1{2 "record_id": "cfc27a33426e6615c17a451873b0b54c65612252",3 "eligible": false,4 "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.",5 "study": {6 "title": "Multilevel effects of urban form and urban functional zones on housing prices: evidence from open-source big data",7 "year": 2024,8 "doi": "10.1007/s10901-023-10109-y",9 "country": "China",10 "region_city": "10 extra-large cities (Shanghai, Beijing, Shenzhen, Guangzhou, Chengdu, Hangzhou, Wuhan, Nanjing, Changsha, Xi'an)",11 "sample_start": 2021,12 "sample_end": 2021,13 "property_type": "condo_apartment",14 "price_type": "listing",15 "data_source": "Open-source big data: historical housing transaction/listing data at estate level (average price per m2, Oct 2021) and Gaode Map POIs",16 "document_type": "journal",17 "estimators": [18 "other",19 "OLS"20 ],21 "spatial_method": "hierarchical linear model (two-level: estate within city)",22 "time_fe": false,23 "location_fe": true,24 "se_type": "robust",25 "n_obs_total": 47316,26 "ai_methods": [27 "NLP (natural language processing of POI data for urban functional zones)"28 ],29 "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."30 },31 "models": [],32 "coefficients": []33}