Table 3.
Descriptive statistics of human populations of hunter-gatherers (Ache and Hadza) and populations from Liberia, Sweden, and Japan
| Population | Sex | Person years | Deaths |
| Ache | Women | 6,738 | 151 |
| Men | 9,368 | 202 | |
| Total | 16,106 | 353 | |
| Hadza | Women | 6,218 | 182 |
| Men | 6,100 | 227 | |
| Total | 12,318 | 409 | |
| Liberia, 1820–1843 | Women | 1,973 | 1,135 |
| Men | 2,318 | 967 | |
| Total | 4,291 | 2,195 | |
| Sweden, 1751–1759 | Women | 8,736,291 | 232,161 |
| Men | 7,808,644 | 225,428 | |
| Total | 16,544,934 | 457,589 | |
| Sweden, 2000–2009 | Women | 45,582,428 | 475,035 |
| Men | 44,832,800 | 446,825 | |
| Total | 90,415,228 | 921,860 | |
| Japan, 2012 | Women | 64,657,932 | 600,833 |
| Men | 61,362,195 | 655,526 | |
| Total | 126,020,126 | 1,256,359 |
Person years are a combined measure of the number of individuals and the number of years they contributed to the study.