{
 "record_id": "98438191d74bdd40ba8f1ee8325b8fb8b7420348",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Influence of Objective Factors on House Prices",
  "year": 2023,
  "doi": "10.54254/2754-1169/4/20221059",
  "country": "unknown",
  "region_city": "unknown (variables Carpet_area/Builtup_area/City_type suggest an Indian listing dataset)",
  "sample_start": 0,
  "sample_end": 0,
  "property_type": "unknown",
  "price_type": "listing",
  "data_source": "Unspecified dataset of 932 houses (SPSS); source, country, period and units not stated",
  "document_type": "conference",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 932,
  "ai_methods": [],
  "notes": "Very low-quality conference paper (ICEMGD 2022): stepwise OLS of house price (level) on carpet area, built-up area and hospital distance; only the final fitted equation (1) is printed, no coefficient table with SE/t; units, currency, country, period and price type are NOT stated (price_type 'listing' is an assumption). Taxi_dist, Market_dist, Parking_type, City_type, Rainfall dropped by stepwise selection. Flag for human review; exclude from primary synthesis (no variance information, unknown units)."
 },
 "models": [
  {
   "model_id": "EQ1-m3",
   "table": "eq. (1) / Table 5 model 3",
   "column": "3",
   "page": 5,
   "dep_var": "Price_house (house price, currency not stated; mean 6,084,695)",
   "dep_transform": "level",
   "estimator": "OLS",
   "n_obs": 898,
   "r2": 0.889,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Stepwise linear regression, final model with 3 retained variables (Carpet_area, Builtup_area, Hospital_dist); N from ANOVA df (total 897 => 898); adjusted R2 0.888"
  }
 ],
 "coefficients": [
  {
   "model_id": "EQ1-m3",
   "var_name_printed": "Carpet_area (X_C)",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "not stated (carpet area, mean 1,512; likely sqft)",
   "beta": 5764.491,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 5,
   "confidence": "medium",
   "notes": "Coefficient read from printed equation (1); no SE/t table printed, text states t-test p = 0.000 for retained variables"
  },
  {
   "model_id": "EQ1-m3",
   "var_name_printed": "Builtup_area (X_B)",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "not stated (built-up/construction area, mean 1,795; likely sqft)",
   "beta": -7804.659,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 5,
   "confidence": "medium",
   "notes": "Built-up (construction) area, entered alongside carpet area; negative sign; coefficient from equation (1), no SE"
  },
  {
   "model_id": "EQ1-m3",
   "var_name_printed": "Hospital_dist (X_H)",
   "taxonomy_id": "hospital_distance",
   "x_transform": "level",
   "x_unit": "not stated (mean 13,072; likely metres)",
   "beta": 87.981,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 5,
   "confidence": "medium",
   "notes": "Distance to hospital; positive sign; coefficient from equation (1), no SE"
  }
 ]
}