Table 1.

Descriptive statistics. RS, reproductive success; IS, infant survival. Numbers in parentheses are standard deviations. Years refer to the birth years of the anchors. For twentieth-century Sweden, fertility-related numbers are from 1947 to 1959 (first N given) and mortality numbers are from 1969 to 2000 (second N given).

1720–1850
Krummhörn
1670–1750
Québec
1760–1850
Sweden
twentieth-century Sweden
population N80 808459 591271 1308 201 968
anchor N14 03479 89556 9471 419 282/3 428 225
anchors/families (RS models)9447/218668 724/12 20556 663/14 7461 408 177/884 975
anchors/families (IS models)9447/218661 493/11 94056 010/14 708363 744/200 000
paternal age35.23 (7.56)36.28 (8.48)34.37 (7.69)31.84 (7.05)
maternal age31.53 (5.88)29.58 (6.66)31.54 (6.32)28.34 (6.11)
female/male infant mortality11.1/12.9%19.0/23.2%12.0/14.1%0.5/0.7%
fertility (married women)3.66 (2.89)7.71 (4.57)3.6 (3.17)2.15 (1.11)
male age at first child29.29 (5.36)27.92 (5.29)28.13 (5.18)28.07 (5.6)
male age at last child39.6 (7.5)44.19 (8.59)37.52 (8.29)33.57 (6.14)