{
  "record_id": "c7b242d28013321bceaeef0f994fd2d0dab032c0",
  "eligible": true,
  "exclusion_reason": null,
  "study": {
    "title": "Implicit Prices in Urban Real Estate Valuation",
    "year": 2013,
    "doi": "10.4067/s0718-915x2013000200009",
    "country": "Spain",
    "region_city": "Córdoba",
    "sample_start": null,
    "sample_end": null,
    "property_type": "condo_apartment",
    "price_type": "transaction",
    "data_source": "Real estate brokerage companies operating in Córdoba (random sample of 2888 transactions of flats and apartments over a one-year period; year not stated)",
    "document_type": "journal",
    "estimators": ["OLS"],
    "spatial_method": "none",
    "time_fe": false,
    "location_fe": false,
    "se_type": "OLS",
    "n_obs_total": 2888,
    "ai_methods": ["neural_network (MLP 6:6-6-1:1, predictive comparison only, no marginal effects tabulated)"],
    "notes": "Linear hedonic model in levels (sales price in euros) with one interaction term; composite indices (location, annexes) scaled to [0,1]. Table 3 reports coefficient, standard error, t-Student and Prob. R2 = 0.7738. NN model only compared on fit (Table 4)."
  },
  "models": [
    {
      "model_id": "T3-c1",
      "table": "3",
      "column": "1",
      "page": 7,
      "dep_var": "Sales price (euros)",
      "dep_transform": "level",
      "estimator": "OLS",
      "n_obs": 2888,
      "r2": 0.7738,
      "se_or_t_in_parentheses": "se",
      "sample_subset": "full sample; n=2888 stated in text (p. 6), not in table"
    }
  ],
  "coefficients": [
    {"model_id": "T3-c1", "var_name_printed": "Surface", "taxonomy_id": "living_area", "x_transform": "level", "x_unit": "m2", "beta": 1109.951, "se": 83.62050, "t": 13.27368, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "size of the flat in square metres including common areas"},
    {"model_id": "T3-c1", "var_name_printed": "Age", "taxonomy_id": "age", "x_transform": "level", "x_unit": "years", "beta": -1067.449, "se": 173.5725, "t": -6.149872, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "age of the building"},
    {"model_id": "T3-c1", "var_name_printed": "Location", "taxonomy_id": null, "x_transform": "other", "x_unit": "index", "beta": 64297.29, "se": 5494.403, "t": 11.70232, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "composite location index in [0,1] (position in city, area characteristics, income of the zone); no single taxonomy leaf (mix of cbd_distance/income)"},
    {"model_id": "T3-c1", "var_name_printed": "Annexes", "taxonomy_id": "garage", "x_transform": "other", "x_unit": "index", "beta": 18458.66, "se": 4572.246, "t": 4.037111, "p": 0.0001, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "medium", "notes": "annex index in [0,1] combining garage and store room; mapped to garage (composite)"},
    {"model_id": "T3-c1", "var_name_printed": "Expenses", "taxonomy_id": null, "x_transform": "level", "x_unit": "currency", "beta": 1296.708, "se": 105.9213, "t": 12.24218, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "community expenses in euros; not a taxonomy characteristic"},
    {"model_id": "T3-c1", "var_name_printed": "Pav xCarp", "taxonomy_id": "condition", "x_transform": "other", "x_unit": "index", "beta": 5117.270, "se": 504.0529, "t": 10.15225, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "medium", "notes": "interaction between pavement (floor) condition and external carpentry quality variables"}
  ]
}