) | 3640 | 3.70 (3.93) |
| VETSA | 1282 | 6.51 (.94) | 1270 | 52.93 (8.34) | - | - | - | - | 1268 | 54.99 (8.18) | 1184 | 7.47 (6.38) |
| MTSADA | 738 | 6.99 (1.01) | - | - | 536 | 55.34 (10.78) | 716 | 59.91 (13.95) | - | - | 718 | 5.92 (5.52) |
| MIDUS | 796 | 7.24 (.88) | 696 | 53.66 (7.99) | - | - | - | - | 688 | 52.55 (7.60) | 738 | 5.99 (5.21) |
T-scored cognitive measures