3 Method

Within the IDI environment, intergenerational links were created through subsetting and merging the dataset using the procedure as follows:

1. Birth dates were categorised into decades starting from 1880 to 2020.

2. Two subsets were created: separating child links to parent1 and child links to parent2.

3. By decade, assess the proportion of parent1’s and parent2’s who themselves appear as a child in the DIA records