Illustration of relationship between mental health outcomes and exposure to the DHOS, over time. WaTCH Sample, Louisiana, 2012–2016. Panel A shows the relationship between depressive symptoms and years since the oil spill, by economic exposure category. Panel B shows the relationship between depressive symptoms and years since the oil spill, by physical exposure category. Panel C shows the relationship between mental distress and years since the oil spill, by economic exposure category. Panel D shows the relationship between mental distress and years since the oil spill, by physical exposure category.