Table 1.

Outcome variables, questions, information sources, and response modes

Variables	Questions asked	Response	Information sources (25 items)
Use sources for health information	Do you get health information from the following sources?	1=Yes 0=No	▪ Primary care providers ▪ Nurses ▪ Specialist doctors ▪ Pharmacists ▪ Veterinarians ▪ Dentists ▪ Health fairs ▪ Newspaper ▪ Magazines ▪ Books ▪ Scientific literature ▪ Television ▪ Radio ▪ Search engines (e.g., Google, Yahoo, Bing, Ask, and AOL) ▪ Social media (e.g., Facebook, Twitter, YouTube, Google Plus+, and Instagram) ▪ Medical websites (e.g., WebMD, Mayo Clinic, Medscape, Medline Plus, and MedicineNet) ▪ Blogs or celebrity webpages (e.g., Dr. Oz) ▪ Local health department ▪ Federal government organizations (e.g., the Centers for Disease Control) ▪ Friends ▪ Family ▪ Religious organizations and leaders ▪ Scientists ▪ Pharmaceutical companies ▪ Other companies or corporations
Levels of trust in information sources	How much do you trust health information from the following sources?	1=Not at all 2=Some 3=Quite a bit 4=A great deal