The following originally appeared on The Upshot (copyright 2015, The New York Times Company). Researchers who want to study Medicare or Medicaid patients with substance-use disorders — and illnesses disproportionately affecting them like H.I.V. and hepatitis C — are, at best, working with biased data. At worst, they’re flying blind. That’s because agencies within the Department of … Continue reading Balancing privacy, research, and care delivery