“…First, there are a limited number of studies to test the FDA’s GHW labels to investigate the segmentation effect on cognitive outcomes among vulnerable populations. There are existing studies about interaction effects within different sub-populations, however these studies have primarily focused on the overall effects of GHW exposure without considering the issue of matching (Bittencourt, Person, Cruz, & Scarinci, 2013; Guillaumier, Bonevski, & Christine, 2015; Guillaumier, Bonevski, Paul, Durkin, & D’Este, 2014; Mead, Cohen, Kennedy, Gallo, & Latkin, 2016; Trasher et al, 2012). Our study looked at GHWs matched with the population, so that it can more clearly demonstrate segmentation effect.…”