[
  {
    "from": "prereg:7c7a61a8083de417055f927de2e96402ff34284e856671f5de4ae8bab0141001",
    "kind": "changed",
    "detail": "Outcome is crude opioid OD deaths per 100k instead of age-adjusted WONDER rates: WONDER API returned 403 and UI automation did not yield a validated state-year age-adjusted export before analysis. Prereg allowed this documented fallback.",
    "claims": [
      "C1"
    ]
  },
  {
    "from": "prereg:7c7a61a8083de417055f927de2e96402ff34284e856671f5de4ae8bab0141001",
    "kind": "changed",
    "detail": "Mortality uses mkiang public NCHS-derived state-year opioid and T40.4 counts for 2008-2016 and CDC VSRR xkb8-kh2a December 12-month-ending counts for 2017-2021, instead of a direct CDC WONDER MCD export CSV. These are the prereg-named fallbacks when WONDER export is unavailable.",
    "claims": [
      "C1"
    ]
  },
  {
    "from": "prereg:7c7a61a8083de417055f927de2e96402ff34284e856671f5de4ae8bab0141001",
    "kind": "unstated",
    "detail": "The 2017-2021 VSRR years form an unbalanced panel because some state-years lack drug-specific indicators; TWFE uses all complete state-years with non-missing synthetic share (n=601).",
    "claims": [
      "C1"
    ]
  }
]