Table 1.

Predictive equation for FEV1 and FVC.

Indicators	Gender	Formula
FEV1	Male	0.043∗(height∗100)-0.029∗age-2.49
	Female	0.0395∗(height∗100)-0.025∗age-2.6
FVC	Male	0.0576∗(height∗100)-0.026∗age-4.34
	Female	0.0443∗(height∗100)-0.026∗age-2.89

FEV1, forced expiratory volume in 1 second; FVC, forced volume capacity. Notes: height was expressed as meter.