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Table 3 Associations of 10 μg/m3 increase in PM2.5 and PM10 with YLL and ER of deaths from COPD

From: The short term burden of ambient fine particulate matter on chronic obstructive pulmonary disease in Ningbo, China

Pollutants and model Years of life lost (95% CI) Percentage increase in death (95% CI)
PM2.5 (Single model)
 Total 0.91(0.16, 1.66) 1.32(0.52,2.12)
 Low concentration level 1.44(0.57, 2.32) 1.87(0.91, 2.83)
 High concentration level 0.32(−0.59, 1.23) 0.84(−0.10, 1.79)
PM2.5 + SO2
 Total 1.28(0.46,2.11) 1.61(0.74,2.48)
 Low concentration level 1.97(1.00, 2.93) 2.31(1.26, 3.37)
 High concentration level 0.65(−0.30, 1.60) 1.12(0.14, 2.11)
PM2.5 + NO2
 Total 1.07(0.22,1.91) 1.53(0.64,2.42)
 Low concentration level 1.45(0.45, 2.44) 1.98(0.97, 3.03)
 High concentration level 0.39(−0.59, 1.36) 0.99(−0.05, 1.97)
PM10 (Single model)
 Total 0.81(0.30,1.33) 1.07(0.51,1.63)
 Low concentration level 1.09(0.52, 1.66) 1.34(0.71,1.98)
 High concentration level 0.35(−0.31, 1.01) 0.72(0.03, 1.41)
PM10 + SO2
 Total 1.08(0.51,1.65) 1.28(0.66,1.89)
 Low concentration level 1.41(0.79, 2.04) 1.60(0.91, 2.29)
 High concentration level 0.59(−0.09, 1.28) 0.91(0.19, 1.63)
PM10 + NO2
 Total 0.96(0.38,1.55) 1.26(0.63,1.89)
 Low concentration level 1.18(0.53, 1.83) 1.51(0.82, 2.17)
 High concentration level 0.46(−0.25, 1.17) 0.85(1.01, 1.63)
  1. Associations in all concentrations and in low and high concentrations levels were both presented at lag04 (moving average concentrations from day 0 to day4). Single and two pollutants models were used. Data were collected from Ningbo, China, 2011–2015