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Table 3 Relative risk (95% CI) of daily hospital admissions for total and cause-specific CVD associated with a 10 μg/m3 increase in PM2.5 with different lag days in Lanzhou during 2014–2019

From: Acute effects of fine particulate matter (PM2.5) on hospital admissions for cardiovascular diseases in Lanzhou, China: a time-series study

Lag days Total IHD HRD HF CD
RR 95% CI RR 95% CI RR 95% CI RR 95% CI RR 95% CI
lag0 1.003 (0.994,1.013) 1.004 (0.992,1.015) 1.000 (0.987,1.013) 1.003 (0.990,1.016) 1.000 (0.990,1.010)
lag1 1.007 (0.998,1.017) 1.013 (1.001,1.025) 1.004 (0.990,1.017) 1.018 (1.005,1.038) 1.007 (1.001,1.018)
lag2 0.993 (0.983,1.003) 0.990 (0.978,1.002) 0.998 (0.984,1.011) 0.991 (0.977,1.004) 0.992 (0.982,1.002)
lag3 1.006 (0.997,1.016) 1.011 (1.000,1.023) 1.001 (0.988,1.014) 1.008 (0.995,1.022) 1.006 (0.996,1.016)
lag4 0.997 (0.987,1.006) 0.995 (0.984,1.007) 1.001 (0.988,1.014) 0.994 (0.981,1.007) 1.001 (0.992,1.011)
lag5 1.002 (0.992,1.012) 1.005 (0.993,1.017) 1.008 (0.995,1.021) 0.999 (0.985,1.013) 0.997 (0.987,1.007)
lag6 0.999 (0.989,1.010) 0.993 (0.980,1.005) 0.991 (0.977,1.005) 0.998 (0.984,1.012) 0.998 (0.988,1.009)
lag7 1.005 (0.996,1.015) 1.009 (0.998,1.021) 1.013 (1.001,1.026) 1.009 (0.996,1.022) 1.000 (0.991,1.010)
lag01 1.011 (1.001,1.020) 1.017 (1.005,1.028) 1.004 (0.990,1.017) 1.011 (0.998,1.025) 1.006 (0.997,1.017)
lag02 1.003 (0.993,1.014) 1.006 (0.994,1.019) 1.001 (0.987,1.016) 1.002 (0.987,1.017) 0.999 (0.988,1.010)
lag03 1.010 (0.998,1.021) 1.018 (1.004,1.032) 1.002 (0.986,1.018) 1.010 (0.994,1.026) 1.005 (0.993,1.017)
lag04 1.006 (0.994,1.018) 1.013 (0.999,1.028) 1.003 (0.986,1.019) 1.004 (0.987,1.021) 1.006 (0.994,1.019)
lag05 1.008 (0.995,1.021) 1.019 (1.003,1.034) 1.010 (0.993,1.028) 1.003 (0.985,1.020) 1.003 (0.990,1.016)
lag06 1.007 (0.994,1.020) 1.010 (0.995,1.027) 1.001 (0.983,1.019) 1.001 (0.983,1.019) 1.001 (0.988,1.015)
lag07 1.012 (0.999,1.025) 1.020 (1.004,1.036) 1.012 (0.997,1.032) 1.010 (0.992,1.028) 1.002 (0.988,1.015)