{
 "record_id": "8acb5243fed06bb1f23f1332908a7f46169463e4",
 "eligible": true,
 "exclusion_reason": null,
 "study": {
  "title": "Willingness to Pay for Access to Piped Water using Hedonic Pricing Model",
  "year": 2022,
  "doi": "10.15408/etk.v21i1.16984",
  "country": "Pakistan",
  "region_city": "Pakistan (urban and rural, four provinces)",
  "sample_start": 2013,
  "sample_end": 2014,
  "property_type": "mixed",
  "price_type": "rent",
  "data_source": "PSLM 2013-14 household survey (15,884 households); self-reported monthly rental value of the dwelling (owners and renters)",
  "document_type": "journal",
  "estimators": [
   "OLS"
  ],
  "spatial_method": "none (province and region dummies)",
  "time_fe": false,
  "location_fe": true,
  "se_type": "unknown",
  "n_obs_total": 15884,
  "ai_methods": [],
  "notes": "WARNING: the full regression table referred to in the text ('Table 2 indicates the estimation results') is NOT printed in the published PDF; the only printed coefficients are the piped-water-connection coefficients in Table 4 (p. 8, WTP calculation, four subsamples: rural, urban, rented, owned) and, in the text (p. 8), the urban-model coefficients for number of rooms (0.20409) and toilet inside the house (0.06167). No SEs, t or stars available; the text states 'all variables are significant at 5%' except a few. Semi-log model: dependent variable = log of monthly rental value (PKR), interpreted as exp(beta)-1. Sub-sample sizes not printed (urban 5,149 and rural 10,735 households in Table 3 descriptives). Quality: low (survey-reported rents, missing table)."
 },
 "models": [
  {
   "model_id": "T4-rural",
   "table": "4",
   "column": "Rural region",
   "page": 8,
   "dep_var": "log of monthly rental value of the house (PKR)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 10735,
   "r2": null,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Rural region subsample; semi-log hedonic rent model with house, neighbourhood, sanitation, province and region controls; only the piped-water coefficient is printed (Table 4)"
  },
  {
   "model_id": "T4-urban",
   "table": "4",
   "column": "Urban region",
   "page": 8,
   "dep_var": "log of monthly rental value of the house (PKR)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": 5149,
   "r2": null,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Urban region subsample; semi-log hedonic rent model with house, neighbourhood, sanitation, province and region controls; only the piped-water coefficient is printed (Table 4)"
  },
  {
   "model_id": "T4-rented",
   "table": "4",
   "column": "Rented houses",
   "page": 8,
   "dep_var": "log of monthly rental value of the house (PKR)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": null,
   "r2": null,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Rented houses subsample; semi-log hedonic rent model with house, neighbourhood, sanitation, province and region controls; only the piped-water coefficient is printed (Table 4)"
  },
  {
   "model_id": "T4-owned",
   "table": "4",
   "column": "Owner-occupied houses",
   "page": 8,
   "dep_var": "log of monthly rental value of the house (PKR)",
   "dep_transform": "log",
   "estimator": "OLS",
   "n_obs": null,
   "r2": null,
   "se_or_t_in_parentheses": "none",
   "sample_subset": "Owner-occupied houses subsample; semi-log hedonic rent model with house, neighbourhood, sanitation, province and region controls; only the piped-water coefficient is printed (Table 4)"
  }
 ],
 "coefficients": [
  {
   "model_id": "T4-rural",
   "var_name_printed": "Drinking-Water Characteristics (piped water connection)",
   "taxonomy_id": "public_services",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.0238,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Dummy = 1 if household has a piped water connection inside the house; coefficient reproduced in the WTP table (Table 4), no SE/t printed; text claims significance at 5%"
  },
  {
   "model_id": "T4-urban",
   "var_name_printed": "Drinking-Water Characteristics (piped water connection)",
   "taxonomy_id": "public_services",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.07087,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Dummy = 1 if household has a piped water connection inside the house; coefficient reproduced in the WTP table (Table 4), no SE/t printed; text claims significance at 5%"
  },
  {
   "model_id": "T4-rented",
   "var_name_printed": "Drinking-Water Characteristics (piped water connection)",
   "taxonomy_id": "public_services",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.03192,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Dummy = 1 if household has a piped water connection inside the house; coefficient reproduced in the WTP table (Table 4), no SE/t printed; text claims significance at 5%"
  },
  {
   "model_id": "T4-owned",
   "var_name_printed": "Drinking-Water Characteristics (piped water connection)",
   "taxonomy_id": "public_services",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.05122,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Dummy = 1 if household has a piped water connection inside the house; coefficient reproduced in the WTP table (Table 4), no SE/t printed; text claims significance at 5%"
  },
  {
   "model_id": "T4-urban",
   "var_name_printed": "No of rooms",
   "taxonomy_id": "bedrooms",
   "x_transform": "level",
   "x_unit": "count",
   "beta": 0.20409,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Number of rooms (not bedrooms); coefficient quoted in the text for the urban model (exp(0.20409)=1.26327); no SE/t"
  },
  {
   "model_id": "T4-urban",
   "var_name_printed": "Toilet facility inside house",
   "taxonomy_id": "other",
   "x_transform": "binary",
   "x_unit": "binary",
   "beta": 0.06167,
   "se": null,
   "t": null,
   "p": null,
   "p_stars": "",
   "ci_lo": null,
   "ci_hi": null,
   "page": 8,
   "confidence": "medium",
   "notes": "Dummy for toilet inside the house (sanitation); coefficient quoted in the text for the urban model (exp(0.06167)=1.07315); no SE/t"
  }
 ]
}