{
  "task_id": "F6-conf-03",
  "sample_start": "1960-01-01",
  "sample_end": "2019-10-01",
  "n_sub1": 96,
  "n_sub2": 144,
  "baseline_metric": 0.32465793964999184,
  "model_metric": 0.2497438816636253,
  "effect_estimate": -0.2557677277487258,
  "intercept": 0.18438835418210714,
  "effect_se": 0.03598488399675878,
  "hac_lags": 4,
  "effect_ci_low": -0.3262968043702248,
  "effect_ci_high": -0.18523865112722682,
  "beta_sub1": -0.25902105345680587,
  "beta_sub2": -0.27339263306757905,
  "chow_f_stat": 6.0903330062337675,
  "chow_p_value": 0.002636323851733417,
  "stability_conclusion": "unstable",
  "conclusion": "negative_effect",
  "feasibility": "complete",
  "feasibility_reason": null,
  "data_issues": [
    {
      "issue": "UNRATE missing value(s) at ['2025-10-01'] (blank in raw FRED CSV)",
      "handling": "Outside the 1959Q4-2019Q4 window; quarter not formed and never used."
    },
    {
      "issue": "Both files extend beyond 2019Q4 (to 2026); GDPC1 is the current (2026) vintage, not real-time data.",
      "handling": "All data after 2019Q4 dropped before any computation; revised vintage used as given (ex-post analysis)."
    }
  ],
  "n_input_rows": {
    "GDPC1.csv": 319,
    "UNRATE.csv": 945
  },
  "n_analysed": 240,
  "random_seed": 0
}