1{2 "record_id": "281b355bd08bd1b8b228829d9c97b819d0d2a4d1",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Impact of Air Pollution on Property Values: A Hedonic Price Study",7 "year": 2013,8 "doi": "10.23917/jep.v14i1.150",9 "country": "Indonesia",10 "region_city": "Yogyakarta Special Region (city of Yogyakarta and Sleman regency)",11 "sample_start": null,12 "sample_end": null,13 "property_type": "single_family",14 "price_type": "transaction",15 "data_source": "Structured questionnaire survey of 250 households (self-reported house sales price); BLH DIY air quality monitoring 2010",16 "document_type": "journal",17 "estimators": [18 "OLS"19 ],20 "spatial_method": "none",21 "time_fe": false,22 "location_fe": false,23 "se_type": "unknown",24 "n_obs_total": 250,25 "ai_methods": [],26 "notes": "Survey year not stated (CO data refer to 2010). Reported R2 is adjusted R2. Table 6 (inverse demand function, second stage) not extracted. Dependent variable natural log of house price in Rupiah."27 },28 "models": [29 {30 "model_id": "T4-c1",31 "table": "4",32 "column": "Full Model",33 "page": 9,34 "dep_var": "ln PPRICE (house sales price, Rupiah)",35 "dep_transform": "log",36 "estimator": "OLS",37 "n_obs": 250,38 "r2": 0.766,39 "se_or_t_in_parentheses": "t",40 "sample_subset": "All variables"41 },42 {43 "model_id": "T4-c2",44 "table": "4",45 "column": "Fit Model",46 "page": 9,47 "dep_var": "ln PPRICE (house sales price, Rupiah)",48 "dep_transform": "log",49 "estimator": "OLS",50 "n_obs": 250,51 "r2": 0.763,52 "se_or_t_in_parentheses": "t",53 "sample_subset": "Insignificant variables dropped"54 }55 ],56 "coefficients": [57 {58 "model_id": "T4-c1",59 "var_name_printed": "LnLANDSIZE",60 "taxonomy_id": "lot_size",61 "x_transform": "log",62 "x_unit": "m2",63 "beta": 0.553,64 "se": null,65 "t": 7.84,66 "p": null,67 "p_stars": "***",68 "ci_lo": null,69 "ci_hi": null,70 "page": 9,71 "confidence": "medium",72 "notes": "Plot area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"73 },74 {75 "model_id": "T4-c2",76 "var_name_printed": "LnLANDSIZE",77 "taxonomy_id": "lot_size",78 "x_transform": "log",79 "x_unit": "m2",80 "beta": 0.528,81 "se": null,82 "t": 7.658,83 "p": null,84 "p_stars": "***",85 "ci_lo": null,86 "ci_hi": null,87 "page": 9,88 "confidence": "medium",89 "notes": "Plot area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"90 },91 {92 "model_id": "T4-c1",93 "var_name_printed": "LnBUILDSIZE",94 "taxonomy_id": "living_area",95 "x_transform": "log",96 "x_unit": "m2",97 "beta": 0.113,98 "se": null,99 "t": 1.38,100 "p": null,101 "p_stars": "",102 "ci_lo": null,103 "ci_hi": null,104 "page": 9,105 "confidence": "medium",106 "notes": "Building area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"107 },108 {109 "model_id": "T4-c2",110 "var_name_printed": "LnBUILDSIZE",111 "taxonomy_id": "living_area",112 "x_transform": "log",113 "x_unit": "m2",114 "beta": 0.164,115 "se": null,116 "t": 2.093,117 "p": null,118 "p_stars": "**",119 "ci_lo": null,120 "ci_hi": null,121 "page": 9,122 "confidence": "medium",123 "notes": "Building area; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"124 },125 {126 "model_id": "T4-c1",127 "var_name_printed": "LnNUMROOM",128 "taxonomy_id": "bedrooms",129 "x_transform": "log",130 "x_unit": "count",131 "beta": 0.094,132 "se": null,133 "t": 1.179,134 "p": null,135 "p_stars": "",136 "ci_lo": null,137 "ci_hi": null,138 "page": 9,139 "confidence": "medium",140 "notes": "Number of rooms (all rooms); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"141 },142 {143 "model_id": "T4-c1",144 "var_name_printed": "WSTRUCTDUM",145 "taxonomy_id": "roof_materials",146 "x_transform": "binary",147 "x_unit": "binary",148 "beta": -0.067,149 "se": null,150 "t": -1.088,151 "p": null,152 "p_stars": "",153 "ci_lo": null,154 "ci_hi": null,155 "page": 9,156 "confidence": "medium",157 "notes": "Wall structure dummy; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"158 },159 {160 "model_id": "T4-c1",161 "var_name_printed": "LnDISSCHOOL",162 "taxonomy_id": "school_distance",163 "x_transform": "log",164 "x_unit": "m",165 "beta": -0.071,166 "se": null,167 "t": -1.809,168 "p": null,169 "p_stars": "*",170 "ci_lo": null,171 "ci_hi": null,172 "page": 9,173 "confidence": "medium",174 "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"175 },176 {177 "model_id": "T4-c2",178 "var_name_printed": "LnDISSCHOOL",179 "taxonomy_id": "school_distance",180 "x_transform": "log",181 "x_unit": "m",182 "beta": -0.068,183 "se": null,184 "t": -1.91,185 "p": null,186 "p_stars": "**",187 "ci_lo": null,188 "ci_hi": null,189 "page": 9,190 "confidence": "medium",191 "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"192 },193 {194 "model_id": "T4-c1",195 "var_name_printed": "LnDISHPITAL",196 "taxonomy_id": "hospital_distance",197 "x_transform": "log",198 "x_unit": "m",199 "beta": -0.085,200 "se": null,201 "t": -1.98,202 "p": null,203 "p_stars": "**",204 "ci_lo": null,205 "ci_hi": null,206 "page": 9,207 "confidence": "medium",208 "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"209 },210 {211 "model_id": "T4-c2",212 "var_name_printed": "LnDISHPITAL",213 "taxonomy_id": "hospital_distance",214 "x_transform": "log",215 "x_unit": "m",216 "beta": -0.075,217 "se": null,218 "t": -1.885,219 "p": null,220 "p_stars": "*",221 "ci_lo": null,222 "ci_hi": null,223 "page": 9,224 "confidence": "medium",225 "notes": "Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"226 },227 {228 "model_id": "T4-c1",229 "var_name_printed": "LnDISSPMARKET",230 "taxonomy_id": "commercial_distance",231 "x_transform": "log",232 "x_unit": "m",233 "beta": 0.023,234 "se": null,235 "t": 0.56,236 "p": null,237 "p_stars": "",238 "ci_lo": null,239 "ci_hi": null,240 "page": 9,241 "confidence": "medium",242 "notes": "Distance from supermarket; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"243 },244 {245 "model_id": "T4-c1",246 "var_name_printed": "LnDISREST",247 "taxonomy_id": "neighbourhood_amenities",248 "x_transform": "log",249 "x_unit": "m",250 "beta": -0.023,251 "se": null,252 "t": -0.652,253 "p": null,254 "p_stars": "",255 "ci_lo": null,256 "ci_hi": null,257 "page": 9,258 "confidence": "medium",259 "notes": "Distance from restaurant; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"260 },261 {262 "model_id": "T4-c1",263 "var_name_printed": "LnDISCITY",264 "taxonomy_id": "cbd_distance",265 "x_transform": "log",266 "x_unit": "m",267 "beta": 0.054,268 "se": null,269 "t": 1.274,270 "p": null,271 "p_stars": "",272 "ci_lo": null,273 "ci_hi": null,274 "page": 9,275 "confidence": "medium",276 "notes": "Distance from city; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"277 },278 {279 "model_id": "T4-c2",280 "var_name_printed": "LnDISCITY",281 "taxonomy_id": "cbd_distance",282 "x_transform": "log",283 "x_unit": "m",284 "beta": 0.064,285 "se": null,286 "t": 1.538,287 "p": null,288 "p_stars": "",289 "ci_lo": null,290 "ci_hi": null,291 "page": 9,292 "confidence": "medium",293 "notes": "Distance from city; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"294 },295 {296 "model_id": "T4-c1",297 "var_name_printed": "LnDISMSTREET",298 "taxonomy_id": "highway_distance",299 "x_transform": "log",300 "x_unit": "m",301 "beta": 0.024,302 "se": null,303 "t": 1.03,304 "p": null,305 "p_stars": "",306 "ci_lo": null,307 "ci_hi": null,308 "page": 9,309 "confidence": "medium",310 "notes": "Distance from main street; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"311 },312 {313 "model_id": "T4-c1",314 "var_name_printed": "GARDENDUM",315 "taxonomy_id": "garden",316 "x_transform": "binary",317 "x_unit": "binary",318 "beta": 0.129,319 "se": null,320 "t": 1.673,321 "p": null,322 "p_stars": "*",323 "ci_lo": null,324 "ci_hi": null,325 "page": 9,326 "confidence": "medium",327 "notes": "Dummy for close to garden; Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"328 },329 {330 "model_id": "T4-c1",331 "var_name_printed": "LnCO",332 "taxonomy_id": "air_pollution",333 "x_transform": "log",334 "x_unit": "ug/m3",335 "beta": -1.305,336 "se": null,337 "t": -13.115,338 "p": null,339 "p_stars": "***",340 "ci_lo": null,341 "ci_hi": null,342 "page": 9,343 "confidence": "medium",344 "notes": "Carbon monoxide concentration (2010 ambient monitoring); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"345 },346 {347 "model_id": "T4-c2",348 "var_name_printed": "LnCO",349 "taxonomy_id": "air_pollution",350 "x_transform": "log",351 "x_unit": "ug/m3",352 "beta": -1.375,353 "se": null,354 "t": -15.066,355 "p": null,356 "p_stars": "***",357 "ci_lo": null,358 "ci_hi": null,359 "page": 9,360 "confidence": "medium",361 "notes": "Carbon monoxide concentration (2010 ambient monitoring); Parentheses contain t-statistics (not stated explicitly; inferred from magnitudes); star legend not printed, conventional ***1% **5% *10% assumed"362 }363 ]364}