Grandchild care and eldercare. A quid pro quo arrangement

Here are the codes based on data from the SHARE survey which make it possible to create the database(s) to reproduce the results of the paper on intergenerational care from adult children at time 2 which is conditional on the help given to grandchildren at time 1.
There are 4 files to show that reciprocity of care exists when dependence occurs and that the more help you provided in period 1, the more support you get in period 2.
The raw data can be downloaded on the website of SHARE-ERIC: https://share-eric.eu/