1{2 "record_id": "98438191d74bdd40ba8f1ee8325b8fb8b7420348",3 "eligible": true,4 "exclusion_reason": null,5 "study": {6 "title": "Influence of Objective Factors on House Prices",7 "year": 2023,8 "doi": "10.54254/2754-1169/4/20221059",9 "country": "unknown",10 "region_city": "unknown (variables Carpet_area/Builtup_area/City_type suggest an Indian listing dataset)",11 "sample_start": 0,12 "sample_end": 0,13 "property_type": "unknown",14 "price_type": "listing",15 "data_source": "Unspecified dataset of 932 houses (SPSS); source, country, period and units not stated",16 "document_type": "conference",17 "estimators": [18 "OLS"19 ],20 "spatial_method": "none",21 "time_fe": false,22 "location_fe": false,23 "se_type": "unknown",24 "n_obs_total": 932,25 "ai_methods": [],26 "notes": "Very low-quality conference paper (ICEMGD 2022): stepwise OLS of house price (level) on carpet area, built-up area and hospital distance; only the final fitted equation (1) is printed, no coefficient table with SE/t; units, currency, country, period and price type are NOT stated (price_type 'listing' is an assumption). Taxi_dist, Market_dist, Parking_type, City_type, Rainfall dropped by stepwise selection. Flag for human review; exclude from primary synthesis (no variance information, unknown units)."27 },28 "models": [29 {30 "model_id": "EQ1-m3",31 "table": "eq. (1) / Table 5 model 3",32 "column": "3",33 "page": 5,34 "dep_var": "Price_house (house price, currency not stated; mean 6,084,695)",35 "dep_transform": "level",36 "estimator": "OLS",37 "n_obs": 898,38 "r2": 0.889,39 "se_or_t_in_parentheses": "none",40 "sample_subset": "Stepwise linear regression, final model with 3 retained variables (Carpet_area, Builtup_area, Hospital_dist); N from ANOVA df (total 897 => 898); adjusted R2 0.888"41 }42 ],43 "coefficients": [44 {45 "model_id": "EQ1-m3",46 "var_name_printed": "Carpet_area (X_C)",47 "taxonomy_id": "living_area",48 "x_transform": "level",49 "x_unit": "not stated (carpet area, mean 1,512; likely sqft)",50 "beta": 5764.491,51 "se": null,52 "t": null,53 "p": null,54 "p_stars": "",55 "ci_lo": null,56 "ci_hi": null,57 "page": 5,58 "confidence": "medium",59 "notes": "Coefficient read from printed equation (1); no SE/t table printed, text states t-test p = 0.000 for retained variables"60 },61 {62 "model_id": "EQ1-m3",63 "var_name_printed": "Builtup_area (X_B)",64 "taxonomy_id": "living_area",65 "x_transform": "level",66 "x_unit": "not stated (built-up/construction area, mean 1,795; likely sqft)",67 "beta": -7804.659,68 "se": null,69 "t": null,70 "p": null,71 "p_stars": "",72 "ci_lo": null,73 "ci_hi": null,74 "page": 5,75 "confidence": "medium",76 "notes": "Built-up (construction) area, entered alongside carpet area; negative sign; coefficient from equation (1), no SE"77 },78 {79 "model_id": "EQ1-m3",80 "var_name_printed": "Hospital_dist (X_H)",81 "taxonomy_id": "hospital_distance",82 "x_transform": "level",83 "x_unit": "not stated (mean 13,072; likely metres)",84 "beta": 87.981,85 "se": null,86 "t": null,87 "p": null,88 "p_stars": "",89 "ci_lo": null,90 "ci_hi": null,91 "page": 5,92 "confidence": "medium",93 "notes": "Distance to hospital; positive sign; coefficient from equation (1), no SE"94 }95 ]96}