Skip to main content
. 2018 Jan 19;126(1):017009. doi: 10.1289/EHP2239

Figure 1.

Figure 1 comprises six plots with confidence intervals respectively plotting adjusted mean difference (95 percent confidence interval) (y-axis) across exposure quartile midpoints (micrograms per cubic meter) (x-axis) for NO subscript 2 (p subscript F test equals 0.017, p subscript trend equals 0.023), NO subscript x (p subscript F test equals 0.030, p subscript trend equals 0.015), PM subscript 2.5 absorbance (p subscript F test equals 0.008, p subscript trend equals 0.065), PM subscript 2.5 (p subscript F test equals 0.001, p subscript trend equals 0.037), PM subscript 10 (p subscript F test equals 0.011, p subscript trend equals 0.002), and PM subscript coarse (p subscript F test equals 0.011, p subscript trend equals 0.001).

Adjusted associations between performance-based physical functioning and quartiles of residential air pollution exposure from linear mixed model analyses with p-values of F-tests for equality of means and trend tests using quartile midpoints (N=1,695 participants, n=4,105 observations). Models were adjusted for age, sex, education level, smoking, alcohol consumption, depression, physical activity, area-level socioeconomic status defined as the status score of the four-digit postal code area, and cross-products of time since baseline with education, alcohol consumption, and depression. Associations are presented as mean difference in physical performance score in the different quartiles as compared with the 1st quartile with 95% confidence intervals and were derived from models with exposure and exposure–time since baseline interaction.