By means of international recruitments and research collaborations it has established SUDA as a European and Nordic hub for register-based demographic research. A body of research on family-demographic change has focused on the gendered nature of such dynamics as reflected in fathers’ uptake of parental leave; some of it focusses on migrant fathers and emerging social divides in patterns of parental leave; other studies demonstrate the effects of policy reforms such as the reserved months for fathers in new modes of behavior.

One line of research has focused explicitly on the interrelation of different demographic processes, as observed in, e.g., the timing of childbearing, marriage and divorce in relation to migration, and how processes related to migration help produce depressed mortality levels of migrants. The latter phenomena are covered under headings such as migrant-mortality advantages and salmon effects in mortality.

Increased international migration to Sweden has made it even more imperative than before to cover the demographic careers of immigrants in Sweden. SUNDEM extends this line of research to also cover the so called second generation of the children to actual migrants.

This research has demonstrated somewhat depressed fertility of the second generation in Sweden as well as a pronounced diversity in outcomes related to marriage and divorce. SUNDEM’s family-demographic research also covers the dynamics of same-sex couples; a mortality study demonstrates decreasing levels of suicide mortality in sexual minorities.

A final line of research draws on the intergenerational linkages as provided in Swedish and Nordic registers. Some of it extends research on the intergenerational transmission of demographic behavior to also cover influences that stretch across several generations and that involve broader family networks than those of parents only. This research covers several aspects of family background, such as the role of sib-size, birth order, and length of birth intervals, in relation to fertility, mortality and cognitive outcomes later in life. Much of the new research in SUNDEM has been fostered in a number of PhD projects, which has helped establish an entire new generation of Swedish demographers.