{
  "schema_version": 1,
  "causal_question": "In the shared rent-control sample, how did adoption affect monthly median rent in treated ZIP areas?",
  "outcome": "median_rent",
  "outcome_scale": "additive",
  "effect_family": "overall",
  "treatment_definition": "Absorbing rent-control adoption at January 2021, as encoded by treated_now.",
  "assignment_unit": "zip_id",
  "target_population": "observed treated units",
  "contrast": "treated versus eligible untreated controls",
  "assignment_rationale": "The benchmark documentation defines a simulated common-adoption design with clean parallel trends; these assumptions describe the sample generator, not a real policy.",
  "parallel_trends": "unconditional",
  "control_group": "never_treated",
  "anticipation": {
    "state": "confirmed_zero",
    "periods": 0,
    "reason_code": "user_confirmed_zero",
    "provenance": [
      "shared-benchmark-design"
    ]
  },
  "interference": "not_expected",
  "treatment_versions": "single_version",
  "decision_purpose": "exploratory",
  "analysis_profile": "quick",
  "horizon": [],
  "post_weights": [],
  "equivalence_margin": 10.0,
  "practical_significance_threshold": 10.0,
  "policy_threshold": null,
  "waivers": [],
  "schema_confirmed": true,
  "assumptions": [],
  "adjustment_set": {
    "covariates": [],
    "selected": [],
    "decision_purpose": "exploratory",
    "reason_code": "no_covariates_declared",
    "provenance": [
      "shared-benchmark-design"
    ]
  },
  "diagnostics": null,
  "inference": {
    "covariance": "auto",
    "cluster": "unit",
    "confidence_level": 0.95,
    "bootstrap": null,
    "repetitions": 99,
    "seed": 4111,
    "tolerance": 1e-08
  },
  "execution": {
    "backend": "numpy",
    "threads": 1,
    "chunk_size": 256,
    "cache_policy": "reuse",
    "warmup_policy": "on_demand",
    "deterministic": true
  }
}