{
 "record_id": "74099967a079fff42f0df3135c0f69cc4e059615",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "A Quantitative Examination of Housing Price Determinants in Yogyakarta",
  "year": 2025,
  "doi": "10.23917/determinasi.v3i4.502",
  "country": "Indonesia",
  "region_city": "Yogyakarta",
  "sample_start": null,
  "sample_end": null,
  "property_type": "single_family",
  "price_type": "listing",
  "data_source": "Kaggle secondary dataset 'Yogyakarta Housing Prices (Indonesia)' (2,020 listings; 1,713 complete cases)",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none",
  "time_fe": false,
  "location_fe": false,
  "se_type": "OLS",
  "n_obs_total": 1713,
  "ai_methods": [],
  "notes": "Student paper using a Kaggle listing dataset (year of listings not stated; property type not stated, presumably houses given land area). Linear model in levels (IDR). Table 4 prints unstandardized coefficient, SE, standardized beta, t and p; unstandardized values extracted. Data quality concerns: house area (X4) has mean 1.19e6 m2 and max 2.4e9 m2, bedrooms/bathrooms max 49, VIF > 10 for X1/X2; results should be treated with caution. No stars; p-values printed."
 },
 "models": [
  {
   "model_id": "T4-M1",
   "table": "4",
   "column": "M1",
   "page": 7,
   "dep_var": "housing price (IDR)",
   "dep_transform": "level",
   "estimator": "OLS",
   "n_obs": 1713,
   "r2": 0.428,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Complete cases from Kaggle dataset; adj R2 0.427"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-M1",
   "var_name_printed": "X1 (number of bedrooms)",
   "taxonomy_id": "bedrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 88540000.0,
   "se": 39390000.0,
   "t": 2.248,
   "p": 0.025,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "VIF 10.08"
  },
  {
   "model_id": "T4-M1",
   "var_name_printed": "X2 (number of bathrooms)",
   "taxonomy_id": "bathrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 164200000.0,
   "se": 39390000.0,
   "t": 4.169,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "p printed as < .001; VIF 10.26"
  },
  {
   "model_id": "T4-M1",
   "var_name_printed": "X3 (land area)",
   "taxonomy_id": "lot_size",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 3729000.0,
   "se": 243986.024,
   "t": 15.282,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "p printed as < .001"
  },
  {
   "model_id": "T4-M1",
   "var_name_printed": "X4 (house area)",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 0.301,
   "se": 0.722,
   "t": 0.417,
   "p": 0.677,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "medium",
   "notes": "Variable badly scaled in source data (mean 1.19e6 m2, max 2.4e9 m2); coefficient printed as 0.301 (SE 0.722)"
  },
  {
   "model_id": "T4-M1",
   "var_name_printed": "X5 (vehicle slots)",
   "taxonomy_id": "parking",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 160600000.0,
   "se": 44080000.0,
   "t": 3.643,
   "p": 0.001,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 7,
   "confidence": "high",
   "notes": "p printed as < .001"
  }
 ]
}