Fig. 2
From: Associations between environmental quality and infant mortality in the United States, 2000–2005
Adjusted ORs (95% CI) for linear combinations of overall EQI/domain-specific indices and rural-urban status for infants of Non-Hispanic White mothers, United States (2000–2005). RUCC 1: metropolitan urbanized areas, RUCC 2: non-metropolitan urbanized areas, RUCC 3: less urbanized, RCC 4: thinly populated areas. Both the overall EQI (a) and the five domain-specific indices (b-f) were modeled as quartiles, with the first quartile indicating best quality and the fourth indicating worst