Table 1.

Demographic and clinical parameters of lung function in the supplementation and placebo groups

Parameters	Supplementation group	Placebo group	P-valuea
	Values (n=45)	Values (n=45)
Age (years)	63.60±10.94	61.64±10.60	0.39
Smoking (packs/year)	42.80±23.84	44.89±25.43	0.68
FEV1% predicted	47.83±18.01	42.89±14.82	0.06

Notes: The data are presented as mean ± SD.

^aIndependent-sample t-test significant difference between groups.