{
 "record_id": "78349a30196c9ee010a5b6087b25ddd2eb8a9b3d",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Economic Evaluation of the Indoor Environmental Quality of Buildings: The Noise Pollution Effects on Housing Prices in the City of Bari (Italy)",
  "year": 2021,
  "doi": "10.3390/buildings11050213",
  "country": "Italy",
  "region_city": "Bari (Apulia), four OMI municipal areas",
  "sample_start": 2017,
  "sample_end": 2019,
  "property_type": "condo_apartment",
  "price_type": "transaction",
  "data_source": "Residential sales 2017-2019 collected from local market operators; ARPA Puglia Strategic Noise Map 2017",
  "document_type": "journal",
  "estimators": [
   "ML_marginal"
  ],
  "spatial_method": "separate models per OMI area",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 800,
  "ai_methods": [
   "genetic algorithm (EPR-MOGA evolutionary polynomial regression)"
  ],
  "notes": "Evolutionary Polynomial Regression with multi-objective genetic algorithm; models are multiplicative polynomials in normalised variables (Table 2, p.15), without standard errors. Tables 3-6 report only sign of functional correlation and average percentage price variation per level step; extracted as ML marginal effects (x_transform other, se null, confidence medium). COD (coefficient of determination) recorded as r2. n_obs = 200 per area per abstract. Flag: use only in the AI/ML marginal-effects synthesis, not in the coefficient meta-analysis."
 },
 "models": [
  {
   "model_id": "T3-c1",
   "table": "3",
   "column": "1",
   "page": 16,
   "dep_var": "ln(Pr): natural log of total selling price (euro)",
   "dep_transform": "log",
   "estimator": "ML_marginal",
   "n_obs": 200,
   "r2": 0.8673,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "OMI central area of Bari (200 sales 2017-2019); EPR-MOGA evolutionary polynomial regression (Table 2 p.15 gives the fitted polynomial); table reports the average percentage variation of the total selling price for a one-level increase of each selected variable, other variables at sample means"
  },
  {
   "model_id": "T4-c1",
   "table": "4",
   "column": "1",
   "page": 16,
   "dep_var": "ln(Pr): natural log of total selling price (euro)",
   "dep_transform": "log",
   "estimator": "ML_marginal",
   "n_obs": 200,
   "r2": 0.8315,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "OMI semi-central area (200 sales); EPR-MOGA evolutionary polynomial regression (Table 2 p.15 gives the fitted polynomial); table reports the average percentage variation of the total selling price for a one-level increase of each selected variable, other variables at sample means"
  },
  {
   "model_id": "T5-c1",
   "table": "5",
   "column": "1",
   "page": 16,
   "dep_var": "ln(Pr): natural log of total selling price (euro)",
   "dep_transform": "log",
   "estimator": "ML_marginal",
   "n_obs": 200,
   "r2": 0.8314,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "OMI peripheral area (200 sales); table continues p.17; EPR-MOGA evolutionary polynomial regression (Table 2 p.15 gives the fitted polynomial); table reports the average percentage variation of the total selling price for a one-level increase of each selected variable, other variables at sample means"
  },
  {
   "model_id": "T6-c1",
   "table": "6",
   "column": "1",
   "page": 17,
   "dep_var": "ln(Pr): natural log of total selling price (euro)",
   "dep_transform": "log",
   "estimator": "ML_marginal",
   "n_obs": 200,
   "r2": 0.8171,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "OMI suburban area (200 sales); noise variable not selected by the model; EPR-MOGA evolutionary polynomial regression (Table 2 p.15 gives the fitted polynomial); table reports the average percentage variation of the total selling price for a one-level increase of each selected variable, other variables at sample means"
  }
 ],
 "coefficients": [
  {
   "model_id": "T3-c1",
   "var_name_printed": "Distance from the waterfront (Dl)",
   "taxonomy_id": "water_proximity",
   "x_transform": "other",
   "x_unit": "km (walking distance to Araldo di Crollalanza waterfront)",
   "beta": -3.56,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Maintenance conditions (Sc)",
   "taxonomy_id": "condition",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5 (to be restructured / fit for habitation / restructured)",
   "beta": 20.22,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Sound level in the street where the property is located (Ld)",
   "taxonomy_id": "noise",
   "x_transform": "other",
   "x_unit": "ordinal rating 1-7 of dB(A) classes (<=40 to 70-75 dB(A))",
   "beta": -3.31,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Lift (A)",
   "taxonomy_id": "accessibility",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 30.95,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Distance from the nearest railway station (Ds)",
   "taxonomy_id": "transit_distance",
   "x_transform": "other",
   "x_unit": "km (walking)",
   "beta": -3.01,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Floor level (L)",
   "taxonomy_id": "floor_level",
   "x_transform": "other",
   "x_unit": "count",
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   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T3-c1",
   "var_name_printed": "Size (S)",
   "taxonomy_id": "living_area",
   "x_transform": "other",
   "x_unit": "m2 (gross floor area)",
   "beta": 22.8,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Maintenance conditions (Sc)",
   "taxonomy_id": "condition",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5 (to be restructured / fit for habitation / restructured)",
   "beta": 19.49,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Distance from the waterfront (Dl)",
   "taxonomy_id": "water_proximity",
   "x_transform": "other",
   "x_unit": "km (walking distance to Araldo di Crollalanza waterfront)",
   "beta": 0.63,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Distance from the nearest railway station (Ds)",
   "taxonomy_id": "transit_distance",
   "x_transform": "other",
   "x_unit": "km (walking)",
   "beta": 2.48,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Perceived environmental quality level (Qn)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal score 1-5 (survey of residents)",
   "beta": 0.52,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Presence of parking (P)",
