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. 2023 Jan 27;11:973499. doi: 10.3389/fpubh.2023.973499

Table 4.

Results of robustness test.

Variable M4-1 M4-2 M4-3 M4-4
Health Health Health Health
ER 0.456 *** 0.764 *** 0.177 ***
(0.034) (0.134) (0.018)
ER1 0.518 ***
(0.042)
Control Y Y Y Y
Year Y Y Y Y
Pro Y Y Y Y
N 80390 80390 80390 28111
PseudoR2 0.0819 0.0822 0.0837 0.0827

The parentheses are standard errors, and the standard errors of the model are clustered to the individual level. ***, **, and * indicate significance at the 1%, 5%, and 10% levels, respectively. Control means the control variables, and Year and Pro means the fixed effect of year and province, respectively.