{
 "record_id": "14eecd7db66f7a02fa146490275ce97a19765a1a",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "The impact of a new light rail system on single-family property values in Charlotte, North Carolina",
  "year": 2012,
  "doi": "10.5198/jtlu.v5i2.261",
  "country": "United States",
  "region_city": "Charlotte (Mecklenburg County), North Carolina",
  "sample_start": 1997,
  "sample_end": 2008,
  "property_type": "single_family",
  "price_type": "transaction",
  "data_source": "Mecklenburg County POLARIS property records",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "block-group fixed effects; Moran's I on residuals reported",
  "time_fe": false,
  "location_fe": true,
  "se_type": "unknown",
  "n_obs_total": 6381,
  "ai_methods": [],
  "notes": "Separate OLS regressions for four periods (t1-t4) within 1 mile of future/actual light rail stations; sales prices deflated to 2005 USD. Table 3 prints coefficients with * for p<0.05 only; standard errors printed only for ln(network distance). n per period from Table 2 (1,592; 2,568; 1,308; 913). Block-group dummies absorb neighbourhood characteristics (no time FE within period)."
 },
 "models": [
  {
   "model_id": "T3-T1",
   "table": "3",
   "column": "T1",
   "page": 6,
   "dep_var": "ln(sales price, 2005 constant USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 1592,
   "r2": 0.779,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "1997-1998 (pre-planning)",
   "notes": "block-group (neighbourhood) fixed effects; only significance at p<0.05 flagged with *; SE printed only for ln(network distance)"
  },
  {
   "model_id": "T3-T2",
   "table": "3",
   "column": "T2",
   "page": 6,
   "dep_var": "ln(sales price, 2005 constant USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 2568,
   "r2": 0.786,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "1999-2005 (planning)",
   "notes": "block-group (neighbourhood) fixed effects; only significance at p<0.05 flagged with *; SE printed only for ln(network distance)"
  },
  {
   "model_id": "T3-T3",
   "table": "3",
   "column": "T3",
   "page": 6,
   "dep_var": "ln(sales price, 2005 constant USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 1308,
   "r2": 0.811,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "2005-2007 (construction)",
   "notes": "block-group (neighbourhood) fixed effects; only significance at p<0.05 flagged with *; SE printed only for ln(network distance)"
  },
  {
   "model_id": "T3-T4",
   "table": "3",
   "column": "T4",
   "page": 6,
   "dep_var": "ln(sales price, 2005 constant USD)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 913,
   "r2": 0.837,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "2007-2008 (operation)",
   "notes": "block-group (neighbourhood) fixed effects; only significance at p<0.05 flagged with *; SE printed only for ln(network distance)"
  }
 ],
 "coefficients": [
  {
   "model_id": "T3-T1",
   "var_name_printed": "age",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": -0.004,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "age",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": -0.001,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "age",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": -0.003,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "age",
   "taxonomy_id": "age",
   "x_transform": "level",
   "x_unit": "years",
   "beta": -0.006,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "squared age",
   "taxonomy_id": "age",
   "x_transform": "squared",
   "x_unit": "years",
   "beta": 4.37e-05,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "squared age",
   "taxonomy_id": "age",
   "x_transform": "squared",
   "x_unit": "years",
   "beta": 2.59e-05,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "squared age",
   "taxonomy_id": "age",
   "x_transform": "squared",
   "x_unit": "years",
   "beta": 4.16e-05,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "squared age",
   "taxonomy_id": "age",
   "x_transform": "squared",
   "x_unit": "years",
   "beta": 8.21e-05,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "height",
   "taxonomy_id": "storeys",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.125,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "story height (number of stories); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "height",
   "taxonomy_id": "storeys",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.062,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "story height (number of stories); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "height",
   "taxonomy_id": "storeys",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.076,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "story height (number of stories); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "height",
   "taxonomy_id": "storeys",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.053,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "story height (number of stories); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "no fuel",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.796,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "dummy for no heating fuel; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "no fuel",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.302,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "dummy for no heating fuel; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "no fuel",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.032,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "dummy for no heating fuel; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "no fuel",
   "taxonomy_id": "heating",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": -0.794,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "dummy for no heating fuel; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "central air conditioning",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.045,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "central air conditioning",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.08,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "central air conditioning",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.09,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "central air conditioning",
   "taxonomy_id": "air_conditioning",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.101,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "building grade",
   "taxonomy_id": "condition",
   "x_transform": "level",
   "x_unit": "ordinal (1-5)",
   "beta": 0.034,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "quality of structure, below average to excellent (1-5); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "building grade",
   "taxonomy_id": "condition",
   "x_transform": "level",
   "x_unit": "ordinal (1-5)",
   "beta": 0.027,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "quality of structure, below average to excellent (1-5); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "building grade",
   "taxonomy_id": "condition",
   "x_transform": "level",
   "x_unit": "ordinal (1-5)",
   "beta": 0.032,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "quality of structure, below average to excellent (1-5); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "building grade",
   "taxonomy_id": "condition",
   "x_transform": "level",
   "x_unit": "ordinal (1-5)",
   "beta": 0.059,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "quality of structure, below average to excellent (1-5); no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "# fireplaces",
   "taxonomy_id": "fireplace",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.089,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "# fireplaces",
   "taxonomy_id": "fireplace",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.064,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "# fireplaces",
   "taxonomy_id": "fireplace",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.057,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "# fireplaces",
   "taxonomy_id": "fireplace",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.004,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "ln (heated area)",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "sqft",
   "beta": 0.337,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "heated area in square feet, log; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "ln (heated area)",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "sqft",
   "beta": 0.392,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "heated area in square feet, log; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "ln (heated area)",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "sqft",
   "beta": 0.338,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "heated area in square feet, log; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "ln (heated area)",
   "taxonomy_id": "living_area",
   "x_transform": "log",
   "x_unit": "sqft",
   "beta": 0.455,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "medium",
   "notes": "heated area in square feet, log; no SE printed, * = significant at p<0.05"
  },
  {
   "model_id": "T3-T1",
   "var_name_printed": "ln (network distance)",
   "taxonomy_id": "transit_distance",
   "x_transform": "log",
   "x_unit": "ft",
   "beta": 0.123,
   "se": 0.028,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "log of network distance (feet) to nearest light rail station; SE printed in table; * = p<0.05"
  },
  {
   "model_id": "T3-T2",
   "var_name_printed": "ln (network distance)",
   "taxonomy_id": "transit_distance",
   "x_transform": "log",
   "x_unit": "ft",
   "beta": 0.169,
   "se": 0.022,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "log of network distance (feet) to nearest light rail station; SE printed in table; * = p<0.05"
  },
  {
   "model_id": "T3-T3",
   "var_name_printed": "ln (network distance)",
   "taxonomy_id": "transit_distance",
   "x_transform": "log",
   "x_unit": "ft",
   "beta": 0.148,
   "se": 0.027,
   "t": null,
   "p": null,
   "p_stars": "*",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "log of network distance (feet) to nearest light rail station; SE printed in table; * = p<0.05"
  },
  {
   "model_id": "T3-T4",
   "var_name_printed": "ln (network distance)",
   "taxonomy_id": "transit_distance",
   "x_transform": "log",
   "x_unit": "ft",
   "beta": 0.052,
   "se": 0.033,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 6,
   "confidence": "high",
   "notes": "log of network distance (feet) to nearest light rail station; SE printed in table; * = p<0.05"
  }
 ]
}