Table 4.

Meanings and explanations of indicators of control variables.

Variable Name	Variable Definition	Variable Declaration
GEN	Gender Factors	Ratio of male to female population
ECO	economic factors	The proportion of the gross regional product in the gross national product of the year
IND	Secondary industry factors	The secondary industry accounts for the proportion of the total industry in the region
CONS	Consumption factors	The proportion of total regional consumption in the total national consumption of the year
ASS	Fixed asset factors	The proportion of completed investment in fixed assets accounted for the total amount of total fixed assets investment in the country in that year