| N (% females) | Age at ECG (years) | QTc (ms) |
---|---|---|---|
All participants | 312 (58) | 31 ± 22 | 464 ± 38 |
Genotype positive | 227 (59) | 31 ± 21 | 476 ± 36 |
  KCNQ1 Y111C | 148 (57) | 32 ± 22 | 483 ± 34 |
  KCNQ1 R518* | 79 (62) | 29 ± 19 | 462 ± 34 |
Genotype negative | 85 (55) | 33 ± 23 | 433 ± 24 |