Table 1.
Descriptive statistics of the discovery and replication cohorts
| Variable | Subset | ALSPAC | Generation R | QIMR | Raine | Rotterdam Study | Twins UK |
|---|---|---|---|---|---|---|---|
| N | All | 5337 | 3059 | 2775 | 1003 | 2091 | 1396 |
| Age (years)a | All | 11.74 (0.23) | 9.80 (0.33) | 15.47 (2.93) | 20.05 (0.43) | 67.84 (7.91) | 54.84 (12.21) |
| Sex (male)b | All | 49% (2615) | 47.9% (1465) | 46.4% (1287) | 50.85% (510) | 42.9% (897) | 9.10% (127) |
| Left 2D:4Da | All | 96.53 (3.25) | 91.15 (2.72) | 97.66 (3.41) | 96.52 (3.45) | 92.40 (2.24) | 96.70 (3.40) |
| Male | 96.05 (3.17) | 90.74 (2.77) | 96.87 (3.38) | 96.16 (3.33) | 91.96 (2.25) | 95.25 (3.24) | |
| Female | 97.00 (3.26) | 91.52 (2.62) | 98.33 (3.29) | 96.93 (3.53) | 92.73 (2.17) | 96.80 (3.42) | |
| Right 2D:4Da | All | 96.37 (3.28) | – | 97.07 (3.43) | 96.99 (3.28) | 92.39 (2.42) | 97.10 (3.50) |
| Male | 95.87 (3.22) | – | 96.12 (3.29) | 96.81 (3.28) | 91.94 (2.39) | 95.58 (3.38) | |
| Female | 96.87 (3.26) | – | 97.88 (3.33) | 97.19 (3.28) | 92.73 (2.39) | 97.24 (3.48) | |
| Mean 2D:4Da | All | 96.45 (2.99) | – | 97.39 (3.10) | 96.76 (3.04) | 92.40 (2.12) | 96.90 (3.10) |
| Male | 95.96 (2.90) | – | 96.51 (3.01) | 96.48 (2.94) | 91.95 (2.13) | 95.42 (2.99) | |
| Female | 96.93 (3.00) | – | 98.14 (2.97) | 97.06 (3.12) | 92.71 (2.05) | 97.02 (3.07) |
a
Mean (SD).
b
Percent (number).