   "taxonomy_id": "parking",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 4.3,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Maintenance conditions of the building facades adjacent to the property (Sf)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5",
   "beta": 9.01,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Distance from the nearest public green space (Dv)",
   "taxonomy_id": "green_space",
   "x_transform": "other",
   "x_unit": "km (walking)",
   "beta": -1.14,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Sound level in the street where the property is located (Ld)",
   "taxonomy_id": "noise",
   "x_transform": "other",
   "x_unit": "ordinal rating 1-7 of dB(A) classes (<=40 to 70-75 dB(A))",
   "beta": -3.46,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
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   "model_id": "T4-c1",
   "var_name_printed": "Floor level (L)",
   "taxonomy_id": "floor_level",
   "x_transform": "other",
   "x_unit": "count",
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   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: parabolic); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Bathroom number (B)",
   "taxonomy_id": "bathrooms",
   "x_transform": "other",
   "x_unit": "count",
   "beta": 0.09,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Lift (A)",
   "taxonomy_id": "accessibility",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 8.85,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Road private and public vehicular traffic level (T)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal 1 (high traffic) / 3 / 5 (low traffic)",
   "beta": 3.08,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Size (S)",
   "taxonomy_id": "living_area",
   "x_transform": "other",
   "x_unit": "m2 (gross floor area)",
   "beta": 19.91,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "Distance from the nearest highway (Dt)",
   "taxonomy_id": "highway_distance",
   "x_transform": "other",
   "x_unit": "km (by car)",
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   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Distance from the nearest public green space (Dv)",
   "taxonomy_id": "green_space",
   "x_transform": "other",
   "x_unit": "km (walking)",
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   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Distance from the nearest railway station (Ds)",
   "taxonomy_id": "transit_distance",
   "x_transform": "other",
   "x_unit": "km (walking)",
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   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Perceived environmental quality level (Qn)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal score 1-5 (survey of residents)",
   "beta": 4.73,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Maintenance conditions (Sc)",
   "taxonomy_id": "condition",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5 (to be restructured / fit for habitation / restructured)",
   "beta": 8.69,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Maintenance conditions of the public spaces adjacent to the property (Sa)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5",
   "beta": 11.26,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Presence of parking (P)",
   "taxonomy_id": "parking",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 3.59,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Lift (A)",
   "taxonomy_id": "accessibility",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 16.72,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Floor level (L)",
   "taxonomy_id": "floor_level",
   "x_transform": "other",
   "x_unit": "count",
   "beta": 1.38,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Maintenance conditions of the building facades adjacent to the property (Sf)",
   "taxonomy_id": "other",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5",
   "beta": 2.52,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Distance from the nearest highway (Dt)",
   "taxonomy_id": "highway_distance",
   "x_transform": "other",
   "x_unit": "km (by car)",
   "beta": -2.85,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: parabolic); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Sound level in the street where the property is located (Ld)",
   "taxonomy_id": "noise",
   "x_transform": "other",
   "x_unit": "ordinal rating 1-7 of dB(A) classes (<=40 to 70-75 dB(A))",
   "beta": -2.47,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: negative); not a regression coefficient, no SE"
  },
  {
   "model_id": "T5-c1",
   "var_name_printed": "Size (S)",
   "taxonomy_id": "living_area",
   "x_transform": "other",
   "x_unit": "m2 (gross floor area)",
   "beta": 21.57,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T6-c1",
   "var_name_printed": "Distance from the waterfront (Dl)",
   "taxonomy_id": "water_proximity",
   "x_transform": "other",
   "x_unit": "km (walking distance to Araldo di Crollalanza waterfront)",
   "beta": 5.52,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T6-c1",
   "var_name_printed": "Distance from the nearest public green space (Dv)",
   "taxonomy_id": "green_space",
   "x_transform": "other",
   "x_unit": "km (walking)",
   "beta": 1.2,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T6-c1",
   "var_name_printed": "Maintenance conditions (Sc)",
   "taxonomy_id": "condition",
   "x_transform": "other",
   "x_unit": "ordinal 1/3/5 (to be restructured / fit for habitation / restructured)",
   "beta": 17.74,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T6-c1",
   "var_name_printed": "Lift (A)",
   "taxonomy_id": "accessibility",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 17.73,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  },
  {
   "model_id": "T6-c1",
   "var_name_printed": "Size (S)",
   "taxonomy_id": "living_area",
   "x_transform": "other",
   "x_unit": "m2 (gross floor area)",
   "beta": 0.88,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 17,
   "confidence": "medium",
   "notes": "Value is the average percentage variation (%) of the total selling price for a one-level/one-unit passage of the variable, derived from the EPR-MOGA polynomial (functional correlation: direct); not a regression coefficient, no SE"
  }
 ]
}