“…The following abstracted data variables were categorized based on a previous study. 5 Demographic information of interest included age (in years), race/ ethnicity (white, black, Hispanic, other, or unknown), year of diagnosis, insurance type (private, Medicare, Medicaid, uninsured, other government or unknown), median household income (<$38,000, $38,000e47,999, $48,000e62,999, $63,000), education (measured as percentage of adults in the patient's zip code who did not graduate from high school and grouped as 21%, 13%e20%, 7.0%e12.9%, <7%), and urbanerural location (metropolitan, urban, rural, or unknown).…”