{
  "citation": "statsmodels 0.15.0: the reference specification of cheng_hoekstra_2013 tab5_pb_c2 (infer.ols, figure 'coef.cdl') on an independent code path",
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  "independent": true,
  "item_set": null,
  "kind": "software",
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  "licence": null,
  "locator": "cheng_hoekstra_2013: NBER Working Paper 18134, Table 5, Panel B 'Log Homicide Rate (OLS - Unweighted)', column (2) adding region-by-year fixed effects, row 'Castle Doctrine Law'",
  "metric": null,
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  "read_copy_sha256": null,
  "retrieved_at": "2026-10-15",
  "se": 0.08087017349667114,
  "se_as_published": null,
  "source_id": "cheng_hoekstra_2013.tab5_pb_c2.software",
  "tolerance_reason": null,
  "units": null,
  "url": "https://pypi.org/project/statsmodels/0.15.0/",
  "value": 0.08109024141547702,
  "value_as_published": null,
  "verified_by": "software_run",
  "verified_note": "sm.OLS(l_homicide, add_constant(['cdl', 'r20001', 'r20002', 'r20003', 'r20004', 'r20011', 'r20012', 'r20013', 'r20014', 'r20021', 'r20022', 'r20023', 'r20024', 'r20031', 'r20032', 'r20033', 'r20034', 'r20041', 'r20042', 'r20043', 'r20044', 'r20051', 'r20052', 'r20053', 'r20054', 'r20061', 'r20062', 'r20063', 'r20064', 'r20071', 'r20072', 'r20073', 'r20074', 'r20081', 'r20082', 'r20083', 'r20084', 'r20091', 'r20092', 'r20093', 'r20094', 'r20101', 'r20102', 'r20103', 'r20104']), fe dummies ['sid', 'year']; 91 independent columns).fit(cov_type='cluster', groups=sid) on castle (the file pinned at sha256 804633c161827b6c0824f86f239046386d1a8266a866f83bf5ddb2aa762a5f29); n_obs = 550. The tool infer.ols (magi_infer, numpy) does not call statsmodels. Written by scripts/paper_repro_reference.py."
}