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. Author manuscript; available in PMC: 2025 May 1.
Published in final edited form as: Air Qual Atmos Health. 2024 Jan 9;17(5):967–978. doi: 10.1007/s11869-023-01492-0

Table 3:

Primary results, intent-to-treat framework

Estimate (95% CI) P-value
Systolic Blood Pressure
 Placebo treatment (n = 75) Reference
 Education treatment (n = 74) −3.46 (−11.45, 4.54) 0.39
 Filtration treatment (n = 76) 0.25 (−7.73, 8.24) 0.95
Diastolic Blood Pressure
 Placebo treatment (n = 75) Reference
 Education treatment (n = 74) −1.00 (−5.42, 3.42) 0.65
 Filtration treatment (n = 76) −0.58 (−4.97, 3.81) 0.79
Forced Vital Capacity
 Placebo treatment (n = 31) Reference
 Education treatment (n = 30) −0.09 (−0.24, 0.07) 0.28
 Filtration treatment (n = 40) 0.01 (−0.14, 0.16) 0.89
Forced Expiratory Volume in 1 Second
 Placebo treatment (n = 31) Reference
 Education treatment (n = 30) −0.11 (−0.24, 0.02) 0.10
 Filtration treatment (n = 40) 0.01 (−0.11, 0.13) 0.90
Forced Expiratory Volume in 1 Second / Forced Vital Capacity Ratio
 Placebo treatment (n = 31) Reference
 Education treatment (n = 30) −0.02 (−0.05, 0.00) 0.06
 Filtration treatment (n = 40) 0.00 (−0.03, 0.02) 0.71

Models adjusted for baseline (Winter 1) outcome; model includes nested random term: participant:home:cohort:area. CI = confidence interval