1{2 "record_id": "c7b242d28013321bceaeef0f994fd2d0dab032c0",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Implicit Prices in Urban Real Estate Valuation",7 "year": 2013,8 "doi": "10.4067/s0718-915x2013000200009",9 "country": "Spain",10 "region_city": "Córdoba",11 "sample_start": null,12 "sample_end": null,13 "property_type": "condo_apartment",14 "price_type": "transaction",15 "data_source": "Real estate brokerage companies operating in Córdoba (random sample of 2888 transactions of flats and apartments over a one-year period; year not stated)",16 "document_type": "journal",17 "estimators": ["OLS"],18 "spatial_method": "none",19 "time_fe": false,20 "location_fe": false,21 "se_type": "OLS",22 "n_obs_total": 2888,23 "ai_methods": ["neural_network (MLP 6:6-6-1:1, predictive comparison only, no marginal effects tabulated)"],24 "notes": "Linear hedonic model in levels (sales price in euros) with one interaction term; composite indices (location, annexes) scaled to [0,1]. Table 3 reports coefficient, standard error, t-Student and Prob. R2 = 0.7738. NN model only compared on fit (Table 4)."25 },26 "models": [27 {28 "model_id": "T3-c1",29 "table": "3",30 "column": "1",31 "page": 7,32 "dep_var": "Sales price (euros)",33 "dep_transform": "level",34 "estimator": "OLS",35 "n_obs": 2888,36 "r2": 0.7738,37 "se_or_t_in_parentheses": "se",38 "sample_subset": "full sample; n=2888 stated in text (p. 6), not in table"39 }40 ],41 "coefficients": [42 {"model_id": "T3-c1", "var_name_printed": "Surface", "taxonomy_id": "living_area", "x_transform": "level", "x_unit": "m2", "beta": 1109.951, "se": 83.62050, "t": 13.27368, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "size of the flat in square metres including common areas"},43 {"model_id": "T3-c1", "var_name_printed": "Age", "taxonomy_id": "age", "x_transform": "level", "x_unit": "years", "beta": -1067.449, "se": 173.5725, "t": -6.149872, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "age of the building"},44 {"model_id": "T3-c1", "var_name_printed": "Location", "taxonomy_id": null, "x_transform": "other", "x_unit": "index", "beta": 64297.29, "se": 5494.403, "t": 11.70232, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "composite location index in [0,1] (position in city, area characteristics, income of the zone); no single taxonomy leaf (mix of cbd_distance/income)"},45 {"model_id": "T3-c1", "var_name_printed": "Annexes", "taxonomy_id": "garage", "x_transform": "other", "x_unit": "index", "beta": 18458.66, "se": 4572.246, "t": 4.037111, "p": 0.0001, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "medium", "notes": "annex index in [0,1] combining garage and store room; mapped to garage (composite)"},46 {"model_id": "T3-c1", "var_name_printed": "Expenses", "taxonomy_id": null, "x_transform": "level", "x_unit": "currency", "beta": 1296.708, "se": 105.9213, "t": 12.24218, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "high", "notes": "community expenses in euros; not a taxonomy characteristic"},47 {"model_id": "T3-c1", "var_name_printed": "Pav xCarp", "taxonomy_id": "condition", "x_transform": "other", "x_unit": "index", "beta": 5117.270, "se": 504.0529, "t": 10.15225, "p": 0.0000, "p_stars": "", "ci_lo": null, "ci_hi": null, "page": 7, "confidence": "medium", "notes": "interaction between pavement (floor) condition and external carpentry quality variables"}48 ]49}50