1{2 "record_id": "9dd3ef8baea1541e7438928532ebd498c89ffa88",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Hedonic Valuation of Real Estate Properties in Nigeria",7 "year": 2018,8 "doi": "10.15641/jarer.v1i1.452",9 "country": "Nigeria",10 "region_city": "Lagos metropolis (Island submarket: Ikoyi, Victoria Island, Lekki)",11 "sample_start": 2010,12 "sample_end": 2016,13 "property_type": "mixed",14 "price_type": "transaction",15 "data_source": "Sales transactions collected from registered real estate firms (NIESV/ESVARBON), 321 observations, 256 used for estimation",16 "document_type": "journal",17 "estimators": [18 "OLS"19 ],20 "spatial_method": "none",21 "time_fe": false,22 "location_fe": false,23 "se_type": "OLS",24 "n_obs_total": 256,25 "ai_methods": [],26 "notes": "Linear functional form, dependent variable = sale price in Naira deflated by CPI. Table 4 reports coefficient, t-ratio and p-value (no SE). Model estimated on 80% training sample (256), 65 holdout. High-income submarket. R2=0.766, adj R2=0.757."27 },28 "models": [29 {30 "model_id": "T4-c1",31 "table": "4",32 "column": "1",33 "page": 10,34 "dep_var": "Sale price in Naira (CPI-deflated)",35 "dep_transform": "level",36 "estimator": "OLS",37 "n_obs": 256,38 "r2": 0.766,39 "se_or_t_in_parentheses": "t",40 "sample_subset": "Training set (80% of 321 transactions)"41 }42 ],43 "coefficients": [44 {45 "model_id": "T4-c1",46 "var_name_printed": "Bedrooms",47 "taxonomy_id": "bedrooms",48 "x_transform": "level",49 "x_unit": "count",50 "beta": 8664822.596,51 "se": null,52 "t": 0.738,53 "p": 0.461,54 "p_stars": "",55 "ci_lo": null,56 "ci_hi": null,57 "page": 10,58 "confidence": "high",59 "notes": ""60 },61 {62 "model_id": "T4-c1",63 "var_name_printed": "Bathrooms",64 "taxonomy_id": "bathrooms",65 "x_transform": "level",66 "x_unit": "count",67 "beta": -20051336.87,68 "se": null,69 "t": -1.448,70 "p": 0.149,71 "p_stars": "",72 "ci_lo": null,73 "ci_hi": null,74 "page": 10,75 "confidence": "high",76 "notes": ""77 },78 {79 "model_id": "T4-c1",80 "var_name_printed": "Property type",81 "taxonomy_id": "dwelling_type",82 "x_transform": "other",83 "x_unit": "index",84 "beta": 8076944.769,85 "se": null,86 "t": 1.144,87 "p": 0.254,88 "p_stars": "",89 "ci_lo": null,90 "ci_hi": null,91 "page": 10,92 "confidence": "high",93 "notes": "Ordinal construction-style code 1-6 (duplex=1, detached=2, semi-detached=3, terrace=4, flat=5, others=6) entered as a single numeric regressor"94 },95 {96 "model_id": "T4-c1",97 "var_name_printed": "Boys' quarters",98 "taxonomy_id": "other",99 "x_transform": "level",100 "x_unit": "count",101 "beta": 102816020.589,102 "se": null,103 "t": 15.151,104 "p": 0.0,105 "p_stars": "",106 "ci_lo": null,107 "ci_hi": null,108 "page": 10,109 "confidence": "high",110 "notes": "Printed name: Boys' quarters = number of servants' (BQ) rooms"111 },112 {113 "model_id": "T4-c1",114 "var_name_printed": "Parking",115 "taxonomy_id": "parking",116 "x_transform": "level",117 "x_unit": "count",118 "beta": 9526774.351,119 "se": null,120 "t": 2.615,121 "p": 0.009,122 "p_stars": "",123 "ci_lo": null,124 "ci_hi": null,125 "page": 10,126 "confidence": "high",127 "notes": "Number of parking lots"128 },129 {130 "model_id": "T4-c1",131 "var_name_printed": "Age",132 "taxonomy_id": "age",133 "x_transform": "level",134 "x_unit": "years",135 "beta": -1635743.326,136 "se": null,137 "t": -1.068,138 "p": 0.286,139 "p_stars": "",140 "ci_lo": null,141 "ci_hi": null,142 "page": 10,143 "confidence": "high",144 "notes": "Property age in years"145 },146 {147 "model_id": "T4-c1",148 "var_name_printed": "Floors",149 "taxonomy_id": "storeys",150 "x_transform": "level",151 "x_unit": "count",152 "beta": 4539570.089,153 "se": null,154 "t": 1.455,155 "p": 0.147,156 "p_stars": "",157 "ci_lo": null,158 "ci_hi": null,159 "page": 10,160 "confidence": "high",161 "notes": "Number of floors"162 },163 {164 "model_id": "T4-c1",165 "var_name_printed": "Security fence",166 "taxonomy_id": "other",167 "x_transform": "binary",168 "x_unit": "binary",169 "beta": -10789691.84,170 "se": null,171 "t": -0.229,172 "p": 0.819,173 "p_stars": "",174 "ci_lo": null,175 "ci_hi": null,176 "page": 10,177 "confidence": "high",178 "notes": "Printed name: Security fence (1 if available)"179 },180 {181 "model_id": "T4-c1",182 "var_name_printed": "Sea view",183 "taxonomy_id": "view",184 "x_transform": "binary",185 "x_unit": "binary",186 "beta": 154767562.522,187 "se": null,188 "t": 4.832,189 "p": 0.0,190 "p_stars": "",191 "ci_lo": null,192 "ci_hi": null,193 "page": 10,194 "confidence": "high",195 "notes": "1 if sea view present"196 },197 {198 "model_id": "T4-c1",199 "var_name_printed": "Location",200 "taxonomy_id": "other",201 "x_transform": "other",202 "x_unit": "index",203 "beta": -26885403.503,204 "se": null,205 "t": -6.176,206 "p": 0.0,207 "p_stars": "",208 "ci_lo": null,209 "ci_hi": null,210 "page": 10,211 "confidence": "high",212 "notes": "Printed name: Location = neighbourhood code 1-5 (Ikoyi, Victoria Island, Lekki Phase 1, Lekki-Epe corridor...) entered as a single numeric regressor"213 }214 ]215}