Table 3

Air pollution exposure in patients with COPD and without COPD

Type of pollutantFEV1 (mL)
β (95% CI)
FVC (mL)
β (95% CI)
COPDNo COPDCOPDNo COPD
PM10−25.31
(−36.81 to 13.80)*
−2.81
(−17.69 to 12.07)
−15.34
(−53.32 to 22.65)
16.73
(−32.15 to 1.32)
PM2.5−53.81
(−107.09 to 0.53)*
−39.00
(−60.02 to 17.98)*
−55.36
(−111.48 to 0.77)
1.42
(−20.37 to 23.22)
NO2−74.88
(−146.61 to 3.15)*
−49.30
(−73.13 to 25.47)*
−82.42
(−157.97 to 6.86)*
−17.72
(−42.44 to 6.99)
  • *p<0.05. Models adjusted for age, sex, smoking status, daily tobacco consumption, physical activity, education, BMI, alcohol, place of residence, household income, type of indoor fuel use, daily fruit and vegetables consumption. IQR PM10: 3 years: 31.2 µg/m3; IQR PM2.5: 3 years: 26.1 µg/m3; IQR NO2: 3 years: 26.8 µg/m3.

  • BMI, body mass index ; NO2, nitrogen dioxide; PM10, particulate matter with an aerodynamic diameter less than or equal to 10 µm; PM2.5, particulate matter with an aerodynamic diameter less than or equal to 2.5 µm.