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": 0.0358346333029657,12 "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": 6.090333006233798,18 "chow_p_value": 0.0026363238517333456,19 "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 1959Q4-2019Q4 estimation window; no effect on estimates"27 },28 {29 "issue": "Observations after 2019Q4 present in both files (incl. 2020 COVID outliers); GDPC1 is the 2026 vintage (revised data, chained 2017 $)",30 "handling": "post-2019Q4 data excluded per task; current vintage used as provided (log growth rates invariant to base year)"31 },32 {33 "issue": "Large (|z|>4) in-sample observations: ['1975Q1', '2009Q1']",34 "handling": "retained (genuine recession/recovery quarters); influence discussed in report"35 }36 ],37 "n_input_rows": {38 "GDPC1.csv": 319,39 "UNRATE.csv": 94540 },41 "n_analysed": 240,42 "random_seed": null43}