1{2 "task_id": "F6-conf-02",3 "sample_start": "2010-01-04",4 "sample_end": "2019-12-31",5 "n_treated": 0,6 "baseline_metric": -0.042851421706047235,7 "model_metric": null,8 "effect_estimate": null,9 "effect_ci_low": null,10 "effect_ci_high": null,11 "conclusion": "premise_invalid",12 "feasibility": "infeasible",13 "feasibility_reason": "The file covers 2010-01-04 to 2019-12-31 and contains no rows with post_cut=1 (the cut was announced 2020-03-04), so the post-cut mean change and the 120-day pre-window anchored on the first treated day do not exist.",14 "data_issues": [15 {16 "issue": "Coverage ends 2019-12-31 (README: Valet query end_date=2019-12-31), before the 2020-03-04 cut; post_cut is 0 for all 2498 rows, so there are zero treated days",17 "handling": "Estimand not computable; effect, CI and model RMSE set to null, conclusion premise_invalid. post_cut not redefined and no proxy event or extrapolation substituted."18 },19 {20 "issue": "6 calendar gaps of 5 days (year-end holidays, e.g. 2010-12-29); one-day changes span non-trading days",21 "handling": "kept; changes defined between consecutive rows per the task rule"22 }23 ],24 "n_input_rows": {25 "gc5y_daily.csv": 249826 },27 "n_analysed": null,28 "random_seed": null,29 "n_changes": 2497,30 "n_missing_rows": 0,31 "n_duplicate_dates": 0,32 "baseline_change_sd_bp": 4.23632863782724733}