1{2 "record_id": "3244bfbe46126d82d9734bb6ef3476cad91ccc3f",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Impacts of Ground Water Contamination on Property Values: Agricultural Run-off and Private Wells",7 "year": 2016,8 "doi": "10.1017/age.2016.16",9 "country": "United States",10 "region_city": "Lake County, Florida",11 "sample_start": 1990,12 "sample_end": 2013,13 "property_type": "single_family",14 "price_type": "transaction",15 "data_source": "Residential transactions (Lake County) linked to Florida Department of Health private potable-well contamination tests; GIS amenity data",16 "document_type": "journal",17 "estimators": [18 "OLS",19 "FE_panel",20 "spatial_error"21 ],22 "spatial_method": "spatial error model (inverse-distance SWM, 3,200 m radius, 12-month time constraint) and census block-group fixed effects",23 "time_fe": true,24 "location_fe": true,25 "se_type": "robust",26 "n_obs_total": 1730,27 "ai_methods": [],28 "notes": "Agricultural and Resource Economics Review 45(2), 293-318. Dependent variable: natural log of real transaction price (2013 USD). Sample: 1,730 sales of homes whose private well was tested at some point before sale (property type assumed single-family; 'homes' with lots in acres and pools). All models include year and quarter dummies and the Table 3 controls (age, quality, bathrooms, log sqft, log lot size, pool, A/C, gas stations, distances, lakefront, floodplain, inverse distance to citrus/row crops/golf, public water service area), but Table 4 prints ONLY the contamination variables of interest; the structural/location coefficients are not reported. Robust SEs in parentheses (clustered at block group in FE models). Stars: *** p<0.01, ** p<0.05, * p<0.1. Minus signs are encoded as a special glyph in the PDF text layer and were restored from the PDF. Rows '%DeltapDL' are the authors' derived joint percentage effects (eq. 5) of testing + contamination above detectable limit, recorded as x_transform 'other' with delta-method SEs."29 },30 "models": [31 {32 "model_id": "T4-A",33 "table": "4",34 "column": "A",35 "page": 15,36 "dep_var": "ln real transaction price (2013 USD)",37 "dep_transform": "log",38 "estimator": "OLS",39 "n_obs": 1730,40 "r2": 0.7981,41 "se_or_t_in_parentheses": "se",42 "sample_subset": "Base model, OLS; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"43 },44 {45 "model_id": "T4-B",46 "table": "4",47 "column": "B",48 "page": 15,49 "dep_var": "ln real transaction price (2013 USD)",50 "dep_transform": "log",51 "estimator": "FE_panel",52 "n_obs": 1730,53 "r2": 0.7701,54 "se_or_t_in_parentheses": "se",55 "sample_subset": "Base model, census block-group fixed effects (65 FE); wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"56 },57 {58 "model_id": "T4-C",59 "table": "4",60 "column": "C",61 "page": 15,62 "dep_var": "ln real transaction price (2013 USD)",63 "dep_transform": "log",64 "estimator": "spatial_error",65 "n_obs": 1730,66 "r2": 0.8001,67 "se_or_t_in_parentheses": "se",68 "sample_subset": "Base model, spatial error model; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"69 },70 {71 "model_id": "T4-D",72 "table": "4",73 "column": "D",74 "page": 15,75 "dep_var": "ln real transaction price (2013 USD)",76 "dep_transform": "log",77 "estimator": "spatial_error",78 "n_obs": 1730,79 "r2": 0.8224,80 "se_or_t_in_parentheses": "se",81 "sample_subset": "Base model, spatial error model + block-group FE; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"82 },83 {84 "model_id": "T4-A1",85 "table": "4",86 "column": "A1",87 "page": 15,88 "dep_var": "ln real transaction price (2013 USD)",89 "dep_transform": "log",90 "estimator": "OLS",91 "n_obs": 1730,92 "r2": 0.7981,93 "se_or_t_in_parentheses": "se",94 "sample_subset": "Base model plus Tested x Above MCL interaction, OLS; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"95 },96 {97 "model_id": "T4-B1",98 "table": "4",99 "column": "B1",100 "page": 15,101 "dep_var": "ln