{
 "record_id": "3244bfbe46126d82d9734bb6ef3476cad91ccc3f",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Impacts of Ground Water Contamination on Property Values: Agricultural Run-off and Private Wells",
  "year": 2016,
  "doi": "10.1017/age.2016.16",
  "country": "United States",
  "region_city": "Lake County, Florida",
  "sample_start": 1990,
  "sample_end": 2013,
  "property_type": "single_family",
  "price_type": "transaction",
  "data_source": "Residential transactions (Lake County) linked to Florida Department of Health private potable-well contamination tests; GIS amenity data",
  "document_type": "journal",
  "estimators": [
   "OLS",
   "FE_panel",
   "spatial_error"
  ],
  "spatial_method": "spatial error model (inverse-distance SWM, 3,200 m radius, 12-month time constraint) and census block-group fixed effects",
  "time_fe": true,
  "location_fe": true,
  "se_type": "robust",
  "n_obs_total": 1730,
  "ai_methods": [],
  "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."
 },
 "models": [
  {
   "model_id": "T4-A",
   "table": "4",
   "column": "A",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 1730,
   "r2": 0.7981,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-B",
   "table": "4",
   "column": "B",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "FE_panel",
   "n_obs": 1730,
   "r2": 0.7701,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-C",
   "table": "4",
   "column": "C",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 1730,
   "r2": 0.8001,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-D",
   "table": "4",
   "column": "D",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 1730,
   "r2": 0.8224,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-A1",
   "table": "4",
   "column": "A1",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 1730,
   "r2": 0.7981,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-B1",
   "table": "4",
   "column": "B1",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "FE_panel",
   "n_obs": 1730,
   "r2": 0.7702,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-C1",
   "table": "4",
   "column": "C1",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 1730,
   "r2": 0.8001,
   "se_or_t_in_parentheses": "se",
   "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"
  },
  {
   "model_id": "T4-D1",
   "table": "4",
   "column": "D1",
   "page": 15,
   "dep_var": "ln real transaction price (2013 USD)",
   "dep_transform": "log",
   "estimator": "spatial_error",
   "n_obs": 1730,
   "r2": 0.8224,
   "se_or_t_in_parentheses": "se",
   "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"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-A",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.0239,
   "se": 0.0189,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-B",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.0021,
   "se": 0.0188,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-C",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.022,
   "se": 0.0172,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-D",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.0022,
   "se": 0.017,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-A1",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.0239,
   "se": 0.0189,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-B1",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.002,
   "se": 0.0189,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-C1",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.022,
   "se": 0.0172,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-D1",
   "var_name_printed": "Tested",
   "taxonomy_id": "water_quality",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.002,
   "se": 0.017,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Private well tested for contamination within 3 years prior to sale (any result)"
  },
  {
   "model_id": "T4-A",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0146,
   "se": 0.0181,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-B",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0276,
   "se": 0.0173,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-C",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.015,
   "se": 0.0182,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-D",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0277,
   "se": 0.0179,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-A1",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0145,
   "se": 0.0181,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-B1",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0288,
   "se": 0.0177,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-C1",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.015,
   "se": 0.0185,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-D1",
   "var_name_printed": "Tested x Above DL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0289,
   "se": 0.0181,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested within 3 years x contaminant concentration above detectable limit (incremental effect of contamination)"
  },
  {
   "model_id": "T4-A1",
   "var_name_printed": "Tested x Above MCL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0007,
   "se": 0.04,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"
  },
  {
   "model_id": "T4-B1",
   "var_name_printed": "Tested x Above MCL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 0.0153,
   "se": 0.0379,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"
  },
  {
   "model_id": "T4-C1",
   "var_name_printed": "Tested x Above MCL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": -0.0004,
   "se": 0.0367,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"
  },
  {
   "model_id": "T4-D1",
   "var_name_printed": "Tested x Above MCL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "binary",
   "beta": 0.0155,
   "se": 0.0354,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "notes": "Interaction: tested x concentration above maximum contaminant level / health advisory level (additional increment)"
  },
  {
   "model_id": "T4-A",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -3.77,
   "se": 1.32,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-B",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -2.52,
   "se": 1.23,
   "t": null,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-C",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -3.63,
   "se": 1.31,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-D",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -2.52,
   "se": 1.33,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-A1",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -3.77,
   "se": 1.35,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-B1",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -2.65,
   "se": 1.33,
   "t": null,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-C1",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -3.63,
   "se": 1.35,
   "t": null,
   "p": null,
   "p_stars": "***",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  },
  {
   "model_id": "T4-D1",
   "var_name_printed": "%DeltapDL",
   "taxonomy_id": "water_quality",
   "x_transform": "other",
   "x_unit": "percent",
   "beta": -2.65,
   "se": 1.36,
   "t": null,
   "p": null,
   "p_stars": "**",
   "ci_lo": null,
   "ci_hi": null,
   "page": 15,
   "confidence": "high",
   "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"
  }
 ]
}