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Table 3 Percentage changes in hospital admissions associated with a 10-μg/m3 increase in NO2 on lag 0 days and lag 04 days

From: Urban–rural disparities in the association of nitrogen dioxide exposure with cardiovascular disease risk in China: effect size and economic burden

 

Percentage change in % (95% CI)

Lag 0

Lag 04

Cardiovascular disease

  

    Total

1.42 (0.92, 1.92)

0.50 (−0.47, 1.49)

    Urban

1.51 (0.82, 2.21)

1.43 (0.26, 2.62)

    Rural

1.34 (0.58, 2.10)

−0.52 (−1.89, 0.88)

    p*

0.738

0.035

Coronary heart disease

  

    Total

1.47 (0.59, 2.35)

0.98 (−0.67, 2.65)

    Urban

0.97 (−0.11, 2.07)

2.05 (− 0.13, 4.28)

    Rural

2.18 (0.86, 3.51)

−0.46 (−2.66, 1.79)

    p*

0.169

0.116

Ischemic stroke

  

    Total

1.57 (0.64, 2.51)

1.68 (0.08, 3.29)

    Urban

1.92 (0.56, 3.29)

2.22 (−0.08, 4.59)

    Rural

1.22 (−0.11, 2.57)

1.19 (−1.00, 3.42)

    p*

0.477

0.527

Hypertension

  

    Total

2.54 (1.21, 3.88)

0.46 (−1.97, 2.94)

    Urban

2.49 (0.50, 4.53)

0.11 (−3.71, 4.08)

    Rural

2.45 (0.61, 4.32)

0.41 (−2.69, 3.61)

    p*

0.973

0.907

  1. * The p values were for difference tests in the associations between urban and rural areas
  2. Lag 0 corresponded to the present day, and lag 0–4 represented the four-day moving average of the present and previous day