{
 "record_id": "0a4917c7f444817b4974629ac2f7d58ef2f99321",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "The Hedonic Method in Evaluating Apartment Price: A Case of Ho Chi Minh City, Vietnam",
  "year": 2020,
  "doi": "10.13106/jafeb.2020.vol7.no6.517",
  "country": "Vietnam",
  "region_city": "Ho Chi Minh City (24 districts)",
  "sample_start": null,
  "sample_end": null,
  "property_type": "condo_apartment",
  "price_type": "transaction",
  "data_source": "Primary survey of buyers who completed apartment transactions plus transaction data from top developers; 339 valid questionnaires",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "",
  "time_fe": false,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 339,
  "ai_methods": [],
  "notes": "Table 4 reports unstandardized B and 'Significance' (p-value) only; no SE/t. Stars as printed (*** 1%, ** 5%, * 10% per text). Dependent variable: total apartment value in billion VND (level), so betas are billion VND per unit. Survey year not printed (paper received March 2020). Model 1 uses WCBR (toilets+bedrooms count) without SQUA; Model 2 uses SQUA (area) without WCBR because of collinearity (r=0.835). Several regressors are not property characteristics (reference price, trend, investor reputation, legal status) and are mapped to 'other'."
 },
 "models": [
  {
   "model_id": "T4-c1",
   "table": "4",
   "column": "Model 1",
   "page": 6,
   "dep_var": "Total apartment value (billion VND)",
   "dep_transform": "level",
   "estimator": "OLS",
   "n_obs": 339,
   "r2": 0.829,
   "se_or_t_in_parentheses": "p",
   "sample_subset": "Model 1: with WCBR, without SQUA"
  },
  {
   "model_id": "T4-c2",
   "table": "4",
   "column": "Model 2",
   "page": 6,
   "dep_var": "Total apartment value (billion VND)",
   "dep_transform": "level",
   "estimator": "OLS",
   "n_obs": 339,
   "r2": 0.863,
   "se_or_t_in_parentheses": "p",
   "sample_subset": "Model 2: with SQUA, without WCBR"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-c1",
   "var_name_printed": "DIS",
   "taxonomy_id": "cbd_distance",
   "x_transform": "level",
   "x_unit": "km",
   "beta": -0.059,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Distance from project to city centre (HCMC post office), km"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "DIS",
   "taxonomy_id": "cbd_distance",
   "x_transform": "level",
   "x_unit": "km",
   "beta": -0.065,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Distance from project to city centre (HCMC post office), km"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "FLO",
   "taxonomy_id": "floor_level",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.047,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Floor of the apartment"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "FLO",
   "taxonomy_id": "floor_level",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.031,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Floor of the apartment"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "TIME-USED",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": 0.012,
   "se": null,
   "t": null,
   "p": 0.311,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Years the apartment has been used"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "TIME-USED",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": 0.015,
   "se": null,
   "t": null,
   "p": 0.162,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Years the apartment has been used"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "RE-PRICE",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "currency",
   "beta": 0.565,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Reference price (billion VND); market variable"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "RE-PRICE",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "currency",
   "beta": 0.464,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Reference price (billion VND); market variable"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "FUR",
   "taxonomy_id": "luxury_finishes",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.324,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Interior: 1 high-end, 0 budget"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "FUR",
   "taxonomy_id": "luxury_finishes",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.324,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Interior: 1 high-end, 0 budget"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "VIEW",
   "taxonomy_id": "view",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.056,
   "se": null,
   "t": null,
   "p": 0.397,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "1 = river/lake/park view"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "VIEW",
   "taxonomy_id": "view",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.045,
   "se": null,
   "t": null,
   "p": 0.443,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "1 = river/lake/park view"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "IN-ENVI",
   "taxonomy_id": "recreation_private",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.011,
   "se": null,
   "t": null,
   "p": 0.875,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "1 = project has gym, swimming pool, supermarket"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "IN-ENVI",
   "taxonomy_id": "recreation_private",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.02,
   "se": null,
   "t": null,
   "p": 0.759,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "1 = project has gym, swimming pool, supermarket"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "INVEST",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.009,
   "se": null,
   "t": null,
   "p": 0.899,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Investor reputation: 1 = at least 2 projects"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "INVEST",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.027,
   "se": null,
   "t": null,
   "p": 0.666,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Investor reputation: 1 = at least 2 projects"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "LEG",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.009,
   "se": null,
   "t": null,
   "p": 0.897,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Legal status: 1 = has pink book"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "LEG",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.071,
   "se": null,
   "t": null,
   "p": 0.281,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Legal status: 1 = has pink book"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "ULSTRUCTURE",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.145,
   "se": null,
   "t": null,
   "p": 0.044,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Planned supermarket/school/administrative works nearby next year"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "ULSTRUCTURE",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.167,
   "se": null,
   "t": null,
   "p": 0.009,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Planned supermarket/school/administrative works nearby next year"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "TREND",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.083,
   "se": null,
   "t": null,
   "p": 0.133,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Expected price trend: 1 = uptrend; market expectation variable"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "TREND",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.091,
   "se": null,
   "t": null,
   "p": 0.065,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Expected price trend: 1 = uptrend; market expectation variable"
  },
  {
   "model_id": "T4-c1",
   "var_name_printed": "WCBR",
   "taxonomy_id": "bedrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.379,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Combined number of toilets and bedrooms (Model 1 only)"
  },
  {
   "model_id": "T4-c2",
   "var_name_printed": "SQUA",
   "taxonomy_id": "living_area",
   "x_transform": "level",
   "x_unit": "m2",
   "beta": 0.016,
   "se": null,
   "t": null,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "Apartment area m2 (Model 2 only)"
  }
 ]
}