Based on a patient survey with women of the age 21-65 who were not screened in the past 5 years, 56% of non-screeners had health insurance and a primary care physician. The “Under-engaged population” are unscreened largely due to lack of awareness reasons.
Other useful links:
http://www.cdc.gov/mmwr/preview/mmwrhtml/mm63e1105a1.htm
http://www.cancer.gov/types/cervical
http://www.cancer.org/cancer/cervicalcancer/index