. 2018 Oct 4;13:3107–3114. doi: 10.2147/COPD.S170555

Table 3.

Statistical description of pulmonary function indices of the two groups

Index	Visit	Group	N	Mean	SD	P-value
FEV₁	Baseline	YuPingFeng	120	1.17	0.35	–
	Baseline	Placebo	120	1.13	0.38	–
	52 weeks	YuPingFeng	97	1.21	0.49	0.417
	52 weeks	Placebo	87	1.15	0.40	0.779
FVC	Baseline	YuPingFeng	120	2.36	0.67	–
	Baseline	Placebo	120	2.36	0.74	–
	52 weeks	YuPingFeng	97	2.36	0.71	0.677
	52 weeks	Placebo	87	2.34	0.65	0.412
FEV₁/FVC%	Baseline	YuPingFeng	120	50.85	11.23	–
	Baseline	Placebo	120	49.25	11.05	–
	52 weeks	YuPingFeng	97	51.68	13.61	0.507
	52 weeks	Placebo	87	49.59	11.94	0.920

Abbreviations: FEV₁, forced expiratory volume in 1 second; FVC, forced vital capacity.