Table S4. Multiple regression analyses of changes in children’s lung function associated with ADD of PM_2.5¹, stratified analyses for less and more sweating after sports activities².

Lung function	Less sweating			More sweating
	β3 (95% CI)	P value		β3 (95% CI)	P value
FVC (mL)	−13.53 (−26.40, −0.65)	0.0396		−1.01 (−14.30, 12.28)	0.8810
FEV1 (mL)	−13.85 (−24.92, −2.78)	0.0145		−0.52 (−10.94, 9.89)	0.9210
PEF (mL/s)	−14.15 (−50.70, 22.40)	0.4458		8.09 (−25.79, 41.97)	0.6382
FEV1/FVC (%)	−0.06 (−0.43, 0.31)	0.7507		0.07 (−0.26, 0.40)	0.6800

¹, table data: β (95%CI) P value, Result variable: lung function variables, Exposure variable: ADD of PM_2.5, µg/kg-d; ², adjust for: Age, Weight, Height, Parental smoking, Sleep in own bed/room, Kitchen style, Cook fuel, Ventilation use, Heat in winter, Heat fuel, Air purifier, Keep pets, Mold, Air fresher, Parents’ education and occupation, Children recent respiratory infections, Parental history of asthma, Pre-birth and Breast feeding, exercise-related variables and Nutrition-related variables; ³, β, the estimated changes of lung function associated with ADD of PM_2.5; CI, confidence interval.