{
 "record_id": "0795e1f2569ab3c9b87c0451960aa54739093319",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Performance of Multiple Linear Regression and Nonlinear Neural Networks and Fuzzy Logic Techniques in Modelling House Prices",
  "year": 2012,
  "doi": "10.3844/jmssp.2012.419.434",
  "country": "Australia",
  "region_city": "Bathurst, New South Wales",
  "sample_start": 1992,
  "sample_end": 2004,
  "property_type": "single_family",
  "price_type": "transaction",
  "data_source": "Bathurst house sales 1992-2004 (approx. 4,210 sales across 15 suburbs, Table 3) with GIS-derived location attributes and land values",
  "document_type": "journal",
  "estimators": [
   "OLS",
   "ML_marginal"
  ],
  "spatial_method": "none (map coordinates X, Y as regressors)",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 4210,
  "ai_methods": [
   "neural_network",
   "ANFIS neuro-fuzzy"
  ],
  "notes": "Journal of Mathematics and Statistics 8(4). Model-comparison paper (stepwise MR vs NN vs ANFIS, 10-fold CV). The only printed hedonic coefficients are in Equation (2), p. 429: Saleprice = -1.720E7 + 1.4 Landvalue + 5491 Yearsold + 7491 Dcity - 6305 Dculd + 1613 Slope + 3 X - 23052 Dpark (signs verified on the rendered page). No standard errors, t-statistics or p-values are printed anywhere; adjusted R2 0.3694 (Table 2). Dependent variable: sale price in Australian dollars (level). No structural characteristics (Australian data lack them); area, Dschool, Height, Aspect and Y were dropped by stepwise selection. Distance units are not printed (metres implied by the 500 m accessibility discussion). Total N inferred from the sum of 'Sold' by suburb in Table 3 (4,210) and the error counts in Table 2 (1176 = 28%). X map coordinate not extracted. All coefficients medium confidence (equation only, no inference statistics) - not usable in weighted synthesis."
 },
 "models": [
  {
   "model_id": "EQ2-c1",
   "table": "Equation 2",
   "column": "1",
   "page": 11,
   "dep_var": "Sale price (AUD, level)",
   "dep_transform": "level",
   "estimator": "OLS",
   "n_obs": 4210,
   "r2": 0.3694,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Stepwise multiple regression, all Bathurst sales; adjusted R2 0.3694 from Table 2; N inferred"
  }
 ],
 "coefficients": [
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Landvalue",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "currency (estimated land value, AUD)",
   "beta": 1.4,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Estimated land value of the parcel (AUD); coefficient read from Equation (2), no SE/t/p printed"
  },
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Yearsold",
   "taxonomy_id": "transaction_timing",
   "x_transform": "level",
   "x_unit": "years (calendar year of sale)",
   "beta": 5491,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Year of sale as a linear trend; coefficient read from Equation (2), no SE/t/p printed"
  },
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Dcity",
   "taxonomy_id": "cbd_distance",
   "x_transform": "level",
   "x_unit": "m (distance to CBD; unit not printed, metres implied)",
   "beta": 7491,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Positive sign as printed; coefficient read from Equation (2), no SE/t/p printed"
  },
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Dculd",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "m (distance to cul-de-sac; unit not printed)",
   "beta": -6305,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Distance to the nearest cul-de-sac; coefficient read from Equation (2), no SE/t/p printed"
  },
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Slope",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "degrees (slope of parcel centroid)",
   "beta": 1613,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Topographic slope (Slope_deg); coefficient read from Equation (2), no SE/t/p printed"
  },
  {
   "model_id": "EQ2-c1",
   "var_name_printed": "Dpark",
   "taxonomy_id": "green_space",
   "x_transform": "level",
   "x_unit": "m (distance to closest park; unit not printed)",
   "beta": -23052,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 11,
   "confidence": "medium",
   "notes": "Negative sign as printed; coefficient read from Equation (2), no SE/t/p printed"
  }
 ]
}