Effect of NPAH Exposure on Lung Function of Children in Indoor Coal Combustion Environment

Table 3

Spearman’s correlation analysis results of the lung function and influencing factors.

	Heating season			Nonheating season
	BW (kg)	PM2.5 (μg·m^-3)	NPAH (ng·m^-3)	BW (kg)	PM2.5 (μg·m^-3)	NPAH (ng·m^-3)
FVC (L)	0.837	0.624	0.631	0.754	0.369	0.079
FEV1 (L)	0.861	0.396	0.404	0.756	0.297	0.072
PEF (L·s^-1)	0.715	0.258	0.242	-0.389	0.024	0.008

Correlation is significant at the 0.05 level (2-tailed). Correlation is significant at the 0.01 level (2-tailed).