{
 "record_id": "281b355bd08bd1b8b228829d9c97b819d0d2a4d1",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Impact of Air Pollution on Property Values: A Hedonic Price Study",
  "year": 2013,
  "doi": "10.23917/jep.v14i1.150",
  "country": "Indonesia",
  "region_city": "Yogyakarta Special Region (city of Yogyakarta and Sleman regency)",
  "sample_start": null,
  "sample_end": null,
  "property_type": "single_family",
  "price_type": "transaction",
  "data_source": "Structured questionnaire survey of 250 households (self-reported house sales price); BLH DIY air quality monitoring 2010",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 250,
  "ai_methods": [],
  "notes": "Survey year not stated (CO data refer to 2010). Reported R2 is adjusted R2. Table 6 (inverse demand function, second stage) not extracted. Dependent variable natural log of house price in Rupiah."
 },
 "models": [
  {
   "model_id": "T4-c1",
   "table": "4",
   "column": "Full Model",
   "page": 9,
   "dep_var": "ln PPRICE (house sales price, Rupiah)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 250,
   "r2": 0.766,
   "se_or_t_in_parentheses": "t",
   "sample_subset": "All variables"
  },
  {
   "model_id": "T4-c2",
   "table": "4",
   "column": "Fit Model",
   "page": 9,
   "dep_var": "ln PPRICE (house sales price, Rupiah)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 250,
   "r2": 0.763,
   "se_or_t_in_parentheses": "t",
   "sample_subset": "Insignificant variables dropped"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnLANDSIZE",
   "taxonomy_id": "lot_size",
   "x_transform": "log",
   "x_unit": "m2",
   "beta": 0.553,
   "se": null,
   "t": 7.84,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Plot area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnLANDSIZE",
   "taxonomy_id": "lot_size",
   "x_transform": "log",
   "x_unit": "m2",
   "beta": 0.528,
   "se": null,
   "t": 7.658,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Plot area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnBUILDSIZE",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "m2",
   "beta": 0.113,
   "se": null,
   "t": 1.38,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Building area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnBUILDSIZE",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "m2",
   "beta": 0.164,
   "se": null,
   "t": 2.093,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Building area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnNUMROOM",
   "taxonomy_id": "bedrooms",
   "x_transform": "log",
   "x_unit": "count",
   "beta": 0.094,
   "se": null,
   "t": 1.179,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Number of rooms (all rooms); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "WSTRUCTDUM",
   "taxonomy_id": "roof_materials",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.067,
   "se": null,
   "t": -1.088,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Wall structure dummy; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISSCHOOL",
   "taxonomy_id": "school_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": -0.071,
   "se": null,
   "t": -1.809,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnDISSCHOOL",
   "taxonomy_id": "school_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": -0.068,
   "se": null,
   "t": -1.91,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISHPITAL",
   "taxonomy_id": "hospital_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": -0.085,
   "se": null,
   "t": -1.98,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnDISHPITAL",
   "taxonomy_id": "hospital_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": -0.075,
   "se": null,
   "t": -1.885,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISSPMARKET",
   "taxonomy_id": "commercial_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": 0.023,
   "se": null,
   "t": 0.56,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Distance from supermarket; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISREST",
   "taxonomy_id": "neighbourhood_amenities",
   "x_transform": "log",
   "x_unit": "m",
   "beta": -0.023,
   "se": null,
   "t": -0.652,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Distance from restaurant; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISCITY",
   "taxonomy_id": "cbd_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": 0.054,
   "se": null,
   "t": 1.274,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Distance from city; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnDISCITY",
   "taxonomy_id": "cbd_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": 0.064,
   "se": null,
   "t": 1.538,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Distance from city; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnDISMSTREET",
   "taxonomy_id": "highway_distance",
   "x_transform": "log",
   "x_unit": "m",
   "beta": 0.024,
   "se": null,
   "t": 1.03,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Distance from main street; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "GARDENDUM",
   "taxonomy_id": "garden",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.129,
   "se": null,
   "t": 1.673,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Dummy for close to garden; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LnCO",
   "taxonomy_id": "air_pollution",
   "x_transform": "log",
   "x_unit": "ug/m3",
   "beta": -1.305,
   "se": null,
   "t": -13.115,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Carbon monoxide concentration (2010 ambient monitoring); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LnCO",
   "taxonomy_id": "air_pollution",
   "x_transform": "log",
   "x_unit": "ug/m3",
   "beta": -1.375,
   "se": null,
   "t": -15.066,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 9,
   "confidence": "medium",
   "notes": "Carbon monoxide concentration (2010 ambient monitoring); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"
  }
 ]
}