“…The potential predictor variables were chosen based on studies suggesting that barriers to vaccination are often related to sociodemographics, utilization of health care services, health status, and an individuals' preventive behavior. [13][14][15][16] Sociodemographic variables included age (18)(19)(20)(21)(22)(23)(24), and 50-64 years), race-ethnicity (non-Hispanic white, non-Hispanic black, Hispanic, other), gender, language (English, non-English), US census region, dependent children <18 years old (yes/ no), marital status (married, not married), education level (high school or less vs more than high school), employment status (employed vs unemployed), and total family income level (<$35 000, $35 000 up to $74 999, $75 000 up to $99 999, and ≥$100 000).…”