Skip to main content

Table 2 RERI and AP for additive interaction between air pollutants and lifestyle categories

From: Associations of ambient air pollution and lifestyle with the risk of NAFLD: a population-based cohort study

Exposure

Interaction

Lifestyle

Moderately healthy

Least healthy

P-overall

High pollution of wAPS

RERI (95% CI)

0.36(0.09,0.63)

0.29(-0.06,0.64)

0.033

 

AP (95% CI)

0.19(0.04,0.35)

0.12(-0.03,0.27)

0.055

 High pollution of NO2

RERI (95% CI)

0.35(0.09,0.62)

0.37(0.03,0.70)

0.024

 

AP (95% CI)

0.20(0.04,0.36)

0.16(0.01,0.31)

0.045

 High pollution of NOx

RERI (95% CI)

0.30(0.04,0.57)

0.32(-0.01,0.65)

0.057

 

AP (95% CI)

0.18(0.01,0.34)

0.14(-0.01,0.30)

0.092

 High pollution of PM2.5

RERI (95% CI)

0.24(-0.03,0.50)

0.14(-0.21,0.48)

0.206

 

AP (95% CI)

0.14(-0.03,0.31)

0.06(-0.10,0.22)

0.244

 High pollution of PM10

RERI (95% CI)

-0.05(-0.34,0.24)

0.07(-0.27,0.41)

0.699

 

AP (95% CI)

-0.03(-0.22,0.16)

0.03(-0.13,0.20)

0.691

 High pollution of PM2.5−10

RERI (95% CI)

-0.07(-0.37,0.24)

0.01(-0.35,0.37)

0.820

 

AP (95% CI)

-0.04(-0.23,0.14)

0.01(-0.16,0.17)

0.816

  1. Abbreviations: NO2, nitrogen dioxide; NOx, nitrogen oxides; PM2.5, particulate matter with aerodynamic diameter ≤ 2.5 μm; PM10, particulate matter with aerodynamic diameter ≤ 10 μm; PM2.5−10, particulate matter with aerodynamic diameter in 2.5–10 μm; wAPS, weighted air pollution score; RERI, relative excess risk due to the interaction; AP, attributable proportion due to the interaction; CI, confidence interval
  2. Lifestyle model: adjusted for age, sex, ethnicity, BMI, education level, employment status, household income, Townsend deprivation index, 24-hour weighted average noise, greenspace percentage in 1000 m buffer, and proximity to major roads
  3. Definition of lifestyle categories: most healthy (scored 0), moderately healthy (scored 1, or 2), and least healthy (scored 3, 4, 5, or 6)
  4. To estimate the RERI and AP, the low air pollution category and the most healthy lifestyle (scored 0) groups were the reference categories