Twin parameters
Sample . | Survival Rate, Nontwins . | Survival Rate, Twins . | Average Births per Marriage . | Same-Sex Ratio, Twins . | Same-Sex Ratio, Expected . |
---|---|---|---|---|---|
France, pre-1789 | 0.71 | 0.47 | 5.31 | 0.64 | 0.62 |
France, post-1789 | 0.70 | 0.41 | 4.66 | 0.68 | 0.61 |
England, CAMPOP | 0.70 | 0.46 | 4.66 | 0.59 | 0.70 |
England, 1780–1879 | 0.65 | 0.55 | 5.96 | 0.64 | 0.72 |
England, 1900–1949 | 0.91 | 0.72 | 3.37 | 0.55 | 0.63 |
Québec | 0.71 | 0.52 | 5.64 | 0.68 | 0.65 |
Sample . | Survival Rate, Nontwins . | Survival Rate, Twins . | Average Births per Marriage . | Same-Sex Ratio, Twins . | Same-Sex Ratio, Expected . |
---|---|---|---|---|---|
France, pre-1789 | 0.71 | 0.47 | 5.31 | 0.64 | 0.62 |
France, post-1789 | 0.70 | 0.41 | 4.66 | 0.68 | 0.61 |
England, CAMPOP | 0.70 | 0.46 | 4.66 | 0.59 | 0.70 |
England, 1780–1879 | 0.65 | 0.55 | 5.96 | 0.64 | 0.72 |
England, 1900–1949 | 0.91 | 0.72 | 3.37 | 0.55 | 0.63 |
Québec | 0.71 | 0.52 | 5.64 | 0.68 | 0.65 |