Table 1.

A summary of demographic and clinical characteristics of subjects studied.

	Patients n = 43	Controls n = 38	p-Value
Age, years	59 (53.3–61)	46.50 (41–50)	0.008
Male gender, number (%)	12 (27.9)	10 (26.31%)	ns
Body mass index, kg/m2	24 (23.6–26.1)	n.a.	n.a.
Smoking in the past, number (%)	16 (37.2)	n.a.	n.a.
Smoking, packs/years	0 (0–0.5)	n.a.	n.a.

Categorical variables are presented as numbers (percentages), continuous variables as median and 95% confidence interval of standard deviation. Abbreviation: n.a.—not analyzed.