Health selection is often measured by comparing the health of more recent immigrants to the native born of their new host country. However, this comparison fails to take into account two important factors: (1) that changes in the health profile of sending countries may impact the health of immigrants over time, and (2) that the best comparison group for health selection would be @entity1 who remain in the country of origin. Obesity represents an important health outcome that may be best understood by taking into account these two factors. Using nationally-representative datasets from Mexico and the US, we examined differences in @entity28 -related health selection, by gender, in 2000 and 2012. We calculated prevalence ratios from log-binomial models to compare the risk of @entity28 among recent immigrants to the US to Mexican nationals with varying likelihood of migration, in order to determine changes in health selection over time. Among @entity1 in 2000, we found little difference in @entity28 status between recent immigrants to the US and Mexican non-migrants. However, in 2012, Mexican @entity1 who were the least likely to migrate had higher @entity28 prevalence than recent immigrants, which may reflect emerging health selection. The trends for @entity1 , however, indicated differences in @entity28 status between recent Mexican immigrants and non-migrants at both time points. In both 2000 and 2012, Mexican national @entity1 had significantly higher @entity28 prevalence than recent immigrant @entity1 , with the biggest difference between recent immigrants and Mexican @entity1 who were least likely to migrate. There was also indication that selection increased with time for @entity1 , as the differences between Mexican nationals and recent immigrants to the US grew from 2000 to 2012. Our study is among the first to use a binational dataset to examine the impact of health selectivity, over time, on @entity28 .

Changes in health selection of XXXX among Mexican immigrants: A binational examination.

@entity1 :: ('9606', 'Species') :: ['men', 'people', 'women'] @entity28 :: ('MESH:D009765', 'Disease') :: ['obesity']
@entity28 :: (MESH:D009765,Disease) :: ['obesity']
