{
 "record_id": "cfc27a33426e6615c17a451873b0b54c65612252",
 "eligible": false,
 "exclusion_reason": "Unit of analysis is the housing estate (project): the dependent variable is the log of the average per-square-metre price of each housing estate (HEPrice, 47,316 estates in 10 Chinese cities), not individual dwelling transactions; only building year and proximity variables are included as estate-level characteristics (no structural attributes of dwellings). Aggregate (project-mean) hedonic, excluded from coefficient synthesis per protocol.",
 "study": {
  "title": "Multilevel effects of urban form and urban functional zones on housing prices: evidence from open-source big data",
  "year": 2024,
  "doi": "10.1007/s10901-023-10109-y",
  "country": "China",
  "region_city": "10 extra-large cities (Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hangzhou, Wuhan, Nanjing, Changsha, Xi'an)",
  "sample_start": 2021,
  "sample_end": 2021,
  "property_type": "condo_apartment",
  "price_type": "listing",
  "data_source": "Open-source big data: historical housing transaction/listing data at estate level (average price per m2, Oct 2021) and Gaode Map POIs",
  "document_type": "journal",
  "estimators": [
   "other",
   "OLS"
  ],
  "spatial_method": "hierarchical linear model (two-level: estate within city)",
  "time_fe": false,
  "location_fe": true,
  "se_type": "robust",
  "n_obs_total": 47316,
  "ai_methods": [
   "NLP (natural language processing of POI data for urban functional zones)"
  ],
  "notes": "Table 5 (p. 16) reports HLM Models 1-3 and an OLS model with robust SEs; level-1 regressors: building year (year of construction, not age), proximity (km) to metro station, bus station, working zone, shopping center, commercial business zone, park/green space, 3A hospital, primary/middle school; level-2 city-level urban form and socio-economic indices. Not extracted because the outcome is an estate-level average price (project mean). Sample period inferred from the exchange-rate date (22 Oct 2021); exact transaction window not stated in the dump."
 },
 "models": [],
 "coefficients": []
}