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. 2022 Jun 22;19(13):7612. doi: 10.3390/ijerph19137612

Table 6.

Results of quantile regressions for panel data.

(1) (2) (3) (4) (5)
Q (10) Q (25) Q (50) Q (75) Q (90)
Panel A: Urban areas
Grain 0.017 *** (0.006) 0.017 *** (0.004) 0.015 *** (0.003) 0.014 *** (0.005) 0.013 ** (0.006)
Red meat −0.015 (0.015) −0.013 (0.012) −0.011 (0.007) −0.009 (0.006) −0.008 (0.008)
Poultry 0.020 ** (0.008) 0.018 *** (0.006) 0.016 *** (0.004) 0.014 ** (0.006) 0.012 (0.008)
Aquatic products 0.004 (0.006) 0.002 (0.004) −0.001 (0.004) −0.005 (0.005) −0.008 (0.007)
Eggs 0.023 *** (0.007) 0.022 *** (0.005) 0.022 *** (0.003) 0.021 *** (0.004) 0.021 *** (0.006)
Dairy 0.012 (0.008) 0.011 * (0.006) 0.010 ** (0.004) 0.010 (0.006) 0.009 (0.008)
Vegetables 0.007 (0.009) 0.007 (0.005) 0.006 (0.013) 0.006 (0.023) 0.006 (0.028)
Fruits −0.004 (0.012) −0.005 (0.008) −0.005 (0.008) −0.005 (0.015) −0.005 (0.022)
Panel B: Rural areas
Grain 0.025 *** (0.008) 0.024 *** (0.006) 0.022 *** (0.004) 0.020 *** (0.005) 0.019 *** (0.007)
Red meat −0.020 (0.015) −0.019 (0.012) −0.017 ** (0.008) −0.015 * (0.009) −0.013 (0.014)
Poultry 0.030 *** (0.008) 0.030 *** (0.006) 0.028 *** (0.005) 0.027 *** (0.006) 0.026 *** (0.009)
Aquatic products 0.020 *** (0.006) 0.018 *** (0.004) 0.014 *** (0.004) 0.009 (0.008) 0.006 (0.011)
Eggs 0.030 *** (0.009) 0.030 *** (0.007) 0.029 *** (0.005) 0.029 *** (0.007) 0.028 *** (0.009)
Dairy 0.022 * (0.013) 0.021 ** (0.009) 0.020 ** (0.008) 0.019 * (0.011) 0.018 (0.017)
Vegetables 0.009 (0.013) 0.009 (0.009) 0.009 (0.007) 0.009 (0.009) 0.008 (0.013)
Fruits −0.002 (0.008) −0.004 (0.006) −0.007 (0.004) −0.009 (0.006) −0.011 (0.008)

Notes: Standard errors in parentheses are clustered at the provincial level. All regressions included control variables, including per capita GDP, proportion of output value of the primary industry, child support ratio, old-age dependency ratio, and illiteracy rate. Provincial fixed effects and year fixed effects are also controlled in the regressions. * p < 0.1, ** p < 0.05, *** p < 0.01.