{
 "record_id": "1956ccee53765fb417ccdc3f95db189441def931",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Analyzing the Impact of Accessibility on Residential Property Price: A Case study of Hanoi's Central Districts",
  "year": 2025,
  "doi": "10.64711/dq21w997",
  "country": "Vietnam",
  "region_city": "Hanoi, 12 central districts",
  "sample_start": 2024,
  "sample_end": 2025,
  "property_type": "mixed",
  "price_type": "listing",
  "data_source": "batdongsan.com.vn verified listings by professional brokers, Nov 2024-Mar 2025 (1,545 properties; houses and apartments) + OpenStreetMap amenities via QuickOSM",
  "document_type": "journal",
  "estimators": [
   "OLS",
   "GWR"
  ],
  "spatial_method": "GWR (ArcGIS, AIC bandwidth)",
  "time_fe": false,
  "location_fe": false,
  "se_type": "robust",
  "n_obs_total": 1545,
  "ai_methods": [],
  "notes": "VNU Journal of Interdisciplinary Sciences and Arts 1(2), 81-107. Accessibility-only hedonic model: dependent variable is listed price per m2 (million VND/m2) in levels; regressors are seven straight-line distances in metres. Coefficients are monetary (million VND per m2 per metre). Tables 2-3 are embedded as images in the PDF (read visually)."
 },
 "models": [
  {
   "model_id": "T2-OLS",
   "table": "2",
   "column": "Coefficient",
   "page": 15,
   "dep_var": "Property price per m2 (PRICE, million VND/m2)",
   "dep_transform": "per_m2",
   "estimator": "OLS",
   "n_obs": 1545,
   "r2": null,
   "se_or_t_in_parentheses": "se",
   "sample_subset": "1,545 verified listings, 12 central districts of Hanoi, Nov 2024-Mar 2025",
   "notes": "Dependent variable in levels (price per m2, million VND, mean 256.89). Adjusted R2 = 0.163853 (R2 not printed). Koenker BP = 31.6 (heteroskedastic) so robust p-values reported. Only 7 distance variables (no structural characteristics beyond the per-m2 normalisation). Intercept 441.542."
  },
  {
   "model_id": "T3-GWR-mean",
   "table": "3",
   "column": "Mean",
   "page": 16,
   "dep_var": "Property price per m2 (PRICE, million VND/m2)",
   "dep_transform": "per_m2",
   "estimator": "GWR",
   "n_obs": 1545,
   "r2": null,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "same sample",
   "notes": "GWR (ArcGIS default bandwidth selection, AIC). Table 3 reports Min, Q1, Mean, Q3, Max of local coefficients; mean extracted. Adjusted R2 = 0.192015, RSS 52241222.924, AICc 20530.28."
  }
 ],
 "coefficients": [
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDHOS: Shortest distance to the nearest hospital",
   "taxonomy_id": "hospital_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.031,
   "se": 0.01,
   "t": -3.258,
   "p": 0.001,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest Euclidean distance to nearest hospital (m)"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDPRK: Shortest distance to the nearest park or green space",
   "taxonomy_id": "green_space",
   "x_transform": "level",
   "x_unit": "m",
   "beta": 0.036,
   "se": 0.012,
   "t": 3.086,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to nearest park or green space (m); printed robust p-value does not match the printed t-value (recorded as printed)"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDSCH: Shortest distance to the nearest school",
   "taxonomy_id": "school_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": 0.036,
   "se": 0.015,
   "t": 2.4,
   "p": 0.002,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to nearest school (primary/secondary/high) (m); printed robust p-value does not match the printed t-value (recorded as printed)"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDUNI: Shortest distance to the nearest university",
   "taxonomy_id": "university_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.014,
   "se": 0.005,
   "t": -3.034,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to nearest university (m)"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDSHP: Shortest distance to the nearest shopping center",
   "taxonomy_id": "commercial_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": 0.008,
   "se": 0.008,
   "t": 1.024,
   "p": 0.257,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to nearest shopping centre (m)"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDCENL: Shortest distance to the nearest local People's committee location",
   "taxonomy_id": null,
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.015,
   "se": 0.004,
   "t": -4.385,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to nearest district-level People's Committee building (local administrative sub-centre); no exact taxonomy leaf"
  },
  {
   "model_id": "T2-OLS",
   "var_name_printed": "SDCEN: Shortest distance to Hanoi People's committee location",
   "taxonomy_id": "cbd_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.02,
   "se": 0.002,
   "t": -10.977,
   "p": 0.0,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Table 2 (OLS, ArcGIS): Coefficient, Std. Error, t-Value, p-Value (robust probability). Stars: *** 1%, ** 5%. shortest distance to Hanoi People's Committee building (city centre) (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDHOS: Shortest distance to the nearest hospital",
   "taxonomy_id": "hospital_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.041,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.09, Q1 -0.061, Q3 -0.023, Max 0.006; no SE or significance printed. shortest Euclidean distance to nearest hospital (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDPRK: Shortest distance to the nearest park or green space",
   "taxonomy_id": "green_space",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.01,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.053, Q1 -0.03, Q3 0.008, Max 0.04; no SE or significance printed. shortest distance to nearest park or green space (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDSCH: Shortest distance to the nearest school",
   "taxonomy_id": "school_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": 0.013,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.082, Q1 -0.015, Q3 0.039, Max 0.088; no SE or significance printed. shortest distance to nearest school (primary/secondary/high) (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDUNI: Shortest distance to the nearest university",
   "taxonomy_id": "university_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.003,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.028, Q1 -0.009, Q3 0.003, Max 0.042; no SE or significance printed. shortest distance to nearest university (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDSHP: Shortest distance to the nearest shopping center",
   "taxonomy_id": "commercial_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": 0.019,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.012, Q1 0.004, Q3 0.027, Max 0.048; no SE or significance printed. shortest distance to nearest shopping centre (m)"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDCENL: Shortest distance to the nearest local People's committee location",
   "taxonomy_id": null,
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.01,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.029, Q1 -0.024, Q3 0.008, Max 0.012; no SE or significance printed. shortest distance to nearest district-level People's Committee building (local administrative sub-centre); no exact taxonomy leaf"
  },
  {
   "model_id": "T3-GWR-mean",
   "var_name_printed": "SDCEN: Shortest distance to Hanoi People's committee location",
   "taxonomy_id": "cbd_distance",
   "x_transform": "level",
   "x_unit": "m",
   "beta": -0.03,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 16,
   "confidence": "medium",
   "notes": "Mean of local GWR coefficients (Table 3); Min -0.047, Q1 -0.035, Q3 -0.025, Max -0.016; no SE or significance printed. shortest distance to Hanoi People's Committee building (city centre) (m)"
  }
 ]
}