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Deceased subjects in each generation, n (%)
| Generation | Total | Deceased | Age at death (-x ± s, years) | Early childhood death* (% of the deceased cases) |
| Parent | 2958 | 1952 (66.0)b | 41.6 ± 26.2 | 359 (18.4) |
| Proband | 4273 | 1687 (39.5)b | 26.3 ± 22.3 | 563 (33.4) |
| Child | 2395 | 252 (10.5)b | 15.8 ± 16.8 | 119 (47.2) |
P < 0.001, among the generations;
Death before the age of five years.
