5 Conclusion

Using DIA data in the IDI, one-generation intergenerational links are possible for large proportions of the New Zealand population for recent generations (since 2001) only. Numbers drop away prior to 2001. Multigenerational (2+ generation) links are likely to exist for a small proportion of recent generations (two generation links for 20-30% of those born since 2011; three generation links for <6% of those born since 2011; four generation links are unlikely to exist at all).