“… Rahimi and Hashemi Nazari, 2021 ). In prior work, conventional mediation analyses have been performed to assess whether ethnic differences in bodyweight are partly mediated by demographic factors, such as parity (e.g., Bacong and Sohn, 2021 , Sohn and Bacong, 2021 ). The implicit assumption underlying such analyses is that associations between the demographic factors considered and bodyweight do not differ between the groups compared.…”