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Table 3 Distributions of relative risks for arrhythmia caused by six air pollutants on lags of different lengths (in days)a

From: Associations between air pollution and outpatient visits for arrhythmia in Hangzhou, China

Lag PM 2.5 PM 10 SO 2 NO 2 CO O3
0 1.009 (0.998–1.020) 1.003 (0.995–1.011) 1.045 (0.997–1.095) 1.023 (0.999–1.047) 1.084
(0.943, 1.246)
0.997
(0.979, 1.015)
1 0.996 (0.984–1.008) 1.001 (0.993–1.010) 1.030 (0.986–1.076) 1.023 (0.999–1.048) 1.031
(0.890, 1.196)
0.999
(0.983, 1.015)
2 1.006 (0.994–1.018) 1.004 (0.996–1.013) 1.030 (0.987–1.075) 1.007 (0.999–1.030) 1.023
(0.886, 1.826)
0.996
(0.981, 1.012)
3 0.994 (0.984–1.005) 0.997 (0.989–1.004) 1.009 (0.969–1.051) 1.012 (0.992–1.033) 0.919
(0.804, 1.049)
0.993
(0.980, 1.007)
0–3 1.006 (0.991–1.022) 1.007 (0.996–1.017) 1.119 (1.045–1.199) 1.067 (1.036–1.099) 1.113
(0.941, 1.316)
0.991
(0.971, 1.012)
  1. a For PM2.5, PM10, SO2, NO2, and O3, the relative risks were associated with increments of 10 μg/m3; for CO, the increment was 1 mg/m3