Table 2.

Variables measurements and description

Variables type	Variable name	Measurement	Description
Dependent variables	HFMD	The incidence rate of HFMD	Number of new cases of HFMD in population during a certain period of time / Number of people exposed during the same period
Independent variables	Waterfall	Average monthly rainfall	Add up the average daily rainfall and divide by the number of days in the month
	Temperature	Monthly average temperature	Add up the average daily temperature and divide by the number of days in the month
	Humidity	Monthly average relative humidity	Add up the average daily humidity and divide by the number of days in the month