{
 "record_id": "a90efa2e2b4a4c7fde54cbffdb07fb2a1d2e8ed7",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Examining the vintage effect in hedonic pricing using spatially varying coefficients models: a case study of single-family houses in the Canton of Zurich",
  "year": 2022,
  "doi": "10.1186/s41937-021-00080-2",
  "country": "Switzerland",
  "region_city": "Canton of Zurich",
  "sample_start": 2018,
  "sample_end": 2019,
  "property_type": "single_family",
  "price_type": "transaction",
  "data_source": "FPRE (Fahrlaender Partner) arm's-length SFH transactions collected by Swiss banks/insurers, 2018Q3-2019Q4, 1578 obs, locations = centroids of 268 grid cells",
  "document_type": "journal",
  "estimators": [
   "other"
  ],
  "spatial_method": "GP-based spatially varying coefficients (SVC) model, maximum likelihood (R package varycoef); SVCs on intercept, Z.age, Z.age2",
  "time_fe": true,
  "location_fe": false,
  "se_type": "unknown",
  "n_obs_total": 1578,
  "ai_methods": [
   "Gaussian process SVC"
  ],
  "notes": "Table 3 p.8 reports mean (global) coefficients with SEs in parentheses (Hessian-based). Significance: '.' p<0.1, '*' p<0.05, '**' p<0.01, '***' p<0.001, 'n.s.' not significant. Dependent variable log adjusted transaction price (CHF, excluding parking). Year-quarter dummies (ref. 2018Q3) not extracted. Local SVC estimates only mapped (Fig. 5). Standardized age: Z.age = age/27."
 },
 "models": [
  {
   "model_id": "T3-SVC",
   "table": "3",
   "column": "Mean mu_j",
   "page": 8,
   "dep_var": "log transaction price (CHF)",
   "dep_transform": "log",
   "estimator": "other",
   "n_obs": 1578,
   "r2": null,
   "se_or_t_in_parentheses": "se",
   "sample_subset": "Full sample; error variance tau2 = 0.0242"
  }
 ],
 "coefficients": [
  {
   "model_id": "T3-SVC",
   "var_name_printed": "Z.age",
   "taxonomy_id": "age",
   "x_transform": "other",
   "x_unit": "years",
   "beta": -0.1495,
   "se": 0.0254,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Mean (global) effect of a spatially varying coefficient; Z.age = age / SD(age), SD of age = 27 years (Table 2), so beta per year = beta/27; quadratic in Z.age2"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "Z.age2",
   "taxonomy_id": "age",
   "x_transform": "squared",
   "x_unit": "years",
   "beta": 0.0114,
   "se": 0.0062,
   "t": null,
   "p": null,
   "p_stars": ".",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Square of standardized age (Z.age^2); mean effect of SVC; '.' = p<0.1"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "log (volume)",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "m3",
   "beta": 0.5132,
   "se": 0.0222,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Building VOLUME in m3 (SIA Zurich 2003), not floor area; elasticity"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "log (plotsize)",
   "taxonomy_id": "lot_size",
   "x_transform": "log",
   "x_unit": "m2",
   "beta": 0.172,
   "se": 0.0129,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Plot size m2, elasticity"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "renov",
   "taxonomy_id": "renovation",
   "x_transform": "level",
   "x_unit": "index",
   "beta": 0.0274,
   "se": 0.0059,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Need-for-renovation score 0-4 (difference between actual and theoretical building condition, higher = better)"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "standard",
   "taxonomy_id": "condition",
   "x_transform": "level",
   "x_unit": "index",
   "beta": 0.0911,
   "se": 0.0082,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Building standard/quality rating 2-5 (higher = better)"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "micro",
   "taxonomy_id": "other",
   "x_transform": "level",
   "x_unit": "index",
   "beta": 0.0385,
   "se": 0.0075,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Micro-location quality rating 2-5 (higher = better)"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "SFHtype 2",
   "taxonomy_id": "dwelling_type",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": -0.0062,
   "se": 0.012,
   "t": null,
   "p": null,
   "p_stars": "n.s.",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Semi-detached vs detached (reference)"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "SFHtype3",
   "taxonomy_id": "dwelling_type",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": -0.0274,
   "se": 0.0165,
   "t": null,
   "p": null,
   "p_stars": ".",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Row house vs detached (reference); '.' = p<0.1"
  },
  {
   "model_id": "T3-SVC",
   "var_name_printed": "energy2",
   "taxonomy_id": "energy_efficiency",
   "x_transform": "dummy",
   "x_unit": "binary",
   "beta": 0.0119,
   "se": 0.0281,
   "t": null,
   "p": null,
   "p_stars": "n.s.",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "high",
   "notes": "Enhanced energy efficiency standard vs insulated shell (reference); only 40 obs"
  }
 ]
}