Explanatory variables and related comparisons
| Explanatory variables | Whole (N = 27,034) | Expanded houses (N = 8,972) | No expansion houses (N = 18,062) |
|---|---|---|---|
| Whether or not expanded houses (yes = 1) | 0.33 (0.47) | / | / |
| Increment building areas (m2) | 28.68 (64.99) | 86.41 (87.97) | / |
| Times of housing expansion | 0.45 (0.75) | 1.36 (0.70) | / |
| Initial building area of main room (m2) | 198.09 (97.2) | 196.42 (79.3) | 198.92 (104.95) |
| Initial building area of auxiliar room (m2) | 28.65 (48.06) | 17.2 (35.6) | 34.34 (52.26) |
| Initial building area of shed (m2) | 2.64 (16.87) | 0.68 (5.64) | 3.62 (20.18) |
| Initial land area of main room (m2) | 88.16 (30.94) | 86.79 (26.76) | 88.84 (32.79) |
| Initial land area of auxiliar room (m2) | 24.19 (37.88) | 13.57 (25.65) | 29.46 (41.69) |
| Initial land area of shed (m2) | 2.64 (16.86) | 0.67 (5.62) | 3.62 (20.17) |
| Initial FAR of main room | 2.18 (0.57) | 2.24 (0.5) | 2.15 (0.61) |
| Initial FAR of auxiliar room | 0.59 (0.65) | 0.44 (0.66) | 0.67 (0.62) |
| Initial FAR of shed | 0.08 (0.28) | 0.03 (0.18) | 0.11 (0.31) |
| Age of household head | 43.23 (10.53) | 44.23 (9.71) | 42.73 (10.87) |
| Gender of household head (1 = male) | 0.74 (0.44) | 0.73 (0.44) | 0.74 (0.44) |
| Household size | 3.45 (1.46) | 3.69 (1.45) | 3.32 (1.45) |
| Number of household labors | 2.54 (1.24) | 2.75 (1.24) | 2.44 (1.23) |
| Number of urban Hukou | 2.00 (1.76) | 2.21 (1.85) | 1.90 (1.71) |
| Number of Household heads | 1.56 (0.67) | 1.64 (0.67) | 1.51 (0.68) |
| Road network density (km/km2) | 3.33 (0.82) | 3.56 (0.83) | 3.21 (0.79) |
| Convenience-of-living (number/km2) | 27.11 (39.53) | 34.16 (44.18) | 23.60 (36.50) |
| Farmland abundance percentage (%) | 0.28 (0.16) | 0.27 (0.16) | 0.28 (0.16) |
| Distance to downtown (km) | 5.89 (4.05) | 4.61 (3.74) | 6.52 (4.05) |
| Distance to town (km) | 2.99 (1.23) | 3.06 (1.18) | 2.96 (1.25) |
| Explanatory variables | Whole ( | Expanded houses ( | No expansion houses ( |
|---|---|---|---|
| Whether or not expanded houses (yes = 1) | 0.33 (0.47) | / | / |
| Increment building areas (m2) | 28.68 (64.99) | 86.41 (87.97) | / |
| Times of housing expansion | 0.45 (0.75) | 1.36 (0.70) | / |
| Initial building area of main room (m2) | 198.09 (97.2) | 196.42 (79.3) | 198.92 (104.95) |
| Initial building area of auxiliar room (m2) | 28.65 (48.06) | 17.2 (35.6) | 34.34 (52.26) |
| Initial building area of shed (m2) | 2.64 (16.87) | 0.68 (5.64) | 3.62 (20.18) |
| Initial land area of main room (m2) | 88.16 (30.94) | 86.79 (26.76) | 88.84 (32.79) |
| Initial land area of auxiliar room (m2) | 24.19 (37.88) | 13.57 (25.65) | 29.46 (41.69) |
| Initial land area of shed (m2) | 2.64 (16.86) | 0.67 (5.62) | 3.62 (20.17) |
| Initial FAR of main room | 2.18 (0.57) | 2.24 (0.5) | 2.15 (0.61) |
| Initial FAR of auxiliar room | 0.59 (0.65) | 0.44 (0.66) | 0.67 (0.62) |
| Initial FAR of shed | 0.08 (0.28) | 0.03 (0.18) | 0.11 (0.31) |
| Age of household head | 43.23 (10.53) | 44.23 (9.71) | 42.73 (10.87) |
| Gender of household head (1 = male) | 0.74 (0.44) | 0.73 (0.44) | 0.74 (0.44) |
| Household size | 3.45 (1.46) | 3.69 (1.45) | 3.32 (1.45) |
| Number of household labors | 2.54 (1.24) | 2.75 (1.24) | 2.44 (1.23) |
| Number of urban | 2.00 (1.76) | 2.21 (1.85) | 1.90 (1.71) |
| Number of Household heads | 1.56 (0.67) | 1.64 (0.67) | 1.51 (0.68) |
| Road network density (km/km2) | 3.33 (0.82) | 3.56 (0.83) | 3.21 (0.79) |
| Convenience-of-living (number/km2) | 27.11 (39.53) | 34.16 (44.18) | 23.60 (36.50) |
| Farmland abundance percentage (%) | 0.28 (0.16) | 0.27 (0.16) | 0.28 (0.16) |
| Distance to downtown (km) | 5.89 (4.05) | 4.61 (3.74) | 6.52 (4.05) |
| Distance to town (km) | 2.99 (1.23) | 3.06 (1.18) | 2.96 (1.25) |
Note(s): Standard deviations are in parentheses
Source(s): Authors' own work
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