Age and sex distribution of the cohort and constitutively normal hearts
| ⩽35 years | >35 years | Total | |
|---|---|---|---|
| F, female; M, male. | |||
| Overall | |||
| F | 75 | 100 | 175 (38.6%) |
| M | 148 | 130 | 278 (61.4%) |
| Total | 223 | 230 | 453 |
| Normal hearts (59.3%) | |||
| F | 52 | 55 | 107 (39.8%) |
| M | 92 | 70 | 162 (60.2%) |
| Total | 144 | 125 | 269 |