Table 5 Heterogeneity analysis by city size.

From: The nonlinear relationship between urban design form and energy efficiency

Variables

Small & medium cities

Large & mega cities

IUFI (Regime 1)

0.112** (0.051)

0.045 (0.062)

IUFI (Regime 2)

0.452* (0.038)

0.365*** (0.041)

IUFI (Regime 3)

0.310*** (0.055)

0.156* (0.048)

Controls

Yes

Yes

Year/City FE

Yes

Yes

Observations

2450

1540

R-squared

0.745

0.812