Table 5.
Econometric Estimates of the Relationship Between PCDI and CRF of adolescents.
| Variable | L1000 | L800 | ||
|---|---|---|---|---|
| Linear (Male) | Quadratic (Male) | Linear (Female) | Quadratic (Female) | |
| LPCDI | −0.027 ** | 0.093 ** | −0.022 | 0.116 ** |
| (−2.25) | (2.05) | (−1.53) | (2.52) | |
| LPCDI2 | −0.007 *** | −0.008 *** | ||
| (−2.72) | (−3.07) | |||
| LURBAN | −0.001 | 0.001 | 0.000 | 0.003 |
| (−0.23) | (0.20) | (0.05) | (0.45) | |
| LCPI | 0.010 | −0.054 | 0.124 | 0.049 |
| (0.15) | (−0.82) | (1.50) | (0.59) | |
| _cons | 5.628 *** | 5.423 *** | 5.045 *** | 4.808 *** |
| (16.17) | (14.44) | (11.86) | (10.94) | |
| R2 | 0.615 | 0.617 | 0.514 | 0.518 |
| F | 226.681 | 225.073 | 138.782 | 131.749 |
| P | 0.000 | 0.000 | 0.000 | 0.000 |
| N | 1890 | 1890 | 1890 | 1890 |
L1000, log of running time for 1000 m (boys); L800, log of running time for 800 m (girls); LPCDI, log of real per capita disposable income; LPCDI2, the squared term of LPCDI. LURBAN, log of urbanization rate; LCPI, log of consumer price index; The White (1980) robust regression. t statistics in parentheses. *, **and *** denote statistical significance at the 10%, 5%, and 1% levels, respectively.