Table 1.

Demographic characteristics of the study population.

	Study population	Males	Females
	n = 521	137 (26.3%)	384 (73.7%)
median age	43	45	41
IQR; range	(31–52); (22–81)	(34–55); (24–66)	(30–51); (22–81)
age groups
20–44 years	282 (54.2%)	63 (46.0%)	219 (57.0%)
45–55 years	157 (3.1%)	43 (31.4%)	114 (29.7%)
56–85 years	82 (15.7%)	31 (22.6%)	51 (13.3%)

IQR: interquartile range.