{
 "record_id": "a072fb43e67fcc553e457777f0c68324ace19eb7",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Factors influencing housing prices: A comparative study using multiple linear regression and random forest",
  "year": 2024,
  "doi": "10.54254/2753-8818/51/2024ch0174",
  "country": "unknown (stated as United States)",
  "region_city": "unknown",
  "sample_start": null,
  "sample_end": null,
  "property_type": "unknown",
  "price_type": "listing",
  "data_source": "Kaggle 'Housing Price Prediction' dataset (Harish Kumar, 2023), 545 observations, 13 variables",
  "document_type": "conference",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none",
  "time_fe": false,
  "location_fe": false,
  "se_type": "OLS",
  "n_obs_total": 544,
  "ai_methods": [
   "random_forest (prediction comparison only, RMSE/MAPE; no marginal effects)"
  ],
  "notes": "Theoretical and Natural Science, Proceedings of CONF-MPCS 2024 Workshop; student conference paper. The Kaggle dataset has no documented geography, currency or period (widely regarded as not US data); price type assumed listing. Recommend quality-tier exclusion / human review. Random forest reported only for predictive accuracy (RMSE 0.2095 vs 0.2032 for MLR; MAPE 0.0108 vs 0.0104)."
 },
 "models": [
  {
   "model_id": "T2-c1",
   "table": "2",
   "column": "1",
   "page": 4,
   "dep_var": "log housing price (currency not stated; dataset labelled 'US')",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 544,
   "r2": 0.697,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Full Kaggle 'Housing Price Prediction' dataset after removing 1 outlier (545 -> 544); adjusted R2 0.6896, RSE 0.2059; SE, t, p, VIF printed in columns"
  }
 ],
 "coefficients": [
  {
   "model_id": "T2-c1",
   "var_name_printed": "Area",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "sqft",
   "beta": 5e-05,
   "se": null,
   "t": 10.579,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Area of house in square feet; SE printed as '< 0.0001' (not recorded); Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Bedrooms",
   "taxonomy_id": "bedrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.029,
   "se": 0.014,
   "t": 2.046,
   "p": 0.041,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Bathrooms",
   "taxonomy_id": "bathrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.262,
   "se": 0.02,
   "t": 8.121,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Stories",
   "taxonomy_id": "storeys",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.09,
   "se": 0.012,
   "t": 7.264,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Main Road",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.118,
   "se": 0.027,
   "t": 4.312,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; House accessible from the main road (yes/no); Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Guestroom",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.071,
   "se": 0.025,
   "t": 2.812,
   "p": 0.005,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "House has a guest room; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Basement",
   "taxonomy_id": "basement",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.091,
   "se": 0.021,
   "t": 4.293,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Hot Water Heating",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.164,
   "se": 0.043,
   "t": 3.814,
   "p": 0.0002,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "Hot water heating system; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Airconditioning",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.173,
   "se": 0.021,
   "t": 8.298,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Parking",
   "taxonomy_id": "parking",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.044,
   "se": 0.011,
   "t": 3.872,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Number of parking spaces; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Prefer area",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.123,
   "se": 0.022,
   "t": 5.5,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; House located in a preferred area (yes/no); Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Semi-furnished",
   "taxonomy_id": "other",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.021,
   "se": 0.023,
   "t": 0.92,
   "p": 0.358,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "Furnishing status dummy, reference = fully furnished; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  },
  {
   "model_id": "T2-c1",
   "var_name_printed": "Unfurnished",
   "taxonomy_id": "other",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": -0.108,
   "se": 0.024,
   "t": -4.416,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 4,
   "confidence": "medium",
   "notes": "p printed as '< 0.0001'; Furnishing status dummy, reference = fully furnished; Kaggle toy dataset of unverifiable provenance (compiled 'from various websites', published 2023; country/period unknown, paper labels it US)"
  }
 ]
}