1. 1Department of Sociology & Institute for Population Research, The Ohio State University, Columbus, Ohio, USA; email: browning.90@osu.edu
2. 2Centre for Social Investigation, Nuffield College, and Leverhulme Centre for Demographic Science, University of Oxford, Oxford, United Kingdom
3. 3Department of Statistics and Data Sciences & Population Research Center, The University of Texas, Austin, Texas, USA
4. 4Institute for Population Research, The Ohio State University, Columbus, Ohio, USA