By race:

By age:

By health status and insurance status:

By insurance status over time:

By health status over time:

By income over time:

By race over time:

Worried about potential bills 

Public polling:

By insurance status and health status:

By income:

By race:

By age:

Prevalence of out-of-network charges:

Emergency room visits:

In-patient admissions:

Mastectomies:

Heart attacks: