Descriptive characteristics of study participants
| Characteristics | Value |
|---|---|
| Sample information | |
| No. of samples | 1008 |
| No. of females (%) | 520 (51.6) |
| Mean (SD) age (in years) | 31.0 (15.5) |
| No. of sample with PPA score (%) | |
| ≥70 | 268 (26.6) |
| ≥60 | 357 (35.4) |
| <60 | 651 (64.6) |
| <50 | 594 (58.9) |
| Family information | |
| No. of families | 73 |
| Mean size (SD) of family members | 19.61 (11.3) |
| No. of pairs | |
| Parent–offspring | 1794 |
| Full-sibling | 734 |
| Sister–sister | 198 |
| Brother–brother | 167 |
| Sister–brother | 369 |
| Half-sibling | 395 |
| Grandparent–grandchild | 1202 |
| Avuncular pairs | 888 |
| First cousins | 598 |
PPA, pitch-production accuracy.