real transaction price (2013 USD)",102 "dep_transform": "log",103 "estimator": "FE_panel",104 "n_obs": 1730,105 "r2": 0.7702,106 "se_or_t_in_parentheses": "se",107 "sample_subset": "Plus Tested x Above MCL, block-group FE; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"108 },109 {110 "model_id": "T4-C1",111 "table": "4",112 "column": "C1",113 "page": 15,114 "dep_var": "ln real transaction price (2013 USD)",115 "dep_transform": "log",116 "estimator": "spatial_error",117 "n_obs": 1730,118 "r2": 0.8001,119 "se_or_t_in_parentheses": "se",120 "sample_subset": "Plus Tested x Above MCL, spatial error model; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"121 },122 {123 "model_id": "T4-D1",124 "table": "4",125 "column": "D1",126 "page": 15,127 "dep_var": "ln real transaction price (2013 USD)",128 "dep_transform": "log",129 "estimator": "spatial_error",130 "n_obs": 1730,131 "r2": 0.8224,132 "se_or_t_in_parentheses": "se",133 "sample_subset": "Plus Tested x Above MCL, SEM + block-group FE; wells tested 0-3 years prior to sale; year and quarter dummies; full Table 3 controls included but not printed"134 }135 ],136 "coefficients": [137 {138 "model_id": "T4-A",139 "var_name_printed": "Tested",140 "taxonomy_id": "water_quality",141 "x_transform": "binary",142 "x_unit": "binary",143 "beta": -0.0239,144 "se": 0.0189,145 "t": null,146 "p": null,147 "p_stars": "",148 "ci_lo": null,149 "ci_hi": null,150 "page": 15,151 "confidence": "high",152 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"153 },154 {155 "model_id": "T4-B",156 "var_name_printed": "Tested",157 "taxonomy_id": "water_quality",158 "x_transform": "binary",159 "x_unit": "binary",160 "beta": 0.0021,161 "se": 0.0188,162 "t": null,163 "p": null,164 "p_stars": "",165 "ci_lo": null,166 "ci_hi": null,167 "page": 15,168 "confidence": "high",169 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"170 },171 {172 "model_id": "T4-C",173 "var_name_printed": "Tested",174 "taxonomy_id": "water_quality",175 "x_transform": "binary",176 "x_unit": "binary",177 "beta": -0.022,178 "se": 0.0172,179 "t": null,180 "p": null,181 "p_stars": "",182 "ci_lo": null,183 "ci_hi": null,184 "page": 15,185 "confidence": "high",186 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"187 },188 {189 "model_id": "T4-D",190 "var_name_printed": "Tested",191 "taxonomy_id": "water_quality",192 "x_transform": "binary",193 "x_unit": "binary",194 "beta": 0.0022,195 "se": 0.017,196 "t": null,197 "p": null,198 "p_stars": "",199 "ci_lo": null,200 "ci_hi": null,201 "page": 15,202 "confidence": "high",203 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"204 },205 {206 "model_id": "T4-A1",207 "var_name_printed": "Tested",208 "taxonomy_id": "water_quality",209 "x_transform": "binary",210 "x_unit": "binary",211 "beta": -0.0239,212 "se": 0.0189,213 "t": null,214 "p": null,215 "p_stars": "",216 "ci_lo": null,217 "ci_hi": null,218 "page": 15,219 "confidence": "high",220 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"221 },222 {223 "model_id": "T4-B1",224 "var_name_printed": "Tested",225 "taxonomy_id": "water_quality",226 "x_transform": "binary",227 "x_unit": "binary",228 "beta": 0.002,229 "se": 0.0189,230 "t": null,231 "p": null,232 "p_stars": "",233 "ci_lo": null,234 "ci_hi": null,235 "page": 15,236 "confidence": "high",237 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"238 },239 {240 "model_id": "T4-C1",241 "var_name_printed": "Tested",242 "taxonomy_id": "water_quality",243 "x_transform": "binary",244 "x_unit": "binary",245 "beta": -0.022,246 "se": 0.0172,247 "t": null,248 "p": null,249 "p_stars": "",250 "ci_lo": null,251 "ci_hi": null,252 "page": 15,253 "confidence": "high",254 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"255 },256 {257 "model_id": "T4-D1",258 "var_name_printed": "Tested",259 "taxonomy_id": "water_quality",260 "x_transform": "binary",261 "x_unit": "binary",262 "beta": 0.002,263 "se": 0.017,264 "t": null,265 "p": null,266 "p_stars": "",267 "ci_lo": null,268 "ci_hi": null,269 "page": 15,270 "confidence": "high",271 "notes": "Private well tested for contamination within 3 years prior to sale (any result)"272 },273 {274 "model_id": "T4-A",275 "var_name_printed": "Tested x Above DL",276 "taxonomy_id": "water_quality",277 "x_transform": "other",278 "x_unit": "binary",279 "beta": -0.0146,280 "se": 0.0181,281 "t": null,282 "p": null,283 "p_stars": "",284 "ci_lo": null,285 "ci_hi": null,286 "page": 15,287 "confidence": "high",288 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"289 },290 {291 "model_id": "T4-B",292 "var_name_printed": "Tested x Above DL",293 "taxonomy_id": "water_quality",294 "x_transform": "other",295 "x_unit": "binary",296 "beta": -0.0276,297 "se": 0.0173,298 "t": null,299 "p": null,300 "p_stars": "",301 "ci_lo": null,302 "ci_hi": null,303 "page": 15,304 "confidence": "high",305 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"306 },307 {308 "model_id": "T4-C",309 "var_name_printed": "Tested x Above DL",310 "taxonomy_id": "water_quality",311 "x_transform": "other",312 "x_unit": "binary",313 "beta": -0.015,314 "se": 0.0182,315 "t": null,316 "p": null,317 "p_stars": "",318 "ci_lo": null,319 "ci_hi": null,320 "page": 15,321 "confidence": "high",322 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"323 },324 {325 "model_id": "T4-D",326 "var_name_printed": "Tested x Above DL",327 "taxonomy_id": "water_quality",328 "x_transform": "other",329 "x_unit": "binary",330 "beta": -0.0277,331 "se": 0.0179,332 "t": null,333 "p": null,334 "p_stars": "",335 "ci_lo": null,336 "ci_hi": null,337 "page": 15,338 "confidence": "high",339 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"340 },341 {342 "model_id": "T4-A1",343 "var_name_printed": "Tested x Above DL",344 "taxonomy_id": "water_quality",345 "x_transform": "other",346 "x_unit": "binary",347 "beta": -0.0145,348 "se": 0.0181,349 "t": null,350 "p": null,351 "p_stars": "",352 "ci_lo": null,353 "ci_hi": null,354 "page": 15,355 "confidence": "high",356 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"357 },358 {359 "model_id": "T4-B1",360 "var_name_printed": "Tested x Above DL",361 "taxonomy_id": "water_quality",362 "x_transform": "other",363 "x_unit": "binary",364 "beta": -0.0288,365 "se": 0.0177,366 "t": null,367 "p": null,368 "p_stars": "",369 "ci_lo": null,370 "ci_hi": null,371 "page": 15,372 "confidence": "high",373 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"374 },375 {376 "model_id": "T4-C1",377 "var_name_printed": "Tested x Above DL",378 "taxonomy_id": "water_quality",379 "x_transform": "other",380 "x_unit": "binary",381 "beta": -0.015,382 "se": 0.0185,383 "t": null,384 "p": null,385 "p_stars": "",386 "ci_lo": null,387 "ci_hi": null,388 "page": 15,389 "confidence": "high",390 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"391 },392 {393 "model_id": "T4-D1",394 "var_name_printed": "Tested x Above DL",395 "taxonomy_id": "water_quality",396 "x_transform": "other",397 "x_unit": "binary",398 "beta": -0.0289,399 "se": 0.0181,400 "t": null,401 "p": null,402 "p_stars": "",403 "ci_lo": null,404 "ci_hi": null,405 "page": 15,406 "confidence": "high",407 "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"408 },409 {410 "model_id": "T4-A1",411 "var_name_printed": "Tested x Above MCL",412 "taxonomy_id": "water_quality",413 "x_transform": "other",414 "x_unit": "binary",415 "beta": -0.0007,416 "se": 0.04,417 "t": null,418 "p": null,419 "p_stars": "",420 "ci_lo": null,421 "ci_hi": null,422 "page": 15,423 "confidence": "high",424 "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"425 },426 {427 "model_id": "T4-B1",428 "var_name_printed": "Tested x Above MCL",429 "taxonomy_id": "water_quality",430 "x_transform": "other",431 "x_unit": "binary",432 "beta": 0.0153,433 "se": 0.0379,434 "t": null,435 "p": null,436 "p_stars": "",437 "ci_lo": null,438 "ci_hi": null,439 "page": 15,440 "confidence": "high",441 "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"442 },443 {444 "model_id": "T4-C1",445 "var_name_printed": "Tested x Above MCL",446 "taxonomy_id": "water_quality",447 "x_transform": "other",448 "x_unit": "binary",449 "beta": -0.0004,450 "se": 0.0367,451 "t": null,452 "p": null,453 "p_stars": "",454 "ci_lo": null,455 "ci_hi": null,456 "page": 15,457 "confidence": "high",458 "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"459 },460 {461 "model_id": "T4-D1",462 "var_name_printed": "Tested x Above MCL",463 "taxonomy_id": "water_quality",464 "x_transform": "other",465 "x_unit": "binary",466 "beta": 0.0155,467 "se": 0.0354,468 "t": null,469 "p": null,470 "p_stars": "",471 "ci_lo": null,472 "ci_hi": null,473 "page": 15,474 "confidence": "high",475 "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"476 },477 {478 "model_id": "T4-A",479 "var_name_printed": "%DeltapDL",480 "taxonomy_id": "water_quality",481 "x_transform": "other",482 "x_unit": "percent",483 "beta": -3.77,484 "se": 1.32,485 "t": null,486 "p": null,487 "p_stars": "***",488 "ci_lo": null,489 "ci_hi": null,490 "page": 15,491 "confidence": "high",492 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"493 },494 {495 "model_id": "T4-B",496 "var_name_printed": "%DeltapDL",497 "taxonomy_id": "water_quality",498 "x_transform": "other",499 "x_unit": "percent",500 "beta": -2.52,501 "se": 1.23,502 "t": null,503 "p": null,504 "p_stars": "**",505 "ci_lo": null,506 "ci_hi": null,507 "page": 15,508 "confidence": "high",509 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"510 },511 {512 "model_id": "T4-C",513 "var_name_printed": "%DeltapDL",514 "taxonomy_id": "water_quality",515 "x_transform": "other",516 "x_unit": "percent",517 "beta": -3.63,518 "se": 1.31,519 "t": null,520 "p": null,521 "p_stars": "***",522 "ci_lo": null,523 "ci_hi": null,524 "page": 15,525 "confidence": "high",526 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"527 },528 {529 "model_id": "T4-D",530 "var_name_printed": "%DeltapDL",531 "taxonomy_id": "water_quality",532 "x_transform": "other",533 "x_unit": "percent",534 "beta": -2.52,535 "se": 1.33,536 "t": null,537 "p": null,538 "p_stars": "*",539 "ci_lo": null,540 "ci_hi": null,541 "page": 15,542 "confidence": "high",543 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"544 },545 {546 "model_id": "T4-A1",547 "var_name_printed": "%DeltapDL",548 "taxonomy_id": "water_quality",549 "x_transform": "other",550 "x_unit": "percent",551 "beta": -3.77,552 "se": 1.35,553 "t": null,554 "p": null,555 "p_stars": "***",556 "ci_lo": null,557 "ci_hi": null,558 "page": 15,559 "confidence": "high",560 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"561 },562 {563 "model_id": "T4-B1",564 "var_name_printed": "%DeltapDL",565 "taxonomy_id": "water_quality",566 "x_transform": "other",567 "x_unit": "percent",568 "beta": -2.65,569 "se": 1.33,570 "t": null,571 "p": null,572 "p_stars": "**",573 "ci_lo": null,574 "ci_hi": null,575 "page": 15,576 "confidence": "high",577 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"578 },579 {580 "model_id": "T4-C1",581 "var_name_printed": "%DeltapDL",582 "taxonomy_id": "water_quality",583 "x_transform": "other",584 "x_unit": "percent",585 "beta": -3.63,586 "se": 1.35,587 "t": null,588 "p": null,589 "p_stars": "***",590 "ci_lo": null,591 "ci_hi": null,592 "page": 15,593 "confidence": "high",594 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"595 },596 {597 "model_id": "T4-D1",598 "var_name_printed": "%DeltapDL",599 "taxonomy_id": "water_quality",600 "x_transform": "other",601 "x_unit": "percent",602 "beta": -2.65,603 "se": 1.36,604 "t": null,605 "p": null,606 "p_stars": "**",607 "ci_lo": null,608 "ci_hi": null,609 "page": 15,610 "confidence": "high",611 "notes": "Derived joint percentage price change for a home tested within 3 years with contamination above detectable limit vs untested home (eq. 5: 100[exp(theta_test+theta_DL)-1]); delta-method SE"612 }613 ]614}