Skip to main content
. 2023 Jan 25;131(1):017004. doi: 10.1289/EHP11155

Figure 1.

Figure 1 is a flowchart with 6 steps. Step 1: There are 484 cases of women in SEPAGES. Step 2: There are 405 cases of children with their mother's exposure to particulate matter, after excluding 79 cases in which no personal particulate matter was sampled. Step 3: There are 387 children with oxidative potential from their mother, excluding 17 cases of no sample valid for oxidative potential analysis and 1 case of oxidative potential less than 0. Step 4: There are 325 cases of children with lung function measurements at 6 weeks, of which 284 cases are with nitrogen multiple-breath washout and 309 cases are with tidal breathing flow-volume loops. 31 cases were excluded with no clinical visit at both 6 weeks and 3 years. Out of 325, 108 cases were excluded for no clinical visit at 3 years or for airwave oscillometry not being valid, and 31 cases were excluded for no clinical visit at 6 weeks. Step 5: There are 248 cases of children with airwave oscillometry at 3 years; of those, 197 cases are with nitrogen multiple-breath washout and 205 cases are with tidal breathing flow-volume loops. Step 6: There are 356 children with their mother's oxidative potential exposure and at least one lung function measurement.

Flow chart for the selection of the study population. Note: *PM2.5 net weight <4μg. AOS, airwave oscillometry; LF, lung function; N2MBW, nitrogen multiple-breath washout; OP, oxidative potential; PM, particulate matter; PM2.5, PM with aerodynamic diameter <2.5μm; TBFVL, tidal breathing flow-volume loops.