{
  "paper": {
    "rank": 30,
    "paper_id": "aeraej-122",
    "title": "How Merchant Towns Shaped Parliaments: From the Norman Conquest of England to the Great Reform Act",
    "authors": "Charles Angelucci; Simone Meraglia; Nico Voigtl\u00e4nder",
    "year": 2022,
    "journal": "American Economic Review",
    "doi": "10.1257/aer.20200885",
    "package_bytes": 58991301,
    "source_specification": "Table 2",
    "selection_stratum": "binary_did"
  },
  "mapping": {
    "paper_id": "aeraej-122",
    "match": true,
    "assessment_status": "unsupported_design",
    "unsupported": "The selected source is a medieval borough cross-section: parliamentary representation in 1348 on prior Farm Grant status and royal-borough status. There is no pre/post outcome clock."
  },
  "status": "unsupported_design",
  "source_fit": {
    "formula": "list(linear = Parliament_1348 ~ grant_farm_1348 + royal_borough)",
    "coefficients": {
      "(Intercept)": 0.117298921125383,
      "grant_farm_1348": 0.438717155774553,
      "royal_borough": 0.161352136291506
    },
    "se": {
      "(Intercept)": 0.0168672975571501,
      "grant_farm_1348": 0.064877483373857,
      "royal_borough": 0.0505387292337758
    },
    "n": 549
  },
  "reason": "The selected source is a medieval borough cross-section: parliamentary representation in 1348 on prior Farm Grant status and royal-borough status. There is no pre/post outcome clock."
}