From: The effect of ambient particle matters on hospital admissions for cardiac arrhythmia: a multi-city case-crossover study in China
Variables
PM2.5
PM10
NO2
SO2
CO
1.00
0.87*
0.67*
0.61*
0.68*
―
1.00*
0.64*
0.63*
0.60*
0.54*
0.59*
0.55*