The supplemental .zip archive for this publication contains the following file. The Stata file was created using Version 14.2 and may not be compatible with earlier versions. 1. Stata program file: DR3732_replication_file.do Note that the working directory (line 36) and the location of the data (line 39) need to be set for the .do file to run The supplemental .zip archive does not contain a data file. The Families of Poles in the Netherlands (FPN) survey data are deposited at Data Archiving and Networked Services (DANS) / Royal Netherlands Academy of Arts and Sciences (KNAW). To request data access and, after access has been granted, download the data, visit: https://easy.dans.knaw.nl/ui/datasets/id/easy-dataset:64516