1{2 "task_id": "F6-conf-03",3 "sample_start": "1960-01-01",4 "sample_end": "2019-10-01",5 "n_sub1": 96,6 "n_sub2": 144,7 "baseline_metric": 0.32465793964999184,8 "model_metric": 0.2497438816636253,9 "effect_estimate": -0.2557677277487258,10 "intercept": 0.18438835418210714,11 "effect_se": 0.03583463330296569,12 "hac_lags": 4,13 "effect_ci_low": -0.32600231842173816,14 "effect_ci_high": -0.18553313707571345,15 "beta_sub1": -0.25902105345680587,16 "beta_sub2": -0.27339263306757905,17 "chow_f_stat": 6.0903330062337675,18 "chow_p_value": 0.002636323851733417,19 "stability_conclusion": "unstable",20 "conclusion": "negative_effect",21 "feasibility": "complete",22 "feasibility_reason": null,23 "data_issues": [24 {25 "issue": "UNRATE.csv: missing value(s) at ['2025-10-01']",26 "handling": "outside the 1959Q4-2019Q4 window needed; not used"27 },28 {29 "issue": "Post-2019 observations (incl. COVID-19 2020 outliers) present in files",30 "handling": "excluded per task; no estimate uses quarters after 2019Q4"31 },32 {33 "issue": "GDPC1 is the current (2026) vintage, revised long after the fact; not real-time data",34 "handling": "used as is (task asks for a historical relationship); noted as limitation"35 }36 ],37 "n_input_rows": {38 "GDPC1.csv": 319,39 "UNRATE.csv": 94540 },41 "n_analysed": 240,42 "random_seed": 043}