{
 "record_id": "66b74975968370c75371207845d963de2413a23e",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Does urban centrality influence residential prices? An analysis for the Barcelona Metropolitan Area",
  "year": 2017,
  "doi": "10.7764/rdlc.16.1.57",
  "country": "Spain",
  "region_city": "Barcelona Metropolitan Region (137 municipalities)",
  "sample_start": 2014,
  "sample_end": 2014,
  "property_type": "condo_apartment",
  "price_type": "listing",
  "data_source": "Habitaclia.com sale listings of flats, November 2014 (35,116 cases, 3,479 retained with EPC class and after outlier trimming); 2001 census, cadastre, 2001 metropolitan mobility survey (300 m buffers)",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none",
  "time_fe": false,
  "location_fe": false,
  "se_type": "OLS",
  "n_obs_total": 3479,
  "ai_methods": [],
  "notes": "Revista de la Construccion 16(1). Log-linear model of asking prices of multifamily flats; Table 3 reports unstandardized B, Std. Error, standardized Beta, t and Sig. (p) for the 14 retained significant variables (constant 10.297). Unit of energy coefficient: 0.9% per EPC step. No time or location fixed effects (location controlled by continuous census/cadastre/mobility variables)."
 },
 "models": [
  {
   "model_id": "T3-m14",
   "table": "3",
   "column": "Model 14",
   "page": 7,
   "dep_var": "ln asking (listing) price of flat, euros",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 3479,
   "r2": 0.653,
   "se_or_t_in_parentheses": "se",
   "sample_subset": "Final model (14) after stepwise family of models and Mahalanobis outlier removal; only variables significant at 95% retained; adjusted R2 0.652; SE, standardized beta, t and Sig. in separate columns"
  }
 ],
 "coefficients": [
  {
   "model_id": "T3-m14",
   "var_name_printed": "Area (Sq. M.)",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 0.018,
   "se": 0.001,
   "t": 23.435,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Floor area of flat in m2 (quadratic specification with Area^2)"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Residents with university degree (%)",
   "taxonomy_id": "education_level",
   "x_transform": "level",
   "x_unit": "percentage points (share of residents with university degree, census tract, 300 m buffer)",
   "beta": 0.005,
   "se": 0.001,
   "t": 4.452,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "2001 census, census-tract level"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "AC",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.101,
   "se": 0.013,
   "t": 7.503,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Air conditioning dummy"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Area (Sq. M.)^2",
   "taxonomy_id": "living_area",
   "x_transform": "squared",
   "x_unit": "m2 squared",
   "beta": -4.104e-05,
   "se": null,
   "t": -11.88,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Squared floor area; SE printed as 0.000 (rounded), not recorded; t = -11.880"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Built density",
   "taxonomy_id": "density",
   "x_transform": "level",
   "x_unit": "floor area ratio (m2 of floor space per m2 of land, zone)",
   "beta": 0.038,
   "se": 0.006,
   "t": 6.264,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Built density of the zone used as a continuous centrality indicator; not population density"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Interaction lift*story level",
   "taxonomy_id": "floor_level",
   "x_transform": "other",
   "x_unit": "storey number x (+1 if lift present, -1 otherwise)",
   "beta": 0.013,
   "se": 0.002,
   "t": 5.846,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Interaction of floor level with lift presence (coded +1/-1); x_transform other"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Swiming pool",
   "taxonomy_id": "pool",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.136,
   "se": 0.026,
   "t": 5.204,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Condominium swimming pool dummy"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Number of baths",
   "taxonomy_id": "bathrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.062,
   "se": 0.012,
   "t": 5.189,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Number of bathrooms"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Heating",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.046,
   "se": 0.013,
   "t": 3.453,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Heating dummy"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "PCA factor for high professional profile",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "PCA factor score (socio-professional status of residents, zone)",
   "beta": 0.061,
   "se": 0.014,
   "t": 4.466,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Neighbourhood socio-professional status (managerial/professional residents); taxonomy other"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Residential buildings with doorkeeper (%)",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "percentage points (share of residential buildings with doorkeeper service, zone)",
   "beta": 0.005,
   "se": 0.001,
   "t": 4.128,
   "p": 0.0,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Neighbourhood status proxy; taxonomy other"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Centrality synthetic index",
   "taxonomy_id": "employment_access",
   "x_transform": "level",
   "x_unit": "index (DP2 synthetic centrality index from spatio-temporal behaviour of population, range 2.52-20.41)",
   "beta": 0.01,
   "se": 0.003,
   "t": 3.481,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Continuous centrality indicator based on time-geography (activities, not only employment); mapped to employment_access as an accessibility index"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Renewal",
   "taxonomy_id": "renovation",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.043,
   "se": 0.017,
   "t": 2.512,
   "p": 0.012,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "Renewed/renovated flat dummy"
  },
  {
   "model_id": "T3-m14",
   "var_name_printed": "Energy qualification",
   "taxonomy_id": "energy_efficiency",
   "x_transform": "level",
   "x_unit": "ordinal 1-7 EPC class (Table 1 codes 1=A most efficient, 7=G least efficient)",
   "beta": 0.009,
   "se": 0.004,
   "t": 2.076,
   "p": 0.038,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "medium",
   "notes": "Positive coefficient interpreted by the author as +0.9% per step up the efficiency ladder (A-G gap 5.11%), which implies the regression coding runs from least to most efficient, opposite to the Table 1 note; direction ambiguous"
  }
 ]
}