Table 2.

Descriptive statistics: CFPS2012, 2014, 2016.

Variables	Mean	Standard Deviation
Dependent Variables
Respiratory diseases (%)	1.44	0.12
Circulatory system diseases (%)	6.57	0.17
Independent Variables
Weather Conditions
Mean Temperature (°C)	21.62	9.48
Humidity (%)	71.99	8.69
Precipitation (mm)	127.57	109.72
Sunshine (hour)	181.89	53.06
Demographic characteristics of CFPS surveys
Age (year)	48.66	14.81
Mean annual household income a (log form)	7.14	4.60
Male (%)	48.09	0.50
Urban (%)	46.63	0.50
Labor force participation (%)	72.80	0.44
Primary school or less (%)	26.67	0.46
Middle/high school (%)	29.93	0.46
University or above (%)	43.40	0.49
Married (%)	85.69	0.35
Smoke (%)	29.84	0.46
Drink (%)	16.29	0.37
Coal (%)	6.67	0.25
Observations	56,958

Note: ^a Log transformed annual household income (CNY).