Exhibit 8. Sharing Health Information Online (Multivariate Logistic Model) insulin-like growth factor Privately insured adults more likely than all others to use mHealth on their cell phones Self-Management mHealth Tools (ALL CELL PHONE USERS):On your cell phone, do you happen to have any software applications or “apps” that help you track or

manage your health, or not? Only self-reported cell phone users were asked to respond yes, no, don’t know, or refused to the above question. The majority of survey respondents had a cell phone and a landline phone. Over 75% of privately insured adults and slightly over 50% of each of the other insurance groups had a cell phone. More than half of adults from all insurance groups except for those on Medicare (20%) accessed the Internet from a cell phone, tablet, or other mobile handheld device. More than 85% of cell phone users from all insurance types did not use mHealth applications on their cell phones (Exhibit

9). Among cell phone users, 15% of privately insured adults, five times as many Medicare beneficiaries (3%), used health “apps” on their mobile devices. The unadjusted percent of privately insured adults using mHealth was almost double the share of Medicaid beneficiaries and the uninsured using health “apps” on their cell phones. The magnitude of these differences in mHealth use by insurance type decreased after adjustment (e.g., OR= 0.58 for Medicare vs. privately insured adults, 95% CI: 0.45–0.75; OR= 0.53 for Medicaid vs. privately insured adults,

95% CI: 0.42–0.67; OR= 0.52 for the uninsured vs. privately insured adults, 95% CI: 0.44–0.62, Exhibit 6). Exhibit 9. Percent Reporting mHealth Usage through Cell Phone Applications, by Insurance Type (unadjusted percent) Medicare beneficiaries more likely than privately insured adults to text with health care professionals Text Communication (ONLY CELL PHONE USERS WHO SEND/RECEIVE TEXTS): Do you receive any TEXT updates or alerts about health or medical issues, such as from your doctors or pharmacists? Only self-reported cell phone users who send/receive texts were asked to respond yes, no, don’t know, or refused to the above question. Few respondents reported receiving text messages from health professionals (Exhibit 10). More Medicare beneficiaries (23%) reported receiving GSK-3 text messages than did privately insured adults. Before and after adjustment (Exhibit 11), Medicare beneficiaries were more likely to have received text updates or alerts about health or medical issues from doctors or pharmacists than respondents with private insurance coverage (unadjusted OR= 3.10, 95% CI: 2.64–3.63; adjusted OR=2.65, 95% CI: 2.18–3.23). Exhibit 10. Percent Reporting Texting with Health Professionals, by Insurance Type (Unadjusted Percent) Exhibit 11.