Table 2.

Matrices of correlation coefficients among AECOPD hospitalizations and environmental factors in Ganzhou, 2016–2019.

Index	Tmean	PM2.5	PM10	NO2	Total	Male	Female
Tmean	1	− 0.246**	− 0.163**	− 0.465**	− 0.309**	− 0.216**	− 0.229**
PM2.5			0.954**	0.637**	− 0.077**	− 0.043	− 0.016
PM10				0.676**	− 0.022	− 0.005	0.007
NO2					0.126**	0.064*	0.123**
Total						0.665**	0.604**
Male							− 0.093**
Female							1